Rough running

[Darrenn]

Hi

I wondered if anyone has encountered this before?

My 1990 318is on occasion runs really rough first thing in the morning.

Symptoms are hunting and revs dropping off to the point of almost stalling and occasional stalling.

The thing is the problem is only intermittent and most of the time the car runs perfectly. I've tried the usual stuff i.e new plugs and leads etc.

Kind regards

Darren.

[NovemberSun]

I think idle/cold start problems are mostly caused by an air leak so it might be worth checking for air leaks/cracks on your rubber intake boot, Idle Control Hose, PCV hose, oil dipstick seal, oil filler cap, cylinder head cover gasket and even injector seals/O-Rings. Most people check visually or spraying a can of carb cleaner over these areas with the engine running and listening for changes in your idle. Also might be worth cleaning out your Idle Control Valve with carb cleaner.

Might be better for some experts to help here as im new to mechanics but at least you can check these areas for free/low cost Good luck

edit: heres a good link http://www.verrill.com/car/idle/e30_idleproblem.shtml