View Full Version : 535i spuddering need help

Lee in Ottawa
04-21-2004, 04:32 PM
Hey guys, my 535i is running really bad. It seems like it's missing. It idles bad and there is a huge power loss. I know i shouldn't but i need transportation so i've been driving it. It's especialy bad at lower RPMs and smooths out a little in higher rpm but is still shit
My fuel filter is new and I just changed my plugs, cap, rotor, oil?
I have a set of new wires on the way hopeing that they'll be the answer to my problems but I have my doubts.

Any ideas about what it could be.

Thanks in advance for all your help.

04-21-2004, 06:06 PM
Possible oxygen sensor, also check your compression.

M30 motors are not known to be smooth running engines.

04-21-2004, 09:25 PM
were the plugs gapped properly? what plugs were used? did you check to see if all spark plug wires are connected properly? how is the timing? all hoses connected properly?

How is it idling?
How is the cars temp after a while? Is it overheating?

after that check your fuel pump I guess...

05-12-2004, 08:58 PM

I have the same problem bro, my 85 535 starts fast but it sounds like there no compression... and idels like shit, The intake valve senser is ****ed.... I need a tune up too :(

Lee in Ottawa
05-13-2004, 11:48 AM
I went ahead and changed the wires and she went back to normal!! I don't know why I didn't test the wires in the first place, oh well now I have new plugs, wires, cap and rotor and had a fun time working on my baby. Thanks for all you input guys I really apreciated it.