2000 Yamaha 200 HPDI fired once then nothing. Its been sitting a year

sbklf

Petty Officer 2nd Class
Joined
Oct 26, 2006
Messages
190
I decided to set this motor up to run occasionally on the stand since the boat repair is taking forever. I tried to start it and it fired right off for and instant then quit and now wont start. I do have spark thats as far as I got.
Does the remote oil tank have a pump in it that should push oil to the motor res? I do not hear any pumps running at all with the key on. There is a schroeder(?) valve on an aluminum box on the motor that looks like a test point to me, is this possibly a fuel pressure test point? I have no pressure there at all sitting or while it is cranking. Thanks, Kevin
 

sbklf

Petty Officer 2nd Class
Joined
Oct 26, 2006
Messages
190
Re: 2000 Yamaha 200 HPDI fired once then nothing. Its been sitting a year

OK, I was able to free up the gummed up injector pump with some Formbys furniture refinisher and Gumout and get it running. I am now concerned that it is getting oil.
Is there a way to test if it is injecting as much oil as it should?
Can I mix oil in the fuel at the recomended rate to basically have twice as much oil as needed without messing anything up? (Injectors, anything else). I can deal with fouled plugs if that is all it will do to it.
I will run it weekly till I get it on the boat on the road and then take it by the local dealer.
 

rodbolt

Supreme Mariner
Joined
Sep 1, 2003
Messages
20,066
Re: 2000 Yamaha 200 HPDI fired once then nothing. Its been sitting a year

yamaha says not to premix oil on HPDI motors, however its possible.
as long as the engine oil tank is full gravity will feed the oil pump.
that schrader valve is the medium pressure test point, should read 50 PSI at key on and with the engine running.
 
Top