I have a 2008 Yamaha HPDI 250. Last couple of times at the lake I noticed the motor temp gauge will up quickly when I’m at idle, over 140. When I speed up a little bit the temp drops quickly and runs fine any suggestions?
I have a 2008 Yamaha HPDI 250. Last couple of times at the lake I noticed the motor temp gauge will up quickly when I’m at idle, over 140. When I speed up a little bit the temp drops quickly and runs fine any suggestions?
\"2008 Ranger Z520 250 Yamaha HPDI\"
Clean popit valve? PRV
Marks Props 317-398-9294, 1850 East 225 South, Shelbyville, Indiana 46176 propellerman59@gmail.com http://www.marksprops.com/index.html
Do you have a link to a video on how to do this? I don’t have great reception where I am so it’s hard to search. Thank youOriginally Posted by 21XDC
\"2008 Ranger Z520 250 Yamaha HPDI\"
Check the how to sticky at the top of the Yamaha page.
1998 Tr-21, 2001 Yamaha 225 OX66
Poppit valve is for high speed. It won't have enough pressure to push that spring until you build up some Rs. When was the last time you did a W/P.
That’s not exactly true. Debris in the poppit will allow it to stay open and bypass water at idle/lower rpm and cause overheat. It’s a fairly common issue.
201pro is right I’ve had it happen on one of my Series 2 years ago. Also water pump as well
2018 Bass Cat Caracal
Yamaha 225 SHO
Classic symptom of poppet valve not closing completely, usually due to debris or corrosion.
If not poppet, check water pump. The stainless steel plate under the impeller needs to be smooth with no grooves or gouges.
You Don't Know what you Don't Know until you Know.
1984 Champion 201/Yamaha 175
1986 Ranger 390v/Yamaha 200
2002 Viper Cobra Coosa 216/Mercury 225EFI
2002 ProSports ProKat 2200/Twin Yamaha 150HPDIs
Omg. Just had the same issue. Was tubing with the kids, sstopped at a beach, sucked somethin up in motor because i had an alarm go steady on me, and no pissin. (Was still idling, so not at speed.) Took it home, flushed motor out, and figured it was all good. Idled about a mile the next trip out (no wake zone), and overheated again. Im gonna try the poppet valve and check the thermostats. But at higher rpm i dont alarm out. Thanks guys. Hopin this cures it.
Could also be the tuner. The exhaust tuner is classic for overheat at idle speed and fine running down the lake
How does that happen? CJ
2002 X19 200HP OX66 HO Vmax,HPDI lower, it lives, thanks Hydro Tec.
Tuner burns pieces out of it. Hot exhaust hangs around longer and heats the water up. Was exactly what was wrong with my 2003 ox66. Apparently, it's fairly common
Is the OP looking for the most probable cause for his symptoms or is he looking for anything possible that can go wrong and cause his symptoms?
Changed poppet valve, thermostats and water pump on mine and that fixed it right up.
That makes sense. Seen HPDI's destroy tuners. Didn't know the OX's did. CJ
2002 X19 200HP OX66 HO Vmax,HPDI lower, it lives, thanks Hydro Tec.
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