RepairPal is your advocate for car care advice and guidance

Q: blue smoke from exhaust lots of.miss fire as well on 1998 BMW 540i

soon as u start up clouds of smoke
Get a Repair Estimate
Guaranteed by certified locations nationwide. Learn more
RepairPal estimates are guaranteed at over 1,700 quality certified locations nationwide. Learn more
| |
Sounds like valve seals. Engine oil in the top of the head will drain down the valve stem through a worn valve seal when the engine is off. Once you start the engine the oil in the combustion chamber will burn casuing smoke. This is not a cheap repair but you might try an oil conditioner product.
this may be a oil superater under the intakemanifold also oil tube be sure and check it too.i have a 540i thats what it was.the miss is oil fauling your plugs.dirtcar in
Didn't find what you were looking for?