I have a 1997 bmw 540i and i think it is running rich sometimes it just starts shaking randomly and exhuast smells bad like raw fuel what can it be ?
One possibility is you have some intermittent coil fault.
Scanning the car to see what codes are being generated is always a good start.
Sent from my G8141 using Tapatalk
I already did spark plugs and has no codes put in some bosh. It also sometimes smells like unburnt fuel
What did your old plugs look like?
How many miles on the car?
Could be the CAT's are on the verge of crapping out.
Has 161 k miles. Old spark plugs were some cheap autolites they looked like the car was running a little rich.
- - - Updated - - -
Looks like the cats on the car were previously changed.
Bookmarks