I was wondering if anyone has any problem with a 250 staying cranked when it is cold. My 250 will fire right up but if you touch the gas without it being in gear it will just load up and die. If I put it in gear it will go alright. I am having it looked at in the morning. I checked the plugs and they look ok. I have a friend with a 250 and he said his does the same thing.
In neutral, The hpdi only fires on 4 cyl.... In gear it fires on all 6. It may be a tps adjustment, But I'm not sure. I would ask on the yamaha forum.
Marks Props 317-398-9294, 1850 East 225 South, Shelbyville, Indiana 46176 propellerman59@gmail.com http://www.marksprops.com/index.html
There is a guy in my area that has a 250 HPDI on a Z21 that had a similar problem although his would not stay running at all ; that turned out to be a faulty sqeeze ball check valve. -- mike
Depends on what you mean by 'touch the gas'. If you're mashing it down to try and rev it up, it will do this. As was said, the HPDI only fires on four cylinders in neutral. I could ease down on the throttle of my 250 and it would spit and sputter, but I knew what it was doing. I never tried to just press down and rev it up. No need to.
Jason Phillips
Outboards have forced induction water cooling via the nose cone when it is under way, i.e. your water pressure changes at differnt speeds and motor heights. When you are sitting still it gets minimal pressure from the water pump. When it is in neutral and on 4cyls it is a safeguard to not allow you to do something stupid like rev it up. Reving it up causes the motor to heat up and wear and tear beyond it's norm..... Thank Yamaha for this.
Preacher, like the other guts said it only fires on 4 cyl's until it gets warmed up then you'll be fine! next time you're out if your by yourself back it in get on the t/m and park the truck come back and you'll see what I'm talking about. Mine did the very same thing when it get's warm it will idle down and when you engage forward then you've got all 6 cyl's.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Porkfrog »</TD></TR><TR><TD CLASS="quote">Preacher, like the other guts said it only fires on 4 cyl's until it gets warmed up then you'll be fine! </TD></TR></TABLE>
Cold or Warm.....When in neutral the HPDI will always fire in 4-cyl mode.
Jason Phillips
Your just going to have to live with it.nothing the Dealer can do. my Tech said when your start it just pop it in gear, that's the YAMI fix.
Fear-This
2000 202 pro v / 04 250 Hpdi 27 T1 Work
15" Rapid jack 1 1/2 inch below Pad
Tourney Loaded Wot 80.6 gps
Light 83.9 gps
Danny, you have to let the Yammie warm up. Yamaha recommends that you let the idle for 3 mins. to warm up.
I took the 250 to Grammer Marine and they laid hands on it. He adjusted the throttle linkage. It was off so the motor idled a little slow. I took it to the river yesterday and it seems to be doing Great. The computer flag-ed it when he turned the key on. The factory people said that they can move during brake in. The motor ran strong yesterday. "Ain't God Good"
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