Help!!! Fouling Plugs to Idle Issue!!! Please!!
As you know from a previous post, I was having an issue with fouling plugs. It apparently was caused from the PCV sucking oil. I was given the advice of course not to just do away with the PCV. So from what I understand, the short valve covers had no baffles, but the stud girdles were supposedly supposed to act as baffles but apparently not. So I bought tall valve covers with baffles and put the PCV system back on. I hope this will solve that issue. So far I think it has. Now I installed brand new plugs, wires, and even replaced the Carb with a new Quick Fuel SL-750 as there was speculation that the carb was bad. I set the total timing at 36* at about 3600rpms. This makes the initial about 12*. The car seems to run fine but will not idle worth a damn. The best vacuum I get is 8-9 at idle. Turning the idle mixture screws in or out doesn't change much at all. The vacuum pretty much stays between 8-9. The only change in vacuum seems to be if you turn the screws to where they are almost at seat, then the idle will drop. Back them out 2-3 turns and it don't change the idle much at all. Vacuum pretty much just stays between 8-9. I set the curb idle at 1000. Put the car in drive, the idle drops to a steady 900 for about 30 seconds or so, then fluctuates back and fourth between 500-900 and acts like its going to stall. Put it back to park and it goes back to 1000. But wait, that's not all. Hit the throttle a few times and now it stays at idle at about 2000 and won't come back down even hitting the throttle a few more times. Put it back into drive and it will drop it to 1000 and seem fine. Put it back in park and its back to a normal 1000 again. Put it back into gear, and its back to 500-900 and wanting to stall. This will then just keep going back and fourth, 2000, then back to 1000, etc. I might get lucky where it stays at 1000 in park, and a steady 900 in drive, but that might be 1 out of 5-6 tries. I can't just keep a steady 1000 and a steady idle in drive. But drive down the road cruising around, it runs like a champ. What is wrong with this thing? Is the Quick Fuel carb junk? I never had problems with the Edelbrock on my other car or the other engine before I put this new crate in. Please, Does anybody have any knowledge on what this seems to be. Help!!!!!!
Engine is a new crate motor, 383 stroker, less then 400 miles on it, Petronix Flamethrower II Distributer, mechanical advance, Howard Cam, 530/545, Quick Fuel SL-750 Carb.