E30 Zone

My BMW is the 320, and it does sound rather tappetty.

124k miles

Just had new heat shields, cambelt and filters and oil etc....

when i rev the engine...it sort of coughs, and misses, then picks up the power....

it can do this for ages, making it impossible to drive because it kangaroos....

the hesitancy/cough is always at the lower end of the throttle range, just as the revs begin to rise...

once revving, it seems to 'clear it's throat'...

i am going to take a video and put it on you tube to explain it better

How is the ignition system? New leads, distributor cap, rotor arm etc can go a long way if the current ones are past their best.

Check all the hoses to the intake manifold for air leaks - particularly the bellows from the airbox to the throttle body - these are a common fail point and a split can lead to the symptoms you mention.

Tappety noises are something else.

Russ, Rob...

many thanks for your tips...I will look at this tomorrow hopefully.

It has new heat shields, spark plugs, distributor, rotor arm, air filter, oil filter, ht leads

I ave not looked for split hoses, so will do that....

here is a vid of what is happening...it might explain it better than i can

it starts at about 1 minute in...kangarooing

Thinking about it mate thats what my 525i E34 did when i first bought it and it was a split hose to the inlet manifold as Rob said above, had slipped my mind until he had said that.