Sorted one fault but not the long term one.

[ah]

The fault I’ve sorted is that it was running on 5 badly for half an hour and then run on 5 and half for the rest of the time, anyway tracked it down to no.5 plug lead corroded.Anyway for those who don’t know about my 10 year old fault, driving down a road at 40/50/60 and roll off the throttle down to 1500/2000 rpm and the car kangaroos, also if the engine is reved up the revs drop and it nearly stalls but it never has.Over the years I’ve changed a lot of things but with no luck.

[Bonymaenjack]

The fault I’ve sorted is that it was running on 5 badly for half an hour and then run on 5 and half for the rest of the time, anyway tracked it down to no.5 plug lead corroded.Anyway for those who don’t know about my 10 year old fault, driving down a road at 40/50/60 and roll off the throttle down to 1500/2000 rpm and the car kangaroos, also if the engine is reved up the revs drop and it nearly stalls but it never has.Over the years I’ve changed a lot of things but with no luck.

I have virtually the same problem, I ease off the throttle and the car sort of wants to stall but doesn't and the engine seems to run unevenly, foot down and she's fine with no hesitation.

[ah]

Couple of questions, is yours a 320i, and does yours happen around the same revs.

[Bonymaenjack]

Couple of questions, is yours a 320i, and does yours happen around the same revs.

no she's a 2.5 but normally when I come off the pedal at around 30mph when she sounds/feels like a misfire, , fitted new everything on the ignition side which is no guarantee I know

[ah]

So we both talking m20 engines, we have properly both changed the same amount of things, anyway if I every sort mine I’ll let you know.

[twright]

My M40 powered car did that until I raised the idle (tickover?) speed a little.

Can you change the idle speed on an M20?

[ah]

My M40 powered car did that until I raised the idle (tickover?) speed a little.

Can you change the idle speed on an M20?

I know where your coming from but my car is not idling slow, cheers anyway.