|
Re: engine smoking
My instinct says rings. Oil being sucked past eight 0.3438" valve stems is insignificant compared to eight 4.000" rings.
Smoking when letting off the accelerator while going down hill with truck in gear is classic sign of rings since you are essentially creating a high vacuum situation in the cylinders.
Using a bore scope to observe carbon wash patterns on the pistons would be very helpful here.
__________________
1969 c-10 Step Side Long Bed. I-6 250cid =  = 1969 Pontiac GTO hard top. 400, 4-speed.
|