Join Date: Aug 2010
Thanked 0 Times in 0 Posts
Rep Power: 0
This could almost be registered as an OMG. Everything everyone has said could be legitimate issues with your motor. Diesels are very finicky creatures. They must have clean fuel and clean oil. These two points can not be underscored enough. I change my oil every 75 hours and change the oil filters every 25. They are really cheap. Fuel filters I check the racor each start up and change the fuel filters every 75 hours. Overkill? Absolutely. But it's cheap overkill and not difficult to perform. You may indeed have an injector going bad. They are very simple to have flow checked at a shop. Your mixing elbow could also be clogged with soot as could the manifold. It could also need the valves re-set.
Best tip I can give on any start up is this. Upon start up, keep your RPMs to a minimal. High revs on a cold motor are only hurting the engine. If you are going to sit at the dock put the boat in gear. These little engines must be under a load. Some of the biggest mistakes made by sailboaters are not allowing the engine to reach full operating temeratures before shut down, not running the engine under a load, especially when charging batteries and dirty fuel, filters etc.
Finally, even if it smokes at start up, does it run fine with the smoke going away in a few minutes? If so, I'd have a flow test done on the injectors and check the mixing elbow and manifold for soot build up. If those damn pipes become clogged with rust and soot they have a pronounced effect on the motors operation.