the filters are not gunked up anymore I can see thru the 1st filter and the spin on one is also clear. if I disconnect the fuel line from the 1st filter it runs out like no tomorrow.

While it was running we pulled the first to injector lines off one at a time to try to isolate what injector and when we pulled the first 2 it ran even worse. so I assume it is not those 2 and also I have already tried running it without the gas cap on and still no difference. am I to believe I have a bad injector? The tick is really loud and very annoying.

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1st time Mercedes Owner.
1980 300D 123/130
what do ya expect for $600.00
Needs TLC