Unplug the EGR valve and drive see if it makes a difference. Sometimes when
the EGR control unit starts to fail, they open at the wrong time.
Steve
"Greg" <nospam@nospam.co.nz> wrote in message
news:lENqd.18620$9A.306701@news.xtra.co.nz...
>I have a '89 LX Civic with a D15B engine, Carb, 5 spd. 220'000kms. NZ
> assembled, no emission control etc.
> Often lately, under light load, the engine violently stutters, once loaded
> up, irrespective of rpm, it runs fine.
> The problem usually goes away if left overnight, but not always. Most of
> the
> time this happens when the engine has been at operating temp. for a long
> while, but may still be there even after hours of cool down.
> Car has been fairly well maintained, but nothing had be done immediately
> prior to the problem first time.
> Any ideas on where to start looking? I'm on a budget, so I'd rather not
> use
> the hit & miss theory by replacing parts until I find the right one.
> Thanks in advance for any help.
>
> Greg.
>
>
>
>