When you say run on do you mean the engine runs normal after you
shut it off or do you mean it knocks and chugs before it dies out?
...Art
On Fri, 10 Oct 1997, Scott Gardner wrote:
> Since I've gotten the rebuilt engine back, I've noticed that it will
> sometimes run on when I turn the key off, and make this wheezing,
> death-rattle sound as it does. The run-on lasts about three seconds
> when it happens. Nothing's changed with the engine partswise since
> before the rebuild with the exception of the addition of a Piper 270
> cam. The pollution control has been gone since I've owned the car.
> It doesn't have an anti run-on valve, but I don't think the '72 model
> had it anyway.
> The engine has about 1200 miles on it since the rebuild. I'm going
> back in tomorrow to adjust the valves, re-torque the head gasket,
> adjust the timing, replace the plugs, colourtune the mixture, and
> change the oil again, so I'll let you know if any of those were out
> of whack.
> What is the usual cause of run-on? I've been running 87 octane gas
> since I've owned it with no problems, since the compression ratio is
> so low. Could the full rebuild have tightened things up enough that
> I need to go to a better grade of gasoline?
> Scott
>
|