Installing new M103 fuel injectors, How sould they be oriented? - PeachParts Mercedes-Benz Forum

Hit Man X · #9 02-08-2010, 10:02 PM

Quote:

Originally Posted by Wolfe190

Mine has just over 160,000 miles.

After I replaced the injectors, it made a big difference in start-up, and it idles much better, but didn't actually fix the problem I was going after:

When I drive my car nicely (shift at 3500 or so) my car doesn't idle down and makes shifting a PITA because you have to slip the clutch when going into every gear. When it is cold this problem is non-existant, but as the engine warms up this condition progressively gets worse

However, when I drive it hard (shift at 5500 or so) it revs down normally and shifting is as smooth as it ever was, regardless of engine temp

I'm pretty stumped on this...

Any vac leaks? The M103 suffers from the big time, but is VERY easy to reseal unlike the M116/7 V8s. I had two leaking three way connectors also.

Oil leaks are vac leaks. All the tubing under the hood can get brittle easily with age. Check the oil pan gasket too.

Also use a meter and check your engine senders on the head.