Engine Blurb - Team Camaro Tech
Troubleshooting Diagnosing problems done here.

 
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post #1 of 8 (permalink) Old Mar 26th, 00, 02:46 PM Thread Starter
 
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While trying to accelerate my engine now cuts out like its either getting too much gas or not enough... I dont know a whole lot about engines... But I increased the air jet and the gas intake and it didnt help any..
while driving I tried popping the throttle open full and when I stomped on the gas a second time the engine backfired!!!
HELP!!!!! its an 83 camaro with a v8 4 barrel carb..
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post #2 of 8 (permalink) Old Mar 26th, 00, 07:15 PM
 
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It sounds like your carb is running lean. May be due to internal vacuum leak, or the jets are way off.
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post #3 of 8 (permalink) Old Mar 27th, 00, 01:09 PM
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Holley carb? 2 words....Accelerator pump.

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post #4 of 8 (permalink) Old Mar 27th, 00, 04:20 PM Thread Starter
 
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I just replaced the fuel pump so it cant be that already???
but the jets may be off a bit
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post #5 of 8 (permalink) Old Mar 27th, 00, 04:24 PM
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Not the fuel pump....the ACCELERATOR pump. It is part of the carb. power circuit. It injects a stream of fuel into the venturies when the throttle plates are opened.

The diaphram of the pump may be broken....

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'69 Camaro RS/SS-350 - Daytona Yellow
'95 Camaro Z-28 - Sebring Silver
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post #6 of 8 (permalink) Old Mar 28th, 00, 02:39 AM
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yeah, I just had the same problem, actually still having it, turns out the spring in the front on the linkage that controls the squirt response was WAY off. and it was OverJetted. if I rolled into it it was fine. but a quick stomp would POP the carb into a backfire and scare me that it would blow out the powervalve. so After a few jet changes , tests , and more changes it seems to be fine now. not only did it help the popping and backfireing on a stomp, but I now get better Gas milage, (considering I would only get 5 to 6mpg if I was lucky before)

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post #7 of 8 (permalink) Old Mar 28th, 00, 01:43 PM
 
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Cool

I have an 83 Z too it was doing the same thing then I noticed the temp would change up to 30 degs. I timed it set the carb changed the filter checked the fuel presure .It was none of the above it was the computer screwing up it controls everything on that year. If you can't find it you might check that out.
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post #8 of 8 (permalink) Old Mar 29th, 00, 06:04 AM Thread Starter
 
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Cool

You know the funniest thing.. I popped open my hood looked down and saw that the hose connected to the fuel pump was kinked
I fiddled with it swquueezd it and twisted it till it was unkinked, now my car has done it since. Im still not totally positive that was the problem, but it aint doing it anymore.
I got all my acceleration and power back baby.. oh yeah.. stay off the sidewalks..
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