Bobby Thomas

OK, new engine with some upgrades (light-weight clutch, GHL -- wonderful -- headers/muffler). When the engine is cold, it starts immediately. If you shut it off for under five minutes, it will start right up. But, if it has sat for more than five minutes, it will not start until it is completely cold -- 3 or 4 hours. I know that the "brain" is getting false information from somewhere. But where? Anyone have any ideas?

Thanks,

Bobby

A930Rocket

Just along shot, but what about your fuel accumulator? If defective,it leaks down, there is no pressure and it's hard to start.

ZCAT3

Bobby - if by your reference to the car's "brain" you are refering to an ECU note that the 3.3 930 motors do not have an engine control computer. 930rocket's suggestion is a good start.