Originally Posted by
BMW4LIFE
let me ask you guys this... is it worth doing the fllowing;
change plugs
air filter
fuel filter
throw in some injection cleaner (but i use 91 as it is =/ )
Didn't I already tell you to pull out those +4's you've got in there and at least put the proper OE plug in, if you didn't want to give the E3 plugs a go?
Air filter is way past due for a change.
Fuel filter could be changed out by now.
And yeah, I'd go ahead and run a bottle of Techron through the engine. Don't care if you use 91 or not. A little Techron every now and then (or better yet Seafoam in the gas) is good to clean things up a bit.
Would put Techron or Seafoam in the tank, and change plugs right after you fill up with the Techron/gas or Seafoam/gas mixture. That way it'll burn the cleaning mix better. Change the air filter at the same time.
Then once you've gone through the tank with the fuel system cleaner go ahead and change out the fuel filter.
New air & fuel filters as well as new (and proper) plugs will certainly help it run smoother. If it's still a little off then you can start looking at other possible culprits.
Cosmos Black/Black 1995 540iA M-Sport
BMW Individual Exclusive Edition, 1 of 65 total, 9/25/95 Build