Corvette C4 Forum 1984 through 1996

silly starting question

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  #1  
Old 08-07-2007, 06:49 PM
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Default silly starting question

Looking for some clues here. If my car is cold (sit overnight) it starts the first second I turn the key. If I've driving around and the car is warm, I go to restart it and has to crank for ever. Any good reason for this????
 
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Old 08-07-2007, 08:38 PM
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Default RE: silly starting question

How's the exhaust look when you do get a hotre-start? Lotta' black?
 
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Old 08-08-2007, 06:37 AM
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Default RE: silly starting question

You are going to have to do a little digging. Does it have fuel pressure? Does it have spark? Does it have injector pulse? Have to answer those basic questions first to know what avenue to go down.
 
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Old 08-08-2007, 07:21 AM
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Default RE: silly starting question

Sounds like yours is doing the same thing mine is. I know I have some injectors leaking.Watch your exhaust after a warm start, is there a puff of black smoke and does the exhaust smell rich??

As long as I don't letmine set over 15 min or so it will start fine, but if I let it set much longer than that, say 30 min or so,it acts like it's flooded. During a cold start I can smell the exhaust is rich and see a puff of black smoke but it cranks right up on the first spin, but a cold engine likes a richer mixture, a hot engine doesn't like it at all.
 
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Old 08-08-2007, 04:18 PM
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Default RE: silly starting question

Thanks for the advice guys. I do get a bit of smoke at the start. I thought that was valve seals leaking a bit though. I try some of the items mentioned and see what I find. Again, this is only when the car is WARM, when it's cold the car starts like a new car.
 
  #6  
Old 08-08-2007, 10:00 PM
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Default RE: silly starting question

very likely you have leaky injectors OHM them out, but you will prolly have to replace them remember black smoke fuel, blue smoke oil , white smoke moisture(usually coolant)
 
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Old 08-09-2007, 04:06 PM
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Default RE: silly starting question

Blue smoke was what I was getting. I actually put some of the "oil treament" to help with leaking seals and it worked. So now I at least know that my problem was with oil. Anyhow, back to the drawing board.
 
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