All,

I have been noticing white smoke at idle for a while now on my 300SD. The smoke smells fuel rich and I am almost certain it is related to injection timing. Before I start assuming anything, I will be doing the following:

Valve adjustment
Compression test
Check cam timing by lining up the marks
Pop test injectors
Check compressor shaft play

Injectors were rebuilt less than a year ago with new Monark nozzles. All pop tested and balanced. Valves were adjusted about a year ago. Car has been running on straight D2 for over a month.

Should I do a wet test when I check the compression? I presume as usual, the engine should be warm during the test.

I need to look into drip timing, etc. the IP if I do not see an obvious problem with the above tests.

Any suggestions or advice is appreciated.

__________________
1991 F250 super-cab 7.3 IDI. (rebuilt by me) Banks Sidewinder turbo, hydroboost brakes, new IP and injectors.
2003 S430 - 107K
1983 300SD - Tanoshii - mostly restored ~400K+.
1983 300SD - Good interior. Engine finally tamed ~250K.
Monark Nozzle Install Video - http://tinyurl.com/ptd2tge