mopar performance distributor recurve kit

moparguy said
Makes sense, could it just be my choke out of adjustment? Although it does take a good 15 to 20 min. to clear up sometimes. It is currently set in the middle.

Just for the heck of it, try setting the base timing advanced about 8 more then where you have it now. I would do this the night before, then drive it cold the next day to see if it improves.

On the recurve kits they are suppose to have 2 differnent tesnios springs, one to allow partial advance by 1800 RPMS, and the other all in at about 2500-3500 depends on kit. I also have seen some issues that some carbs do not push vacuam to the distributor port when cold. You might want to look at that too. But if all seems ok and the advance helps it, I would use a timing light to graph what your total timing is at idle, 1500, 2500, and 3500 rpms. This input would be helpful. Some kits come in way to late for total timing.

And yes more fuel when cold will help a lean condition. When the engine is hot the fuel atomizes better, and takes less spark to ignite. That being said, things such as heat crossovers in the exhaust pipe and or intake crossovers in the heads or intake being restricted, plugged, or a stuck open vavle in the exhaust pipe for the heat crossover will make it an issue on an lean carb condition very noticable.

Lastly when the engine is hot the intake also heats up and will vaporize the fuel better too.

On new cars running injection they fatten up a bunch the fuel/air ratio and advance the timing when cold. Some even have preheaters in the intake air system.

Get some more details on the ignition 1st before we just throw a lot more fuel at it.