M42 power issue

[Cyman]

Hi,

I was driving down the motorway yesterday in my 318is, (3 up, with luggage) at about 60mph.

The car started to feel like it was struggling, as if driving into a headwind, then it felt OK. Then it struggled again. This kept happening for a minute or 2, so I changed down into 4th and accelerated to 80 with no problem.

Back in 5th, I dropped to 60, and soon the engine felt like it was struggling again...a sort of on/off feeling, like an intermittent flat spot.

I stopped and checked the air hoses, HT leads, belts, coolant etc, but all was well (apart from a few cracks in the short hose that runs from the front grill into the air filter). The idle was steady at about 850rpm, and there were no obvious sounds.

Once i'd dropped people & luggage off, the car seemed quite happy accelerating and cruising at 70 with no problem.

Any idea what was causing this?


Cheers!

[Jhonno]

A lack of cylinders..

[Alex]

sounds like my corsa when that had a knackerd air flow meter, it was worse with weight in the car ie some loose change

[320ise]

do you post lack of cylinders for every thread jhonno?! seriously m20's/m50's/m30's could all have this issue to! and it starts a 4 pot 6 pot war on every thread it you do it on! its not really funny anymore dude! no offence. all e30's are great weahter they have 4 or 6 pot or no pot! there beemers let this silly war die and unite as e30 enthusiasts!

[robbo86]

do you post lack of cylinders for every thread jhonno?! seriously m20's/m50's/m30's could all have this issue to! and it starts a 4 pot 6 pot war on every thread it you do it on! its not really funny anymore dude! no offence. all e30's are great weahter they have 4 or 6 pot or no pot! there beemers let this silly war die and unite as e30 enthusiasts!

+1 not directed specifically at you Jhonno, but someone always gets in there and it is a bit on the tedious side! If I wanted a 2 or 2.5 I would buy one!