I am lookin into buyin a 86 300 but i test drove it and i seems to have no power over say 55 mph. Besides checking the fuel filters is there anything that typically goes wrong with this year car? Injection pump, fuel transfer pump, relief valves??? Any input would be appreciated.

Thanks

Kurt Kiefer

300D - SD - SDL? Some models can get the banjo bolt gunked up and it reduces the boost to the turbo. Dirty Air Filters can also rob significant power as well as valve adjustment on the D and SD models. Are you familar with these cars to know they don't excelerate like a gasser - no offense, just have to ask.

__________________
BENZ THERE DONE THAThttp://www.peachparts.com/shopforum/...c/progress.gif
15 VW Passat TDI
00 E420
98 E300 DT
97 E420 Donor Car - NEED PARTS? PM ME!
97 S500
97 E300D
86 Holden Jackaroo Turbo D
86 300SDL
(o\|/o)

The 86-87 SDL are fast,no valve adjustments on them,cracked heads on occasion...see if the trap oxidizer is still there,will be most likely plugged,free recall at MB dealer,maybe a free exhaust too...anyway,if the muffler looking thing is still on the pass side along the engine,it needs to be removed.

I had a '79 300CD I know the meaning of the word slow, I'll check out the exhaust if I can, but you say that MB will do it for free? I was a diesel mechanic by trade for 5 years or so when I was working through college so i know my way around diesels in general. Where is the Banjo bolt located?

Ze Banjo Bolt

Attached Thumbnails

 

__________________
BENZ THERE DONE THAThttp://www.peachparts.com/shopforum/...c/progress.gif
15 VW Passat TDI
00 E420
98 E300 DT
97 E420 Donor Car - NEED PARTS? PM ME!
97 S500
97 E300D
86 Holden Jackaroo Turbo D
86 300SDL
(o\|/o)

Ah, ok thats on the feed and return for the injection pump right?

__________________
2003 Dodge Ram 2500 Cummins - Georend fully built trans, Banks Big Hoss Bundle, Smarty Tuner, 5" turbo back exhaust. 500 HP and 1100 ft/lbs to the ground.
1979 Mercedes-Benz 300CD - Lost to a four car pile up on 275, Thank You Michigan Drivers.
1986 Mercedes-Benz 300D - Sold, Euro non-turbo car.

I think he really meant the alda.

First thing to do is change the fuel filters, then check the alda fitting for being clean. If it is plugged or has a broken or cracked line you will not get any extra fuel when it comes on boost, so you will not get as much power as with a na engine, at least it feels like less because of the higher rear end ratio.

Tom W

__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.