Beware charcoal canister breakdown!

[VetteMed]

As mentioned in my hi-miler thread, it would be a smart idea to check your charcoal canisters periodically. Mine started to deteriorate, and sent charcoal pellets all through the vacuum lines, solenoid, and presumably into the intake and cylinders as well.

I recently noticed that the engine would fire at the first crank, very unlike what an LT5 should be doing. I now figure this was due to constant fuel vapor venting from the tank into the intake, since the purge solenoid was lodged open due to charcoal pellets present.

New canister is around $60, new purge solenoid around $30. Guess it's still cheaper than owning a boat.

[GOLDCYLON]

Andrew thanks for this post. Do you have any details on the parts number etc any install instrustions? Removal techniques?

[VetteMed]

Sure thing.

The charcoal canister is located upside-down, behind the RH rear wheel, above the black plastic access cover. Note that this cover is not present in the equivalent location on the LH rear wheelwell area, so it should be obvious where the correct location is on the RH side. After removing the access cover, there's a friction type strap around the canister which can be loosened with a flat-bladed screwdriver, there's 2 spring hose clamps to remove, and there's 2 plastic clips over the "top" of the canister which is actually the part closest to the ground in this case. incidentally, it's this upside-down mounting that makes failure of the canister particularly likely to cause the dissemination of charcoal particles.

GM PN for the canister is: 17090139
I purchased an aftermarket (Standard Motor Products) CP1031 for a few bucks less.

UPDATE: The Standard Motor Products canister is the OEM Rochester unit, with a GM part number on it.

Replacement of the purge valve is only needed if you find charcoal particles in the lines. it's located under the plenum, just aft of the 2 large breather hoses. It's secured by 2 - 8mm bolts.

The purge valve PN is 01997201 for ACDelco. Note that the new valve does NOT come with the bracket, you must save and reuse your original.

[GOLDCYLON]

Sure thing.

The charcoal canister is located upside-down, behind the RH rear wheel, above the black plastic access cover. Note that this cover is not present in the equivalent location on the LH rear wheelwell area, so it should be obvious where the correct location is on the RH side. After removing the access cover, there's a friction type strap around the canister which can be loosened with a flat-bladed screwdriver, there's 2 spring hose clamps to remove, and there's 2 plastic clips over the "top" of the canister which is actually the part closest to the ground in this case. incidentally, it's this upside-down mounting that makes failure of the canister particularly likely to cause the dissemination of charcoal particles.

GM PN for the canister is: 17090139
I purchased an aftermarket (Standard Motor Products) CP1031 for a few bucks less.

Replacement of the purge valve is only needed if you find charcoal particles in the lines. it's located under the plenum, just aft of the 2 large breather hoses. It's secured by 2 - 8mm bolts.

The purge valve PN is 01997201 for ACDelco. Note that the new valve does NOT come with the bracket, you must save and reuse your original.


Awesome thanks Andrew.. I will replace for GP. Where did you order your aftermarket canister from?

[VetteMed]

Rockauto, under 50 bucks before shipping.

-Andrew

[GOLDCYLON]

Ordered thanks

[VetteVet]

Same thing happened to mine. Advance Auto had a replacement for 52.99.

[Z51JEFF]

Ive got something I need to take a look at,whenever I put the car in the garage I can smell gas at this corner of the car.If gas fumes flow through the canister shouldn't there be no smell?

[Daniel_Mc]

I was going to check the one in the 91 and found the line that was caped off and in the rocker panel went to this canister? What would the reason be for bypassing this?

[-=Jeff=-]

Ive got something I need to take a look at,whenever I put the car in the garage I can smell gas at this corner of the car.If gas fumes flow through the canister shouldn't there be no smell?

If it is working correctly.. then yes, no gas fume smeel

[GOLDCYLON]

If it is working correctly.. then yes, no gas fume smeel

Mines stinky as well. im betting 20 years is about max life on these canisters. Fuel vapors are one of the first indicators Ive been told. 2nd indicator would be the charcoal in the line like Andrew had seen.

[HAWAIIZR-1]

Wow, something else I have to think about. Good info and Dynomite solutions for this post.

I am waiting on all my emssions parts to put back so I can pass the Japan testing. Does this have any effect related with emissions too?

[mike100]

Wow, something else I have to think about. Good info and Dynomite solutions for this post.

I am waiting on all my emissions parts to put back so I can pass the Japan testing. Does this have any effect related with emissions too?

Back in the day, evaporative emissions accounted or 20% of all pollution (unburned gasoline evap'ed into the atmosphere). Basically there is a 1-way check valve between the tank vent and the charcoal can, the sealed gas cap, and a purge solenoid which vents the tank expansion fumes into the running engine. The charcoal canister is in there like a catch can to moderate the fumes from condensing in the wrong place I think. The purge is off and sealed tight when the engine is off.

you can pass the sniffer without it, buit it has to be there for visual in my state- plus they test the tank integrity by clamping off the purge vent and pressurizing the tank...then they test the cap separately.

[ittlfly]

As I recall, the one way check valve opens @ .7 lbs pressure allowing the fumes from the tank to pass to the canister. The ECM commands the purge valve to open between the intake and canister when certain peramiters are met thereby purging the canister..

[HAWAIIZR-1]

Thanks for the explanation and good to know. I will try to check more into how detailed the inspection is. Surely don't want to fail as the testing is $2300 US; not sure what it cost to retest yet.

Craig

[VetteMed]

It took me over an hour today to get the lines unblocked from all of the charcoal pellets - I strongly recommend canister replacement as preventative maintenance, to avoid the fun I had today (and the expense of a new purge solenoid!)

[HAWAIIZR-1]

It took me over an hour today to get the lines unblocked from all of the charcoal pellets - I strongly recommend canister replacement as preventative maintenance, to avoid the fun I had today (and the expense of a new purge solenoid!)

So you think this more a time versus mileage thing as our cars are over 20 years old? I notice your car has 189K....WOW. I'll think I'll do this when I have the car up on the lift to replace the headers. Thanks again for sharing.

[VetteMed]

Hard to say, really... it's a non-wear item (no moving parts), so that leads me to believe it's more age related than mileage related, if I had to guess.

[VetteMed]

UPDATE: The Standard Motor Products canister is the OEM Rochester unit, with a GM part number on it. No reason to waste money on the Delco can.

[GOLDCYLON]

UPDATE: The Standard Motor Products canister is the OEM Rochester unit, with a GM part number on it. No reason to waste money on the Delco can.


My Standard Part Number PF 1031 canister came in from Rock Auto today it is also stamped Rochester on the top. Just FYI. Thanks for the tip again Andrew. :handshak:

[VetteMed]

My Standard Part Number PF 1031 canister came in from Rock Auto today it is also stamped Rochester on the top. Just FYI. Thanks for the tip again Andrew. :handshak:

Glad to help, Daryll! :cheers:

[HAWAIIZR-1]

Okay, guys. Here we go again with the unique 90 MY stuff. I see that there is a different part number for the cannister (almost double the price), but the valve is the same as other years:

1990 CHEVROLET CORVETTE ZR-1 5.7L 350cid V8 MFI (J) DOHC : Emission : Vapor Canister WikiPriceSTANDARD MOTOR PRODUCTS Part # CP1032 {#17113150, 215155}
http://www.rockauto.com/catalog/images/us.gif http://www.rockauto.com/catalog/images/ca.gifhttp://info.rockauto.com/getimage/getimage.php?imagekey=45294&imageurl=http%3A//info.rockauto.com/SMP/CP1032_FULL.jpg
$94.79Add to Cart ACDELCO Part # 215155 {#17113150}
http://www.rockauto.com/catalog/images/us.gif http://www.rockauto.com/catalog/images/ca.gif CANISTER,EVAP EMIShttp://info.rockauto.com/getimage/getimage.php?imagekey=88242&imageurl=http%3A//images.wrenchead.com/smartpages/partinfo_resize/DUS/215-155.jpg
* Non-stock (http://www.rockauto.com/lang/en/answers.html#DELAY) item--shipping delayed up to 5 business days$81.99

[VetteMed]

Looks like it has the purge valve built into the top of the canister, unlike the 91 which has the purge valve in the tank, and the canister has no moving parts. Bummer.

[VetteMed]

Also, note there's a solenoid and a valve - solenoid under the plenum sometimes incorrectly gets called a valve.

[HAWAIIZR-1]

Okay, thanks. I'll try to take a look at it first and confirm the part number on the original before ordering anything. It seems we have a few unique items on the 90 MY...........what a pain in the arse.

[-=Jeff=-]

yes 90 is different, those pictures you posted are correct.

1990 Canister is up front under the left headlight

[xlr8nflorida]

My Standard Part Number PF 1031 canister came in from Rock Auto today it is also stamped Rochester on the top. Just FYI. Thanks for the tip again Andrew. :handshak:


How much is it for 90?

[HAWAIIZR-1]

yes 90 is different, those pictures you posted are correct.

1990 Canister is up front under the left headlight

Thanks Jeff, I was wondering about that and a lot easier to get to so that is a plus.

[GOLDCYLON]

Yep the 91 Replacement I received over the weekend looks nothing like that. Great catch Craig and yet another in the only My 90 club. Just like the Air pump etc.

[ZRapid-1]

VetteMed,

Thanks for this post. Your timing is remarkable.
I have a 90 which has just started exhibiting similar symptoms.
When I used to turn the key, the engine would crank for a few seconds and then start running.
Now when I turn the key, the engine starts running instantly. There is no delay in firing up.
I noticed the difference but did not know why.

In reading some of the replys, you did not explicitly state that the replacement of the canister and purge valve cured the problem. Did it? Is your car back to cranking for a few seconds before starting?

I also see that the 91 MY charcoal canisters are mounted upside down. This leads to broken down charcoal in the lines and then subsequent disruption of purge valve operation.

Has anyone else seen this as a problem in the 90 MY?
Does anyone else have a 90 which fires as soon as the key is turned and what have they done to troubleshoot and remedy the problem.

Thanks in advance,
ZeeAreOne

[HAWAIIZR-1]

Yep the 91 Replacement I received over the weekend looks nothing like that. Great catch Craig and yet another in the only My 90 club. Just like the Air pump etc.

GC,
I did not see that the air pump is different, but I noticed that for the other emissions items it seems same for 90-91 and 92-95 for all the a.i.r. stuff. It seems the same part number for the air pump itself so that is good news if true. Wow, we really have to check about some of this specific MY stuff and I guess there are ways to make interchange on something and not others.

[GOLDCYLON]

Im referring to the secondary pump. The pump is the same but the connectors are different.

[VetteMed]

good stuff! :)

[HAWAIIZR-1]

Just wanted to share a few things I just found out.

1. Marc H said this does not apply to MY 1990 with the cannister in the front.

2. Standard Motor Products CP1032 does not work for MY 1990 and does not have the port on the bottom of the cannister like the factory unit.

AC Delco 215-155 and GM 17113150 that is supposed to be for MY 1990 is being confirmed and will pull out the factory unit to see what part number is actually on it.

[tomtom72]

Craig, because our 90 M/Yr canister is 'right side up' our charcoal can't get out into the lines? Do I get that much?

Thanks for running this down for the rest of us 90 owners!:thumbsup:

Tom

[HAWAIIZR-1]

Craig, because our 90 M/Yr canister is 'right side up' our charcoal can't get out into the lines? Do I get that much?

Thanks for running this down for the rest of us 90 owners!:thumbsup:

Tom

Tom,

I don't know about the cannister and why no issue with MY 90, just what Marc H said. But it does sound logical. I don't know if I really need a new one or not, but trying anything to help pass emissions and it is over 20 years old regardless.

My main concern is that no one else buys Standard Motor Products CP1032. I found the problem and wrong cross reference given by Rock Auto. The part number on the item is GM 17092089, Standard cross references it correctly as CP1032.

I'm not sure if AC Delco 215-155 or GM 17113150 is correct and I assume so since the parts catalog for our cars states so. The problem is I can't see any good photos where it shows the bottom of the cannister with the port and connector. I just found and ordered GM 17113150 so we'll see when it arrives and I'll report findings. My Hawaii blood is too wimpy to go out in the cold garage right now to pull out the stock unit to check. It might be possible to see the GM part number but it is a little tucked under that corner. More to follow..............:cheers:

[HAWAIIZR-1]

Okay, so the cannister that is in my 1990 MY is GM 17087214. The thing that sucks is it does not seem to have a cross reference to AC Delco and when going to Standard Motor Products cross reference the have going to CP1032 again...............

Now my question is why the parts manual for our cars has a different part number and no where does it reference GM 17087214? Oh well, another 1990 part nightmare.

[tomtom72]

Looks like another case of NLA? I'm thinking that other than the mechanical parts, valve & it's solenoid, what are the operating parts? The darn charcoal is all I can think of?

In a worst case situation if the part is NLA. What about going to an HVAC supply house and getting a bunch of filters that have charcoal impregnated into the media and doing surgery to do a swap out? Or, I just had this BFO, some fish tank filters use granular charcoal, why can't that work?

Okay,:o I admit I'm out where the buses don't run!:sign10:

[Mystic ZR-1]

...and if the buses did run out there, the driver wouldn't stop for you :dancing

[Corbusa]

Does anyone know if a ? standard 88-89 vette canister is different than a Z?or what about a truck.? Its just a can - maybe they will be the same.. Or like tom said - cut it open and replace the coal..

[-=Jeff=-]

here you go:
CHEVROLET BLAZER 1995
CHEVROLET CAMARO (1984 - 1986)
CHEVROLET CORVETTE (1986 - 1990)
CHEVROLET S10 BLAZER (1992 - 1994)
CHEVROLET S10 PICKUP 1992
GMC JIMMY (1992 - 1994)
GMC SONOMA (1992 - 1995)
OLDSMOBILE BRAVADA (1992 - 1994)
PONTIAC FIREBIRD (1984 - 1986)
PONTIAC J2000 (1984 - 1985)
PONTIAC SUNBIRD 1986

All use the same canister. I got mine at Rock Auto they show the ACDelco one for 88.79..

[HAWAIIZR-1]

Looks like another case of NLA? I'm thinking that other than the mechanical parts, valve & it's solenoid, what are the operating parts? The darn charcoal is all I can think of?

In a worst case situation if the part is NLA. What about going to an HVAC supply house and getting a bunch of filters that have charcoal impregnated into the media and doing surgery to do a swap out? Or, I just had this BFO, some fish tank filters use granular charcoal, why can't that work?

Okay,:o I admit I'm out where the buses don't run!:sign10:

Tom,

You might be onto something and I do see used parts available to try hack open one. It seems to be the story of our life with these cars and the NLA. Not sure if it is even an issue to be concerned with or not, but there must have been a purpose for this. I have no clue about all of this. As long as you are not waiting for the short, yellow bus...........:cheers:

[HAWAIIZR-1]

here you go:
CHEVROLET BLAZER 1995
CHEVROLET CAMARO (1984 - 1986)
CHEVROLET CORVETTE (1986 - 1990)
CHEVROLET S10 BLAZER (1992 - 1994)
CHEVROLET S10 PICKUP 1992
GMC JIMMY (1992 - 1994)
GMC SONOMA (1992 - 1995)
OLDSMOBILE BRAVADA (1992 - 1994)
PONTIAC FIREBIRD (1984 - 1986)
PONTIAC J2000 (1984 - 1985)
PONTIAC SUNBIRD 1986

All use the same canister. I got mine at Rock Auto they show the ACDelco one for 88.79..

Thanks Jeff. I'll check it out. Any part number by chance? I checked several applications shown and part numbers are all over the place. For example, the 85 Camaro take a different cannister for 4 cyl vs. V8 and some of the others show CP1032 too that does not have the bottom port. Please share the part number you got with the fitment for the MY 90 with bottom port. Otherwise they seem the same, but don't show a photo of the bottom. I did not check as to where that bottom hose goes too since everything else is the same on top.

[-=Jeff=-]

ACDelco 215155

Standard Motor Products: CP1032

[HAWAIIZR-1]

ACDelco 215155

Standard Motor Products: CP1032

Thanks Jeff. If you don't mind getting the GM number on the part that would be great. CP1032 did not work for 90 MY so far. Not sure what a AC Delco 215-155 looks like and what GM part number it cross-references to. Man, this stuff is a little confusing................

[-=Jeff=-]

17113150

[HAWAIIZR-1]

17113150

Thanks, I just saw this in my earlier post where I showed the photos of the Rock Auto listings. I have one on the way so we'll see when it arrives, but the one in the car is 17087214. So you are saying that 17113150 does have the port and fitting on the bottom.

Craig

[tomtom72]

...and if the buses did run out there, the driver wouldn't stop for you :dancing

Hey now, I resemble that remark!:sign10:


Craig, it's a good thing I used to walk to school, up hill both ways, or I proly would be on the short bus!:sign10:

Look, charcoal is an absorbent material, or a filter if you prefer, or both. The only thing I don't know is what exactly it is supposed to do in an evap canister. Okay so the gas tank gets hot, fuel vaporizes & expands and goes to the canister to be....this is where I run out of brain power...absorbed is my guess as it is against the EPA to vent fuel vapor to the air. Okay so once the saturation point of the charcoal quantity in the canister is reached what happens to the extra? If the media is saturated it will eventually start to release liquid gas back out because it can't hold any more vapor. Maybe that's what our bottom port is for? I doubt it personally. More than likely the purge programing is written to purge the canister before the saturation point. So it gets sucked back into the motor to be burned. The only way you should, in theory, smell gas is if it's not purging. To me that means either the solenoid or the valve failed, and there is nothing wrong with the charcoal. There can't be anything wrong with the charcoal, it's not logical as it doesn't break down unless there is liquid gas present in the canister, and for quite awhile too. Therefore, if my cognitive process is correct ( which is open to debate! ) changing out the 90's valve & solenoid should keep us legal.
JMHO :o

:cheers:
Tom

[Z51JEFF]

I just replaced mine about a month ago,my cost for AC Delco was about $50.The reason I replaced it was I kept smelling gas at the right rear of the car,still smell gas at the right rear.

[HAWAIIZR-1]

changing out the 90's valve & solenoid should keep us legal.
JMHO :o

:cheers:
Tom

Tom,

I don't know about all that charcoal stuff, but good point mentioning the valve and solenoid. I did find a GM 17113150, but we'll see if it fits when it arrives; wasted $10 and returning the CP1032 with other part number. As you said, the actual PN 17087214 is NLA and I'm not sure if I even really need it. Replaced both PCV valves yesterday since they were a little sticky with oil. Trying anything and everything to pass emissions, but it might be impossible here with their standard.

Thanks for your thoughts and input.

Craig

[tomtom72]

Your cognitive processes are functioning but your eyesight is deteriorating after a hard day at school if you think you are walking UPHILL both ways from school :D

I went to Catholic grammar school so everyday was a hard day!:sign10:

[HAWAIIZR-1]

Okay, so another part number that does not fit the 90 model year is
GM 17113150. I received it a few days ago and still different. WTF? Time to investigate what the heck the hose on the bottom of the cannister goes to.

The actual part number 17087214 that is in my car now seems to be NLA and the curse of the 90 MY Club.

[tomtom72]

I'm wondering if the 90 ZR-1 is the unique application or are all the pre-91 corvettes, L98 included, are the unique applications? I should try to run some parts searches using an L98 as a tag?

Oh, Cliff pointed out a flaw in my thinking, the bottom hose has to let air in when the solenoid commands the valve open or the engine vacuum can not suck the gas fumes back into the motor to be burned! DUH! Ya have to have two openings to get gas movement, just like an HVAC duct system you need a supply register and a return register or you have no atmosphere circulation.

:o
Tom

[HAWAIIZR-1]

I'm wondering if the 90 ZR-1 is the unique application or are all the pre-91 corvettes, L98 included, are the unique applications? I should try to run some parts searches using an L98 as a tag?

Oh, Cliff pointed out a flaw in my thinking, the bottom hose has to let air in when the solenoid commands the valve open or the engine vacuum can not suck the gas fumes back into the motor to be burned! DUH! Ya have to have two openings to get gas movement, just like an HVAC duct system you need a supply register and a return register or you have no atmosphere circulation.

:o
Tom

Tom,

You might be right in that others fit. It is just frustrating the part number (17087214) on the car comes up with nill. Man, you are a critical thinker and smarter than you give yourself credit for. Thanks for your thoughts.

Craig

[-=Jeff=-]

so what does not fit about it? do you have a picture of the original and the replacement?

[tomtom72]

Thanks Craig! I was just thinking that the newer Z's have the canister at the rear and our 90's have it at the front; and the newer Z's canisters are mounted upside down and ours are right side up....so where was the 90 L98 canister mounted and was it upside down or what? That was my BFO for the day!:mrgreen:

I still maintain that as long as we can get the purge valve that the rest of the old stuff can stay. You can even get the filter as a replacement part according to rock auto.

[HAWAIIZR-1]

so what does not fit about it? do you have a picture of the original and the replacement?

The only difference is the bottom of the cannister on the original has a L angled connector with a hose on it. The two different part numbers that I bought has a flat bottom with no connector for the hose on the bottom. I don't have any photos as I did not completely remove the old one and started too, until I found I did not have the correct part. I have yet to check what the hose leads to. Maybe all 90 MY does not have the same part I have? Mine is SN# 1727 in production if that helps.

[HAWAIIZR-1]

Thanks Craig! I was just thinking that the newer Z's have the canister at the rear and our 90's have it at the front; and the newer Z's canisters are mounted upside down and ours are right side up....so where was the 90 L98 canister mounted and was it upside down or what? That was my BFO for the day!:mrgreen:

I still maintain that as long as we can get the purge valve that the rest of the old stuff can stay. You can even get the filter as a replacement part according to rock auto.

Tom,

This is mind boggling to me. I did try the other Corvette engines and earlier models up to 87 finding the same results of part numbers already tried: http://www.rockauto.com/catalog/x,carcode,1041242,parttype,5180

Then again, this is using Rock Auto since they also have photos. Having said that, there was a listing on Ebay a few days ago for a used one someone was selling that appeared to be exact and have the L nipple connector on the bottom of the cannister. It is easy for any of us with a 90 to take a minute to open up their hood and feel the bottom of their cannister to see if there is a hose connected to it. I do have one on order with parts.com, but I don't know if they are BS or not as I found some good and bad about that company. The current status says: on order (it was placed 2 weeks ago). The part ordered is the exact part number that is in the car. Like you said, it may not even be needed and just the valve, etc. as it won't matter if the charcoal cannister is new if the valve does not work and have not looking into troubleshooting methods in FSM yet to test.

[-=Jeff=-]

Bottom hose connection is a vent. I know when I replaced it on my 89 L98 it had the vent on top and worked fine. I am almost positive my 90Z I replaced the canister with no issues. That was in 2007

[HAWAIIZR-1]

Bottom hose connection is a vent. I know when I replaced it on my 89 L98 it had the vent on top and worked fine. I am almost positive my 90Z I replaced the canister with no issues. That was in 2007

Jeff,
Thanks. I'll check it out and try to match up to see if the hose can connect to a vent on the top instead. I thought I had 3 connections and the top on both so did not know where that other hose would go.

[AustinJohn]

I realize this is an old, old thread but having been chasing a "rough idle" in my '94 coupe (not the ZR-1) just ran across this and it was the silver bullet or at least one of three; the canister was bad, the line was clogged with charcoal pellets (blew those out with compressed air) and I replaced the purge solenoid while I was at it not knowing what was in it. All runs as it should now.

Many, many thanks! John PS The car gave me a BIG clue at the start of my hunt as opening the gas cap after a drive of any length (especially when it was a hot day) would release a tremendous "WHOOSH" sound but checking the Corvette Forum I found threads suggesting that was normal. In fact, it's not, just a symptom of a defective canister.

[gbrtng]

The canister on my 91 leaked enough fumes to cause the vehicle to flunk the Illinois emissions test in 2002 - the test used a pickup hose at each exhaust pipe and the RH hose detected the unburned HC content. Many dollars were spent trying to pass the test until the defective canister was discovered. What I'd like to know is which hose(s) do you inspect for carbon granules - I read the whole thread and nobody really answered that question ...

[AustinJohn]

I have not looked at the FSM for my ZR-1 but on my '94 the hose that can become plugged with carbon granules is the one that runs from the canister to the engine (the vacuum pulls the granules from a defective canister). The other hose, from the tank to the canister, is not subject to the problem as the vacuum is pulling the fumes from the tank to the canister. John

[Fully Vetted]

Hey, John. Good to see you hangin' around.

Thanks for digging this old thread up. After seeing it I was reminded that the PO of my car had mentioned something about replacing the canister back by the right rear wheel. I didn't have a clue what he was talking about so I just filed it somewhere in my brain. So, after going through all the parts I got with the car there it was. A brand new canister still in the box. I might as well put it on since I have it and it is 20 years old now.

Many thanks, my friend!

[PhillipsLT5]

I had trouble with mine, no longer, its gone, most of our cars experience the same problems

[Fully Vetted]

You "kludged" it? I didn't realize you could do that. What's the work around? It doesn't throw any codes?

[PhillipsLT5]

That's a ? for Marc, no emissions needed here

[AustinJohn]

Hey, John. Good to see you hangin' around.

Thanks for digging this old thread up. After seeing it I was reminded that the PO of my car had mentioned something about replacing the canister back by the right rear wheel. I didn't have a clue what he was talking about so I just filed it somewhere in my brain. So, after going through all the parts I got with the car there it was. A brand new canister still in the box. I might as well put it on since I have it and it is 20 years old now.

Many thanks, my friend!

Hi David - Hadn't seen your dyno numbers before (430 RWHP/392 RWTQ). Very impressive. John

[We Gone]

Just a Question, I know this is after the fact but would be insurance to keep the charcoal bits out of the line could you add a small filter on the out going line? solid rock one like you use on an aquarium or paper fuel line filter?

[batchman]

Just a Question, I know this is after the fact but would be insurance to keep the charcoal bits out of the line could you add a small filter on the out going line? solid rock one like you use on an aquarium or paper fuel line filter?

Interestingly RockAuto lists a Vapor Canister Filter (Standard Auto #CF1) for use with 4 1/2" Filter, which sort of sounds like it belongs inside the canister... At $1.50 I'll buy it and see if there's a place to put it.

I've noticed a fuel smell at the rear before and I've been fighting an odd up-idle for a long time. Me thinks I'm in this club too, but it sounds like the purge valve is under the plenum?? I was really hoping it'd be easy to get at so as to blow out any crud.

Yikes,
- Jeff