> Scott,
> Timing, too-high an idle speed, a portion of the head gasket protruding
> into the combustion chamber (unlikely) can all contribute to the
> "dieseling" that you are experiencing.
> You might try lowering the idle speed first; it's the easiest.
>
> My 0.02,
> -Vince
> San Antonio
>
Vince,
Thanks for the tip. I lowered the idle speed to about 1000 rpm,
which is the lowest it will idle smoothly. I think I need to get the
old SUs rebuilt and back on the car. I don't think the 32/36 is
acting right. With a completely fresh engine, I expected a smoother
idle, even with the Piper 270 cam. Ever since I bought the car, it
"shudders" at idle. It's not a constant shake, which I could
attribute to the cam, it's more of a "hunting" sound, with the
occasional shudder.
I'm not too worried about a protuding head gasket either, since I'm
only at a .030 overbore, but could a leaking head gasket cause it? I
need to re-torque the head from the rebuild tomorrow, and I've
noticed small bubbles coming out from the head gasket, but no leakage
to speak of. The timing is the only thing I haven't checked since
the rebuild, but that will be getting done with everything else
tomorrow morning.
Scott
Scott Gardner
gardner@lwcomm.com
www.lwcomm.com/~gardner
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