Hi all,
Thanks in large part to Mercedes Source, I have a 1981 300D that runs quite well. Really no running problems except on one hill in my normal commute. The car starts to 'stutter' about half way up this 1+ mile incline. Like it's starving for diesel (I've replaced pre-filter and FM100 canister) or has an air leak at high load. I've tightened all the hoses. BUT, this all really started sometime after I ran B99 for 4 or 5 tanks this summer. Prior to that, the car would actually accelerate somewhat up the hill in question. I do have Viton return lines and the special lines supplied with the FM100 Stanadyne filter.
My next suspects are connections/hoses (again) and tank strainer (which I have not touched yet).
Am I on the right track here? Car seems to have fine compression - starts right up at 30 degrees, stops immediately, accelerates as good as it gets for a 300D under normal conditions.
Thanks,
Doug