What would make Carb overflow when hot?
#1
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What would make Carb overflow when hot?
Its an HP500 carb, we have already rebuilt it, set the float levels multiple times and it keeps doing same thing,
once you have been out running for a while and idle down to dock it will sputter and be way rich, as you look down carb bores you can actually see fuel trickling out of tubes. Makes it a scary propisition to dock.
When its cold it does not do this, idles perfect , nice 13.9-14.1 AFR , no fuel dripping.
Driving me bonkers..
Its sitting on a Ebrock Victor Jr with no heat passges so intake stays relatively cool.
once you have been out running for a while and idle down to dock it will sputter and be way rich, as you look down carb bores you can actually see fuel trickling out of tubes. Makes it a scary propisition to dock.
When its cold it does not do this, idles perfect , nice 13.9-14.1 AFR , no fuel dripping.
Driving me bonkers..
Its sitting on a Ebrock Victor Jr with no heat passges so intake stays relatively cool.
#5
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Check the floats to make sure they are not filled with fuel.Also have you replaced the fuel pump with a higher volume. Those needle an seat cant take any more than 7 lbs .
#6
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not the vent tubes, it leaks out the venturi where fuel normally comes out when it is running.
Stock fuel pump.
Only does it after it warms up so if it is the float wouldnt it do it all the time?
Thanks!!
Stock fuel pump.
Only does it after it warms up so if it is the float wouldnt it do it all the time?
Thanks!!
#10
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Join Date: Dec 2003
Location: Los Angeles California
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The only thing that will make fuel trickle out of the boost venturi at idle is the fuel level is too high in the fuel well. Why it only does it when warm is the mystery. Are the carb bowls properly vented?