Quote:
Originally Posted by 1QuickS
Trackrash: I assume PMO "Anti-percolation" modification has been performed? If so then this partially explains your hard, hot re-starts.
.
|
Yes and no. I had originally done that mod. However one of my carbs, at #1, was leaking out upon shutdown. There was no peculation, just gas dribbling out of the throttle plate and fouling the plug upon restart.
I enlarged the extra holes that I had drilled there, with no improvement. I then plugged those extra holes completely, but only on the left carburetor. None of that helped. No difference between carbs.
What helped is lowering the float levels slightly to the very bottom of the lower line on the glass vile. I have not noticed any fuel leaking or fouled plugs since.
The other thing I did was go to 65 idle jets. Funny it doesn't run any richer with those jets, but runs much smoother.
The problem I was describing isn't hard starting. It will start up just fine. Problem is it won't idle, without my foot on the throttle. The AF on my gauge will read 15 or 16 -1. After a few minutes of driving things return to normal with the AF around 12 -1 and a smooth idle.
The carbs get heat soaked after shut off and that just causes them to run lean until they cool off from the air being drawn through them.
Yes, I have the insulators under the manifolds.