Once again I thought I had pushed this problem out of exsistance, changing out all of the injectors made this little problem vanish for a short while yet once again it has reared it's ugly head. My Car is a 1983 240 GLT (Intercooled) b21ft/k-jet.

The problem itself is random at best, sometimes the car will run perfectly, at other times it starts stumbling around 2.5k-3.5k RPM - the car itself will be jerking back and fourth violently as if missing on a couple cylinders. It will not improve by pushing down on the throttle more, and around 4k RPM the car will not accelerate further.

I'm confused as to what exactly could be causing this problem. I've found similar problems with newer model cars, but I think the same information would no longer apply to my own.

Any Suggestions -

And thanks to those whom suggested where I look for my oil leak - it turned out to be a cracked oil feed for the turbo, which was leaking and running back along the side of the engine - from there it ran down to appear it was more or less comming from the rear seal.

Thanks,

Jeff