Jesus, your dealer and service advisor are one conglomeration of buffoons. Your check engine light is not on because of a fuel filter. In all of my years in the automotive business I saw one case of a fuel filter causing a check engine light and that was because the owner's exwife put sand in his gas tank which clogged the fuel filter (and the pump, injectors and fuel lines) thus triggering a CE light. Stop wasting your money or jumping to any irrational conclusions. I'm not sure of the mileage on your car but here are my suggestions. The first place that I would look would be the crankcase vent valve, aka pcv valve, aka oil seperator. With the engine running at idle, raise the hood and pull the dipstick. If you hear a honking, whining or groaning type of noise then you have a faulty crankcase vent valve. On some models there is also a small s-shaped vacuum hose connected to the ccvv that may also be deteriorated. This usually occurs around 45k but I have seen it as early as 35k and late as 65k. I would do a complete intake reseal which would include the ccvv and gasket; the front plate gasket and the intake to cyl head gaskets. Of course I'm assuming the dealer (the same one who told you the problem was the fuel filter) checked the easy and obvious possibilities like intake air boots, oil cap, gas cap and electrical connections. The other big problem on these V8's are the valve cover gaskets leaking oil into the spark plug chambers. You can remove the black plastic covers (2- 10mm bolts), remove the coil packs (2- 10mm bolts at each plug) and check for oil accumulation. If this is the case then you will need to replace both sides. If neither of these are the culprits then I would look to the catalytic converters (mainly if you have 75k miles or more). Usually when these are failing you can get under the car and whack them several times and here a rattling sound (but not necessarily always). These are just some common causes of check engine lights on the V8's. Yours may have some other problem that needs diagnosis by a competent shop.
STETT Performance -
921 J Place, Suite 200
Plano, TX 75074
OEM Repairs and Maintenance
Extended Warranty Service
Everything Performance (brakes, turbos, Nitrous, Cams, Complete Engines, Clutches/Flywheels etc)
STETT Performance Official Grand Opening BMW Meet, May 6th 11A-3P -- Music, Food, Drawings and Tons of BMW's go to
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
and register.. it's FREE