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305 won't stay running

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Old Aug 9, 2008 | 12:36 PM
  #1  
mdpierce8's Avatar
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Car: 1987 Camaro Sports Coupe
Engine: 305 4bbl
Transmission: 700R4
Axle/Gears: 2.73
305 won't stay running

I have a 87 Camaro sports coupe with a 305. The only way I can get it to run is if I let it sit for a while. After 10-15 min it will run but only for like 1 min. then I have to wait another 10-15 minutes. What's the deal
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Old Aug 9, 2008 | 04:55 PM
  #2  
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From: Big Lake, MN
Car: 1986 Iroc-Z
Engine: 305 TPI
Transmission: T-5
Axle/Gears: 3.73 posi
Re: 305 won't stay running

is it tpi or carbed or tbi?
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Old Aug 10, 2008 | 12:25 AM
  #3  
mdpierce8's Avatar
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Car: 1987 Camaro Sports Coupe
Engine: 305 4bbl
Transmission: 700R4
Axle/Gears: 2.73
Re: 305 won't stay running

carburated
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Old Aug 10, 2008 | 12:36 AM
  #4  
ultimatefighter's Avatar
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From: Topeka, KS
Car: 1992 Z28
Engine: 305 TPI
Transmission: 700r4
Axle/Gears: 10 bolt posi. G80
Re: 305 won't stay running

How does it idle? Does it start right up?
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Old Aug 10, 2008 | 12:46 AM
  #5  
mdpierce8's Avatar
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Car: 1987 Camaro Sports Coupe
Engine: 305 4bbl
Transmission: 700R4
Axle/Gears: 2.73
Re: 305 won't stay running

It seems like it idles fine. But usually I have to crank it over for a minute. I mean sometimes it will start up right up but not usually
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Old Aug 10, 2008 | 12:51 AM
  #6  
ultimatefighter's Avatar
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From: Topeka, KS
Car: 1992 Z28
Engine: 305 TPI
Transmission: 700r4
Axle/Gears: 10 bolt posi. G80
Re: 305 won't stay running

Have you checked your timing? Maybe something to do with the fuel...pump? Somebody smarter will chime in I'm sure.
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Old Aug 10, 2008 | 12:56 AM
  #7  
mdpierce8's Avatar
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Posts: 18
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Car: 1987 Camaro Sports Coupe
Engine: 305 4bbl
Transmission: 700R4
Axle/Gears: 2.73
Re: 305 won't stay running

Firing order is good. May be the fuel pump. I'll probably replace it. Do you think it could be a vacuum leak?
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Old Aug 10, 2008 | 01:09 AM
  #8  
ultimatefighter's Avatar
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From: Topeka, KS
Car: 1992 Z28
Engine: 305 TPI
Transmission: 700r4
Axle/Gears: 10 bolt posi. G80
Re: 305 won't stay running

I meant what is your timing set at? Also, I could be wrong, but if you had a vacuum leak, it wouldn't idle that great.
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Old Aug 10, 2008 | 01:14 AM
  #9  
mdpierce8's Avatar
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Car: 1987 Camaro Sports Coupe
Engine: 305 4bbl
Transmission: 700R4
Axle/Gears: 2.73
Re: 305 won't stay running

Well it seems to be idleing fine. And I have no idea about the timing. But if the timing was wrong it wouldn't run at all. Right?
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Old Sep 2, 2008 | 06:52 PM
  #10  
86irocu's Avatar
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From: Big Lake, MN
Car: 1986 Iroc-Z
Engine: 305 TPI
Transmission: T-5
Axle/Gears: 3.73 posi
Re: 305 won't stay running

The fuel pump is hydrolic... I havent had one go bad before. You probably have a vac leak for your carb needs rebuilt... How does the fuel filter look? have you checked the PCV valve??
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Old Sep 9, 2008 | 12:29 PM
  #11  
mdpierce8's Avatar
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Car: 1987 Camaro Sports Coupe
Engine: 305 4bbl
Transmission: 700R4
Axle/Gears: 2.73
Re: 305 won't stay running

Ok. I figured out what the problem was. A clogged fuel line.

but now I have a new problem. It doesn't want to run it gear. It will idle in gear fine but as soon as I give it gas it dies. I think the carburetor is bad. What do you think

Fuel pump is new by the way
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Old Sep 9, 2008 | 10:21 PM
  #12  
86irocu's Avatar
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From: Big Lake, MN
Car: 1986 Iroc-Z
Engine: 305 TPI
Transmission: T-5
Axle/Gears: 3.73 posi
Re: 305 won't stay running

it might need a rebuild... I have a few CCQJET's laying around. One good one and one that needs a rebuild.
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Old Sep 12, 2008 | 01:46 PM
  #13  
mdpierce8's Avatar
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Joined: Aug 2008
Posts: 18
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Car: 1987 Camaro Sports Coupe
Engine: 305 4bbl
Transmission: 700R4
Axle/Gears: 2.73
Re: 305 won't stay running

But I did rebuild it. It ran fine for a while, then I had this problem. I guess it's one of those one problem after another situations.
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Old Sep 12, 2008 | 02:04 PM
  #14  
five7kid's Avatar
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Posts: 43,187
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
The 1987 models had an in-tank electric pump as well as the mechanical (not "hydraulic") pump mounted on the engine. It's pretty common for the in-tank to fail, and the mechanical not being able to suck through the failed electric pump enough to keep the engine supplied.

That doesn't fit all of your symptoms, but it does some. How confident are you in the carb rebuild job you did?
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