stumbling 4kcsq

[Brady Moffatt]

Jim,

Mine did the same thing, and what "cured" it was richening up the idle
mixture a bit. What  _caused_ the problem, though, was some vacuum leaks
(manifold gaskets, injector seals). Once those were fixed, the mixture had
to be leaned back out a bit. HTH.

Cheers,
Brady Moffatt
Montreal, Quebec, Canada
86 4ksq, 282,000km
72 Datsun 240Z, 180,000 miles

----- Original Message -----
From: "James D. Hanson" <jhanson at westmont.edu>


> My 87 4kcsq seems to have a problem... when accelerating away from a stop,
> the engine stumbles between about 1000 and 2000 rpm.  Accelerator position
> seems to have no effect.  If I rev the engine first a few times, then
> accelerate, there's no problem.  Similarly, if I don't give it a chance to
> settle into idle, its fine.  This happens warm and cold, though its most
> noticeable when the engine is warm.
> Any ideas what is causing this?
>
> Thanks,
> Jim
>