Missing / lack of power, intermitant

We will find out later today :D

Gonna have them out and see whats what, im inclined to agree now btw, car stinks of fuel when ticking over, smells very rich, almost as if the plugs are not burning the fuel thats being sent, car is still completely standard atm with an original ECU and throttle body.

Im guessing that running my viper 2 chip ( which was programmed to support the big bore throttle body ) without the BBTB for the first day fouled the plugs - hence when I tried to figure out what was going wrong by replacing and switching parts around the damage/crud was already on the plugs ?

Anyways, will see later.

Mark

Nah, off to pick up some new plugs in a few mins just in case tho, if the other plugs are any different when I take those out ill post back - if this doesnt cure my problems then its time for the BMW diag I guess.

Cheers

Mark.

Ok the plug that came from cylinder 6 was fouled, deposits of Carbon and unburnt fuel, replaced all plugs and took it for a run, still feels down on power to me even with new plugs in it, however the engine doesnt feel so lumpy now and has a smooth tickover - im pretty sure replacing the pipework etc will have been mainly to blame for that one tho.

Whilest replacing the engine cover I noticed a tiny amount of milk on the oil cap, hope this isnt the sign of things to come , possibly explain the power loss tho I guess, also the piston was at the top of the bore on #6, I could clearly see the top had a heavy deposit of Carbon build up on it, prolly looks worse than it is tho.

Readying myself for a headgasket job I guess ( comes with owning one of these cars I guess ).

Could anyone tell me roughly how big a job it would be to do the head gasket if its shot ??

Before I jump to conclusions im going to get the BMW DIAG done just in case, im hoping the Lamba Sensor is screwed or something similar.

No pic of the fouled plug im afraid as my old digi cam refused to focus to make it worthwile posting.

Mark.

Mark, that plug looks ok. Not really fouled at all.

As for the milk on the oil cap, believe it or not, this is kind of common with the M50. Most M50's that come accross my way are the same. It's just condensation at the top of the motor. If you don't have anything in the oil itself your generally good to go. Short trips that don't allow the oil to warm up and stay warmed long will contribute to the condensation.

Hope this helps,

Jake

Ive now replaced my Lambda Sensor - car feels much much better atm ,power feels like its back, no more rough lumpy idle and smellin too rick on tickover, hopefully this is closure to my problem.

Cheerz

Mark.