Engine stalls when idling for long time
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Joined: Feb 2006
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From: Australia
Engine stalls when idling for long time
Hi all,
Well it seems that I'm still having problems.
I have a 305 TPI Holley Stealth Ram set up on my 86 Trans Am.
The latest one is that my Engine stalls when idling for long time.
The engine will sit there smooth as then the temp rises to normal op temp, still ok, then the fan's kick in and soon after it dies.
If I restart it will be fine for a little while, then try to correct it's self by lifting the rev's then die again. If I then try again it will start then stop then start then stop. Even if I hold the throttle down!
If I wait for 30 Seconds then start again it runs like normal then after a min or so it stalls again!
To add I also just went out to test it again and it would not start unless I held my foot flat then when it did it was pumping out back smoke everywhere and only just running. I turned it off then started it again and it was perfect again!
Well it seems that I'm still having problems.
I have a 305 TPI Holley Stealth Ram set up on my 86 Trans Am.
The latest one is that my Engine stalls when idling for long time.
The engine will sit there smooth as then the temp rises to normal op temp, still ok, then the fan's kick in and soon after it dies.
If I restart it will be fine for a little while, then try to correct it's self by lifting the rev's then die again. If I then try again it will start then stop then start then stop. Even if I hold the throttle down!
If I wait for 30 Seconds then start again it runs like normal then after a min or so it stalls again!
To add I also just went out to test it again and it would not start unless I held my foot flat then when it did it was pumping out back smoke everywhere and only just running. I turned it off then started it again and it was perfect again!
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Joined: Jan 2000
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One possibility is that the injectors are not atomizig fuel adequately, and extra fuel is puddling in the intake until there is enough extra liquid fuel to choke the engine.
Another possibility is that the FPR is leaking fuel into the plenum through the vacuum hose.
In either case, flooring the accelerator on startup (clear flood mode) will stop injector pulses and admit a lot more air to help disperse the extra fuel. The black smoke on eventual startup seems to indicate an excessive amount of fuel.
Another possibility is that the FPR is leaking fuel into the plenum through the vacuum hose.
In either case, flooring the accelerator on startup (clear flood mode) will stop injector pulses and admit a lot more air to help disperse the extra fuel. The black smoke on eventual startup seems to indicate an excessive amount of fuel.
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