Cant figure out whats going on with my friends SN 650 with a coffmans pipe. We took it out for the first time and he rode it for a good 15-30min before it started acting up. It would just keep dying on him, my guess is the head temp sensor was shutting him down because it was getting too hot. I dont see anything wrong, I took all the hoses off and they are all clear flowing. I noticed in the pump the hole is really small literally (__) that big like someone drilled a hole and elongated it im thinking it should be atleast double that size? The hole looks like it would be for a fuel hose not a cooling line...
650/X-2 SN overheating?
- Thread starter NorCalSJ
- Start date
btmboards
Brett
- Location
- Oceanside, Ca
the holes really arent very big as is, when the ski shuts down, is the head real hot? could have a bad temp switch. is there lost of water coming out the pisser and is there any steam coming out the pisser
whats the pisser do flow-wise when riding?
Is the ski tuned right? i.e. Sure it's not overheating from lean condition and squeeking a piston?
Have you tried backflushing? Might not be in the hoses but a fitting or internal. The pump hole should be the size of a pen or a little larger, say 3/8ths.
Is the ski tuned right? i.e. Sure it's not overheating from lean condition and squeeking a piston?
Have you tried backflushing? Might not be in the hoses but a fitting or internal. The pump hole should be the size of a pen or a little larger, say 3/8ths.
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btmboards
Brett
- Location
- Oceanside, Ca
compression is a bit on the low side, I would probobly richen the mixture up just a bit if you are going to run it the way it is, I would also sudgest taken the head off and taking a look around and replacing head gasket. I do that on every new motor I buy. take the water line off that come from you pump. blow in it through your motor and see how easy air moves through, should be pretty easy, if not you have a clog, ive had this same issue on a buddies ski at the end of last season.
- Location
- Orange County, CA
i had a bad issue with over heating in the past, turned out to be a bad head gasket, a water port fried and compression was pushing water back reverse through the cooling system.
get a new gasket, and pull the head would be my $0.02
get a new gasket, and pull the head would be my $0.02
- Location
- Orange County, CA
best bet is head to bottom fitting of head pipe, top of head pipe to singer with a "T" to a pisser"
when running are you getting good flow out the pisser?
when running are you getting good flow out the pisser?
No its kinda weak.
I dont think so I dont understand it there's 3 hoses going into the top of the headpipe, there isnt one on the bottom. Im guessing the extra one is because they didnt use a T?
On my ski my B-pipe doesnt have so many cooling lines so im confused mine is pump to manifold bottom of headpipe to my head and top of headpipe with a T to the stinger/pisser. There is no bottom fitting on the coffman and theres an extra fitting on top...
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Byeai
"Cheetos-Man"
- Location
- Melbourne FL
Pictures plz I have my b pipe setup the same as u just described
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Byeai
"Cheetos-Man"
- Location
- Melbourne FL
Is the head and pipe actually hot wen u run it
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![coffman[1].jpg](https://www.x-h2o.com/data/attachments/104/104825-8a2b37ce607e4d91a21868d023c929d9.jpg "coffman[1].jpg")
Proper routing for Coffman Sizzler. X2 on the head gasketYeah its getting really hot, heres couple pics... should the head go to the back of headpipe instead of front-side of headpipe?
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Thats how it is setup, I bought a new head gasket, the old one didnt look bad though so im not sure we will see I guess.
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Byeai
"Cheetos-Man"
- Location
- Melbourne FL
Did u blow out all hoses or the hose that goes from pump area to the inside of hull or try back flushing from pisser
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Is the head pipe clogged? I'd take it all apart and blow it out to check for blockage.
Byeai
"Cheetos-Man"
- Location
- Melbourne FL
Was there any sand in cooling channels wen u popped head of is the head pipe clogged with sand flush head pipe if possible hook flush kit to fitting on head pipe disconect other line to head pipe amd see if u see a week stream outta that idk lol just ideas
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So what was the problem?