By Fox 3 - Thu Feb 03, 2022 9:28 pm
- Thu Feb 03, 2022 9:28 pm
#131905
I have a 20 year old BMW X5 with the straight six M54 motor. 205,000 miles. For first 80,000 miles it burned zero oil.
Recently it was burning 1 qt every 600 miles and then I switched to Torco ring sealing oil and consumption was cut in half.
The engine was running rough at idle with shakes at stop signs for the last 50,000 miles, I replaced everything including motor and tyranny Mounts, no dice, then I recently had a check engine light on a long drive and a code for a misfire on cylinder 6. The mechanic said the plugs were fouled and recommended replacing the ignition coils and plugs. The ignition coils were 20 years old. Plugs replaced on schedule every 100,000 miles.
Now the engine is purring smooth as a kitten, no more shakes at all. But the mechanic did cylinder compression tests before replacing the coils and plugs and all the cylinders were at 175 except for cylinder #1 which was at 150. Seems like a big delta.
Should I ignore this or do something preemptively?
TIA. Checked various forums and could not find a straight answer.
Recently it was burning 1 qt every 600 miles and then I switched to Torco ring sealing oil and consumption was cut in half.
The engine was running rough at idle with shakes at stop signs for the last 50,000 miles, I replaced everything including motor and tyranny Mounts, no dice, then I recently had a check engine light on a long drive and a code for a misfire on cylinder 6. The mechanic said the plugs were fouled and recommended replacing the ignition coils and plugs. The ignition coils were 20 years old. Plugs replaced on schedule every 100,000 miles.
Now the engine is purring smooth as a kitten, no more shakes at all. But the mechanic did cylinder compression tests before replacing the coils and plugs and all the cylinders were at 175 except for cylinder #1 which was at 150. Seems like a big delta.
Should I ignore this or do something preemptively?
TIA. Checked various forums and could not find a straight answer.