Intermittent missing

[Grackle]

Hey guys,

I have a problem with my 86es (all stock m20 afaik). Under moderate to heavy acceleration the car has a miss, not all the time though. Also, sometimes it feels like it drops a cylinder, hard enough that the whole car jerks. It seems to do it only above 3K and when I am at about 1/2 throttle. If I accelerate easy it doesn't seem to do it. Where should I start looking? Most of the ignition parts "look" recent (not super grimey, etc).

Thanks

[ahlem]

Try the big rubber "L" shaped hose going into the throttle body.
It may have a crack on the underside. It also sounds like a fuel pump starting to fail. Check fuel pressure.

[Grackle]

It might be the fuel pumps, it is really inconsistent. I drove it home today and it didn't do it once. Did it twice on the way into work in the morning though.

[Gregs///M]

Bad AFM can also do this. Sudden and brief power loss.

[Grackle]

Bad AFM can also do this. Sudden and brief power loss.

Hmmm. The previous owner was having a problem with the car and had a shop replace a bunch of parts on the car trying to figure it out. I think they did this. I'd have to look at the paper work I got with the car.