2001 200 hp yami hpdi question - The Hull Truth

pauliefish · 10-22-2008, 09:12 PM

I am going on a sea trial tomorrow with a cert. mechanic to test a grady. The engine has very low hours....50 or so... Is this an engine that will
routinely have problems? The mech. will perform compression test etc. he is also going on the sea trial as well.
Should I stay away from the hpdi and look for the 4 stroke? The boat appears to be in fantastic condition.
thanks

A1 Outboard · 10-23-2008, 06:02 AM

Only 50 hours on an 8 year old engine wil take the technician extra time to inspect carefully. That motor spent a lot of time just sitting and fuel could have left varnish deposits inside the fuel pump, lines, and vapor separator tank (VST). That makes for expensive repairs. Also the water pump should be changed out due to the age also, and inspect the drive belt for the high pressure fuel pump and the pump's oil should be changed.

Find a trained tech who is familiar with the HPDI's, especially the early ones like yours, and who will suggest all the filters be replaced, including the $90 mid-pressure one, and that the VST be taken apart and cleaned thoroughly.