C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

bad injectors?

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Old May 18, 2005 | 09:26 AM
  #1  
jiangtao75's Avatar
jiangtao75
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From: glencoe AL
Default bad injectors?

I have always had long/hard starts during warmer weather and it is getting worse. The problems are: hard starts, when it does start up it idles at about 4-500 RPMs and gradually goes up to normal, noticable smoke from tailpipes [no, its not oil smoke}, and when I am driving at normal speed and then get on the throttle a good bit I can smell gas. Is it my injectors or could it be something else? It's an '86 with 91k.
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Old May 18, 2005 | 01:44 PM
  #2  
Clay Assassin's Avatar
Clay Assassin
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From: Elgin Il
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I have had an injector/injectors go out twice on my '89.
Both times, it started running rough.
Followed by barley running, clearly a cylinder missing, followed by not running at all.

I didn't get any codes, the car just quit with a week of the first sign.
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Old May 18, 2005 | 10:52 PM
  #3  
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bmalec
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From: Buffalo Grove IL
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Check the injector coil resistance when the injectors are warm (after the car's been running a bit), and do a fuel pressure leakdown test.

That wil help pinpoint if the injectors are bad.

Good luck!

Ben
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Old May 19, 2005 | 05:57 PM
  #4  
pipe's Avatar
pipe
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From: Reading PA.
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My 90 ran worse the warmer it got. I replaced the Injectors with a matched set from TPIS and never had a problem since. GOOD LUCK WITH THE REPAIR
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Old May 19, 2005 | 06:53 PM
  #5  
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bogus
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From: San Pedro CA
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don't forget the fuel pressure regulator.
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