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05-24-2009
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#1 |
 Join Date: Oct 2008
Location: Colleyville, TX
Posts: 272
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Injector Help
Just installed new injecto0rs and coild today. Everything went like butter - no leaks, no issues going together. The car now has a miss from startup. Idles rough, it says I have full power, but I don't, can hear the flywheel hitting - not hard, but sounds like a click more than a bang. All vacuum hoses are in place. Took it out to see if it would work through it - no chance. Didn't get any better. Didn't seem to get any worse, either. No codes are set, BTW.
 Okay fuel injector replacement gurus, grasshopper needs to sit at your knee. Jim |
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05-24-2009
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#2 |
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Join Date: Sep 2004
Location: Oklahoma
Posts: 111
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Re: Injector Help
What kind of coils did you install?
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05-24-2009
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#3 |
Join Date: Sep 2006
Location: lone pine and mammoth lakes
Posts: 1,407
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Re: Injector Help
also did you do a pressure test after the install just to ck everything?????
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05-24-2009
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#4 |
 
Join Date: Jul 2005
Location: Mendota Heights, MN. 55120
Posts: 984
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Re: Injector Help
I would say that one or more of the injectors aren't seated correctly.
__________________
Bob Anderson 1990 #2405 White/Gray Haibeck chip,4:09 gears,Power Effects Exhaust,5 spoke chrome,C5 brakes,49th Street rockers,K&N,Hurst,Headers,Upper & lower ported Minnesota State Director Founding Member #19 |
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05-24-2009
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#5 |
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Join Date: Oct 2008
Location: Colleyville, TX
Posts: 272
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Re: Injector Help
The coild are GM "545"s From JeffVette. The car ran great when it was cold, but had a hard miss after heat soaking. I thought it would be a coil breaking down with temoerature or an injector failing, so I replaced them both. Did not do a pressure test. I've had no issues with that previously and ran the car two days ago - cold, ran great; after heat soaking, like poop. New fuel pumps and filter, anyways.
Can you explain exactly what you mean by an injector not being seated correctly. I checked them over both in the fuel rail and after the install. They looked sqaure in the holes. Jim |
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05-24-2009
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#6 |
 Join Date: Aug 2006
Location: McLean, VA
Posts: 3,727
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Re: Injector Help
What kind of injectors?
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05-24-2009
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#7 | |
Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,173
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Re: Injector Help
Quote:
__________________
1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978 |
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05-24-2009
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#8 |
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Join Date: Oct 2008
Location: Colleyville, TX
Posts: 272
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Re: Injector Help
The injectors are FICs from Jon
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05-24-2009
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#9 |
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Join Date: Aug 2006
Location: McLean, VA
Posts: 3,727
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Re: Injector Help
Based on my personal experience and past posts, it seems both bad coil and injectors going bad, at times seem ok until they become heat soaked.
Do you have access to a scanner? I am not one of the gurus here but when scanned there is a value, integrator and block learn (I think should be between 128-131?) for both banks. If less, typical suspect is one or more injector failure. http://www.zr1netregistry.com/forum/...light=injector |
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05-24-2009
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#10 |
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Join Date: Aug 2006
Location: McLean, VA
Posts: 3,727
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Re: Injector Help
Hey, Jeffvette
How did you isolate which injector specifically was the leaker? |
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