I recantly tuned up my 4.2L, and it runs better than I barganed for.(even with the carter)
I was curious to see what the timing was at idle, it was at around 0-1* BTDC. I reved it and it advanced like normal.
On the return it went down to 1100RPM and 4* and abit later the timing kicked back down to around 0-1* and 650RPM.
Is this supposed to happen?
Does it hurt it to run at soo little advanced?
Any suggestion would be great, because I dont want to blow this motor at this time.
I set the timing to within those specs.
and at 1600RPM it is always at those marks.
But I want to know how far down it should go at 650RPM, as I said, mine is at 1-2*. All I want to know is if that is safe?