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Thanks for the info Terry. Actually, a regular OBDII scanner won't work on the truck because of it's inability to dig deeper into the diesel specific controls. I'll have to invest in something like AutoEnginuity software to do a good job of it. I just haven't gotten the cojones' to pony up the $400 yet...
What I found out this morning is that in the past, some enterprising mechanic had gone to replace a glow plug in #6, snapped it off and proceded to wire another one to the side of the engine block so as to fool the computer. As a consequence, I guess that pot is always running cold and has carboned up the injector. While warming it up, I noticed smoke coming from the exhaust which I figure is from poor atomization.
When I cracked the line on that injector, sure enough, the knocking ceased.
The saga continues...
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-Evan
Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63
Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250
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