[Formulajones]

All good suggestions.

Like JLMounce said, the system needs at least 10 volts while cranking or it won't fire.

That would be the pink wire he is speaking of. That little 16-18 gauge pink wire needs to have 12 volts with key on, AND while cranking. Usually ran to the ignition switch.


Otherwise as Scott mentioned, it'll have to do with the prime shot or the cranking pulse shot while under the warmer conditions. So those tables will need to be looked at.

Generally speaking, if you pick the "street/strip" camshaft selection or anything beyond that to get your base tune loaded, the Holley tends to have overly rich start up tables. Picking a stock camshaft, as odd as that sounds, has start up tables that are more in line.

The 150 prime shot I generally don't have to mess with and leave alone. On hot cranking fuel I find that if it closely matches your lbs. per hour idle fueling then you're right in the ball park. Most engines generally idle with 10-12 lbs. per hour of fuel. So your hot cranking fuel, say 160 degrees and above, shouldn't be way above or way below that.