Injector replacement...would you do it? - ZR-1 Net Registry Forums

Alberta_ZR1 · 03-29-2011

What's your opinion?

I have the fuel rail out of my 93 (40,000km) and debating on whether or not to change the injectors while I'm here. I've got a set of re-manufactured injectors from Fuel Injector Connection sitting on the work bench beside my new fuel regulator.

All of the factory injectors have a reading between 12.8 - 13.0 ohms.

I'm thinking replace the fuel regulator, replace the o-rings on the stock injectors, and put the FIC injectors into the spare ZR-1 parts inventory.

The car ran fine last summer with no problems, so I'm hesitant on replacing the good running factory injectors....thoughts??

tccrab · 03-29-2011

I'm a big fan of "If it ain't broke, don't fix it".
That being said, it might delay your project a day or two, but if you do put back in your originals, consider sending them to FIC and get 'em flowed and cleaned before you put them back in.

Just my $0.02

TomC
Crabs

Kevin · 03-29-2011

no need to replace em

sammy · 03-29-2011

i agree, its the 90-92s that have the problem with todays gas

bobbyhi · 03-29-2011

Quote:

Originally Posted by tccrab

I'm a big fan of "If it ain't broke, don't fix it".
That being said, it might delay your project a day or two, but if you do put back in your originals, consider sending them to FIC and get 'em flowed and cleaned before you put them back in.

Just my $0.02

TomC
Crabs

I have to agree with Tom on getting them cleaned and flow checked. Did that on mine and very happy with the results.

Jagdpanzer · 03-29-2011

Given they've been in the engine for almost 18 years now at least have them cleaned up and flow tested for peace of mind sake. The coils may still be good but the gum and deposit buildup on the tips, which normally occures after this much time and mileage, at some point will begins to have an negative effect such as harder starting, rougher idling and reduced gas mileage. Besides, you've already got the plenum off and a set of replacements standing by on the bench ready to install. Put them in and let us know how much of a difference they made.

XfireZ51 · 03-29-2011

Quote:

Originally Posted by Jagdpanzer

Given they've been in the engine for almost 18 years now at least have them cleaned up and flow tested for peace of mind sake. The coils may still be good but the gum and deposit buildup on the tips, which normally occures after this much time and mileage, at some point will begins to have an negative effect such as harder starting, rougher idling and reduced gas mileage. Besides, you've already got the plenum off and a set of replacements standing by on the bench ready to install. Put them in and let us know how much of a difference they made.

I'm w you Phil.

VetteMed · 03-29-2011

Another vote for change 'em. I'm probably the only person who also will recommend changing the regulator if you've got one on hand, since I had my regulator fail a week after a plenum pull. Luckily it was in my driveway, but elsewhere, it could have stranded me.

Brillo1990 · 03-29-2011

I'm just anal I guess but I would put in the new ones and save the old ones for spares,(probably never need them) doesn't make sense (to me) to have it apart with new parts laying there and not put them in. If the old ones are good after testing then sell them to someone looking for originals. JMO of course.

mike100 · 03-29-2011

put the originals in a box and use the newer ones. They probably will idle and run just a bit smoother.

IF your car is 100 percent original still, then send them out for service and put them back in, otherwise, if you have some aftermarket bits and pieces, it won't really matter if the injectors are different too.

03-29-2011	#1
Alberta_ZR1 Join Date: Jul 2010 Location: Calgary Alberta Posts: 191	Injector replacement...would you do it? What's your opinion? I have the fuel rail out of my 93 (40,000km) and debating on whether or not to change the injectors while I'm here. I've got a set of re-manufactured injectors from Fuel Injector Connection sitting on the work bench beside my new fuel regulator. All of the factory injectors have a reading between 12.8 - 13.0 ohms. I'm thinking replace the fuel regulator, replace the o-rings on the stock injectors, and put the FIC injectors into the spare ZR-1 parts inventory. The car ran fine last summer with no problems, so I'm hesitant on replacing the good running factory injectors....thoughts?? __________________ [SIZE=1][SIZE=2]Tyler[/SIZE] [SIZE=1]1993 ZR-1 - Polo Green[/SIZE] [/SIZE] Last edited by Alberta_ZR1; 03-29-2011 at 12:30 AM.

03-29-2011	#2
tccrab Join Date: Oct 2004 Location: Folsom CA Posts: 1,655	Re: Injector replacement...would you do it? I'm a big fan of "If it ain't broke, don't fix it". That being said, it might delay your project a day or two, but if you do put back in your originals, consider sending them to FIC and get 'em flowed and cleaned before you put them back in. Just my $0.02 TomC Crabs __________________ TomC '90ZR1 #792 Honorary Pirate [B]If it ain't FUN, you're doing something terribly WRONG. [/B]

03-29-2011	#3
Kevin Join Date: Jun 2005 Location: pittsburgh Posts: 4,632	Re: Injector replacement...would you do it? no need to replace em __________________ It's not the car, it's the people - Doug Johnson 90 r/r "KEYS ON" nick named "T.L.B"

03-29-2011	#4
sammy Join Date: Jun 2010 Location: back in lone pine Posts: 591	Re: Injector replacement...would you do it? i agree, its the 90-92s that have the problem with todays gas

03-29-2011	#6
Jagdpanzer Join Date: Apr 2007 Location: Northern VA Posts: 2,661	Re: Injector replacement...would you do it? Given they've been in the engine for almost 18 years now at least have them cleaned up and flow tested for peace of mind sake. The coils may still be good but the gum and deposit buildup on the tips, which normally occures after this much time and mileage, at some point will begins to have an negative effect such as harder starting, rougher idling and reduced gas mileage. Besides, you've already got the plenum off and a set of replacements standing by on the bench ready to install. Put them in and let us know how much of a difference they made. __________________ Phil Wasinger 1994 Torch Red ZR-1 WAZOO Member George Braml Intake

03-29-2011	#8
VetteMed Join Date: Mar 2009 Location: Orlando, FL Posts: 1,828	Re: Injector replacement...would you do it? Another vote for change 'em. I'm probably the only person who also will recommend changing the regulator if you've got one on hand, since I had my regulator fail a week after a plenum pull. Luckily it was in my driveway, but elsewhere, it could have stranded me.

03-29-2011	#9
Brillo1990 Join Date: Jan 2011 Location: Eastern Iowa Posts: 113	Re: Injector replacement...would you do it? I'm just anal I guess but I would put in the new ones and save the old ones for spares,(probably never need them) doesn't make sense (to me) to have it apart with new parts laying there and not put them in. If the old ones are good after testing then sell them to someone looking for originals. JMO of course.

03-29-2011	#10
mike100 Join Date: Feb 2011 Location: San Marcos CA Posts: 1,802	Re: Injector replacement...would you do it? put the originals in a box and use the newer ones. They probably will idle and run just a bit smoother. IF your car is 100 percent original still, then send them out for service and put them back in, otherwise, if you have some aftermarket bits and pieces, it won't really matter if the injectors are different too.

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