Article by: Sean Article applies to: all models with the V12 M70 engine. Problem: Smoking engine. At first I thought the massive oil consumption was also related to the worn valve stem seals, but later (after replacement of the seals) it proved I was wrong, at least in this case. […]

Article by: Sean Article applies to: all e24, e28, e32, and e34 models (some details regarding automatic transmission lines to not apply to models with standard gear boxes). Problem: Leakage of coolant at the point where the upper trans-cooler connection is attached to the radiator body. This is just below […]

Article by: Sean Article applies to: all models with the M70 V12 engine. Problem: People who often visiting this site are probably aware of my ongoing problems with hesitating, surging, running rough, erratic idle, hunting idle and stalling when accelerating. Folks who have some years of experience with working on […]

Article by: John Taylor with edits, comments, and photos by Yutaka Nakagawa and Sean. Article applies to: all models with the M70 V12 engine. Comment by Sean750: John experienced some intermittently tapping lifter noise with his ’89 750iL. He wrote a story about it , took some photo’s and gave […]

Article by: Sean Article applies to: all models with the M70 V12 engine. Problem: The last couple of months my V12 developed a rough idle. These engines can run like sewing machines, but not in my case. More like a 2-stroke chainsaw…first I looked for the obvious problems. Vacuum hoses, […]

Article by: Johan Article applies to: all e32 and e34 models. Problem: The fuel gauge on my car was erratic in the last 40 liters. The last 20 where the worst. The needle would fall from 20 liters to 0 and go back up to 20 in 2 to 3 […]