mbavers
Senior Member
It is a 1974 model, non turbo. The dozer always starts easily and runs fine for the first 1/2 hr to 1 hr, then a gradual and steady power loss right down to engine quitting, over a period of about 5 seconds or so. I tried moving the throttle as the engine was dying; made no difference. I replaced both fuel filters but the same thing keeps happening. Yes, I bled the filters. After it quits, I can start it right up and continue working for another 1/2 hr to 1 hr. It seems like it must be a fuel problem, but why would it run so good for an hour or so, and why would it start right up again?? Air pre-filter is clean and last I checked the main air filter was good. Fuel looks good and 1st stage glass filter bowl is clean.