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Kirkham Motorsports

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  #1 (permalink)  
Old 03-26-2008, 11:20 AM
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It's probably heat soak into the carb. My car does the same thing in the summer when the air temp is over 100. About the only cure is to isolate the carb from the engine using an insulated spacer, or a turkey pan that seals against the bottom of the hood. Holley sells an aluminum plate and spacer that is probably better than thean insulated spacer by itself, but still probably not as good as a turkey pan.
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Old 03-26-2008, 11:29 AM
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Don't touch the throttle on re-start.
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Old 03-26-2008, 11:30 AM
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Quote:
Originally Posted by J Persons View Post
It's probably heat soak into the carb. My car does the same thing in the summer when the air temp is over 100. About the only cure is to isolate the carb from the engine using an insulated spacer, or a turkey pan that seals against the bottom of the hood. Holley sells an aluminum plate and spacer that is probably better than thean insulated spacer by itself, but still probably not as good as a turkey pan.

Thanks for the info. I may have to do the turkey pan. Do you need to remove the carb to istall it? I remember the PO telling me he had a hot starting problem as well, but said it was the coil getting too hot & due to the fact that is was mounted to the motor. He relocated to the fender wall.

Thanks again!
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Old 03-26-2008, 11:58 AM
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If you have a single line fuel system and an electric pump your fuel pressure can creep and over power the regulator and subsequantly your bowl fuel inlet needle valves, did on mine. That can cause the symptons you're describing. If you have a fuel pressure gauge at the carb you can watch it at idle to see what it's doing. If it goes past 8 or 9 psi then you've problems. You can drop your carb bowls levels and see if that makes the situation any better. At least that'll confirm and point you in the right direction. If you have a MSD distributor check the cap too. A poor spark and a rich condition can also be a cause for a hard start too.

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Old 03-26-2008, 12:57 PM
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Wow, perfect timing on this topic as I am having the same issue.

On the next hot restart I'm going to turn off my electric fuel pump and not touch the gas at start up.

Thanks for the tips guys
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Old 03-26-2008, 01:36 PM
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Quote:
Originally Posted by rbray View Post
Wow, perfect timing on this topic as I am having the same issue.

On the next hot restart I'm going to turn off my electric fuel pump and not touch the gas at start up.

Thanks for the tips guys
I am gonna leave the gas pedal alone. That was the one thing I did not try. I do not have a regulator. My carb requires 5-7 & the carter pump I just put in is at 8. The guys a Holley said a regulator would not be needed. I am also gonna leave the pump off when I crank it over & after she starts, I would put it on. We'll see what happens.

Thanks for the help guys!!
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