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Old 03-12-2011   #11
ammrpm
 
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Join Date: Aug 2006
Location: Houston, TX
Posts: 67
Default Re: Plenum Pull: problems and questions

Well, after lots of struggling with the 2 broken bolts I was able to get them out. One of them I just had to drill out. Once enough material was removed with the drill I was able to pull it out. The other one I was able to work long enough with some PB blaster and vice grips that it started to move. Then I was able to unscrew it.

Now I can get back to checking all the rest of the vacuum lines and cleaning some stuff up.

I have ordered a bunch of stuff from Jerry's gaskets. I ordered some MSD coils from Jegs. I just need to order some injectors from FIC now. Can't wait to get this thing back together.
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Old 03-12-2011   #12
mike100
 
Join Date: Feb 2011
Location: San Marcos CA
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Default Re: Plenum Pull: problems and questions

I just got done with mine and I used the Lucas injectors fromficonnection. It runs so much smoother and starts up right away now. You could tell it ran a touch rough on mine though- sometimes the dual mass flywheel even clattered.

4 of my injectors were bad (low ohms) and even missed when they got hot, but I would not necessarily toss your late model ones until you check them out.
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Old 03-12-2011   #13
jrd1990zr1
 
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Join Date: Dec 2005
Location: Delanson, NY
Posts: 915
Default Re: Plenum Pull: problems and questions

Quote:
Originally Posted by ammrpm View Post
Thanks for the responses!

I just bought this car about 2 months ago. I knew it had a vacuum leak under the plenum when I bought it so I knew I was going to pull the plenum after I got it.

It seems the lack of driving this car has caused its fair share of problems. So I am going to go ahead and replace the injectors, coils and plug wires while I have the plenum off. I will probably go ahead and have the plenum and I/H ported as well.

I am definitely going to give Jerry's gaskets some business. I will need lots of gaskets and seals for the plenum, I/H, coolant pipe, injectors. Looks like I will need some coolant pipe bolts as well.

As for the tightness of the bolts on the I/H... not all of them seemed that tight. This might have been part of the problem.

Now that the plenum is off I have been trying to run down the cause of the vacuum leak. I have hooked up my vacuum tool to the secondary vacuum reservoir. The reservoir won't hold a vacuum. It is not a quick drop on the gauge, but it does drop. I also checked the secondary control solenoid switch and it does the same thing, slow drop of vacuum. I checked the secondary actuators and those are both rock steady. They start to crack open at about 1 inhg and are fully open by 7 or 8. Does that sound right?

Where is a good source to find a secondary vacuum reservoir? Where can I find a secondary control solenoid?

Thanks!
Aaron
For the secondary reservoir if Jerry doesn't have one there is one on E-bay item # 250785691792.

Secondary control solenoids come up from time to time too. If Jerry doesn't have one and you can't wait try Kurt White.

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1986 coupe Medium Blue NCRS Top Flight (sold),
1990 ZR1 #2529 Red NCRS Regional and National Top Flight (sold),
1990 ZR1 #2124 Charcoal Metallic NCRS Top Flight 2010 & 2018,
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Old 03-12-2011   #14
ammrpm
 
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Default Re: Plenum Pull: problems and questions

Thanks for the 'heads up' on the parts!
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