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Thread: 2009 yamaha vx cruiser overheat warning
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02-19-2013,07:55 PM #1
PWCToday Newbie
2009 yamaha vx cruiser overheat warning
1. My 09 VX cruiser overheat warning came on after 40 minutes and went into limp home mode.
Left if for 10 minutes and everything back to normal.
Took it out the following week and the same thing happened after about 40 minutes, pressing the mode button gave an indication of 01 (normal) not 15 as I would have expected.
Dealer says may be the block or head is full of sand and estimates about $2500 to fix. The ski has 42 hours and have owned it from new, it is used in salt water but flushed after every use for at least 10 minutes.
Anybody got any ideas on what to do, I have flushed with salt remover, checked all the hoses for sand and found nothing.Water from the port side pilot is reasonable.
Have checked the eng temp sensor
50.5 kohms at 22.3degc 42.9kohms at 29.2 and 13k at60degc.
Would appreciate any help, I,m told a guy named "Frenchy" knows all there is to know about VX's but I am new to this site and not sure how to contact him.
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02-19-2013,09:39 PM #2
PWCToday Guru
Re: 2009 yamaha vx cruiser overheat warning
I just PMd Frency for you .
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02-19-2013,10:08 PM #3
PWCToday.com Is My Home Away From Home
Re: 2009 yamaha vx cruiser overheat warning
first to check is if the engine is really overheating or not.
there are 2 sensors, one on the block and one on the exhaust manifold, they should have both a pink and a white wire and a quick connection plug about 4/5 inches away from the sensor.
while running even at full speed you should be able to keep your hand on the exhaust or the block or for a few seconds, not crazy hot like boiling water.
the best way to check is with an infrared temperature gun, while the alarm is buzzing, check temp on block and exhaust manifold, i would say : no more that 140 / 150 degrees, i think the alarm goes off at 200 degrees, not sure i will check tomorrow.
what you can do also to know which one triggers the alarm is when the alarm buzz, disconnect one temp sensor, start again, and if still buzz, disconnect the other one.
there are two commons problems on these, first is like your dealer says : sand in the block, you ran in shallow water at low speed , the sand accumulate around cylinders and in the head and as the engine was hot, the sand turned into concrete and will never come off by flushing, in that case the head need to come off and scrape around cylinders with a screwdriver .it happens less if you go into shallow waters at high speed , the sand will pass thru without stopping.
it could be also a bad rubber boot between the exhaust manifold and the first exhaust pipe , # 16 on this diagram http://www.boats.net/parts/search/Ya...201/parts.html, you are throwing hot exhaust fumes in the water jacket making water temp raising .
good luck and let us know what you found.Last edited by cyrillefrenchy; 02-19-2013 at 10:17 PM.
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02-20-2013,03:48 AM #4
PWCToday Newbie
Re: 2009 yamaha vx cruiser overheat warning
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02-20-2013,03:52 AM #5
PWCToday Newbie
Re: 2009 yamaha vx cruiser overheat warning
Thanks for all the info, I will check the exhaust boot tomorrow and post results.
Probably can't get out on the water until next week due to the terrible conditions here on the Gold Coast of OZ at the moment all beaches are closed.
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02-21-2013,05:48 PM #6
PWCToday Newbie
Re: 2009 yamaha vx cruiser overheat warning
The rubber boot on the exhaust seems fine so it looks like sand in the block may be the issue.
I will water test next week and post results.
I am OK with taking the head off but unsure about how to do the timing, I assume the special tool is needed to rotate the cam sprockets and keep them in sync, are there any other tricks I need to know? If #1 is at tdc everything should be OK???? Any info would be appreciated. Thanks
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02-21-2013,09:57 PM #7
PWCToday.com Is My Home Away From Home
Re: 2009 yamaha vx cruiser overheat warning
taking the head off is not that easy on these skis , putting it back together the right way is even harder .i don't want to discurage you , you will find out by yourself , make sure you have good mechanical skills and a good service manual, and yes there are many tricks you need to know to do the right timing.
get a service manual, read it , get familiar with it and try, we will be here to guide you.
yes the #1 cylinder should be at tdc, the problem is there is no mark for it, you have to do it with a dial once the head is off and make your own mark on coupler.
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06-15-2013,02:59 AM #8
PWCToday Newbie
Re: 2009 yamaha vx cruiser overheat warning
Finally gotten around to removing the engine and taking the head off to find the galleries full of compacted sand (a common problem here in Oz).Originally Posted by cyrillefrenchy
taking the head off is not that easy on these skis , putting it back together the right way is even harder .i don't want to discurage you , you will find out by yourself , make sure you have good mechanical skills and a good service manual, and yes there are many tricks you need to know to do the right timing.
get a service manual, read it , get familiar with it and try, we will be here to guide you.
yes the #1 cylinder should be at tdc, the problem is there is no mark for it, you have to do it with a dial once the head is off and make your own mark on coupler.
I have cleaned it put it all back together but I am worried about the timing. With #1 on TDC using a dial indicator the dots on the cams lined up with the marks on the bearing housings. The motor turns freely without anything hitting so I assume I have got it right.
Can anyone out there confirm this???
Thanks
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06-16-2013,02:49 AM #9
PWCToday.com Is My Home Away From Home
Re: 2009 yamaha vx cruiser overheat warning
Yes on all what you said, once chain installed, make 2 turns with the crankshaft and verify again.
Bring the piston #1 at tdc , don't go backward , if you went too far do another 2 turns and verify your camshafts position. Take your time for that operation,this is the most important.
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06-16-2013,07:23 AM #10
PWCToday Newbie
Re: 2009 yamaha vx cruiser overheat warning
Thanks frenchy, did all that and made sure the cams were pointing away from each other to verify that it was on the compression stroke i.e inlet and exhaust valves were closed. Checked it another 4 times just to make sure. Thanks again for all your help, I will put the motor back in on tuesday and hopefully post results on wednesday. Cheers Mal, never too old to ride, I'm only 63.
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