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Old 01-02-2013, 04:57 PM   #1 (permalink)
crf450x
 
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running a bit to HOT

I just installed all new gaskets due to a coolant leak and now its getting hot and flickering the light while cruzing 30ish. if I peg it on she comes and stays on to the point it starts to lose power. I did burp it twice to make sure air is out, both exchangers are getting hot to touch water is flowing fast when remove rad cap. I did notice that when i looked under sled that both exchangers didnt really have snow on them so is the lack of snow causing my issue??? only spot that was covered seemed to be crossover in back. thanks for any suggestions!!!
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Old 01-02-2013, 08:22 PM   #2 (permalink)
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Have you tried ice scratchers? They work great on the ice or hardpacked trails. I see a drop of at least 20 degrees when I put mine down.
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Old 01-04-2013, 07:29 PM   #3 (permalink)
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So heres the deal. upon further review it seem I am blowing my coolant back out. While idleing it builds up pressure and starts over filling the coolant bottle as soon as bleed screw is closed,plus i am also seeing coolant out the exhaust. Just replaced head gaskets pretty sure all o rings where seated in fact sure of it used a bit a grease to hold em in they werent oem wisco i beleive. open for suggestions thanks
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Old 01-04-2013, 09:11 PM   #4 (permalink)
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Check your thermostat. You can easily test it by pulling it out, throwing it into a pot of hot water and check to see if it's opening.


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Old 01-05-2013, 01:43 AM   #5 (permalink)
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Bad base gasket or cracked head or cylinder wall.
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Old 01-05-2013, 06:28 AM   #6 (permalink)
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I replaced base gaskets when i did the head gaskets . Took thermostat out still acted the same. Never had overheating problem until gaskets change. Used Wisco gaskets not oem could this be it?? I am going ti pull it apart again hope i c something that could b problem. How noticeable will a crack head or jug b??
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Old 01-05-2013, 01:05 PM   #7 (permalink)
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A crack could be very noticeable, or almost impossible to see.

Since you are getting coolant in the pipe then it has to be coming from somewhere.

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Old 01-05-2013, 01:32 PM   #8 (permalink)
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From what I remember you have to use a oem base gasket otherwise the aftermarkets blow right out. That's there made from a different material.


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Old 01-05-2013, 03:26 PM   #9 (permalink)
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I was hoping maybe head gasket being cooling systems seems to be getting pressurized. Are there different ves jugs ?? The gasket set came with ves gaskets that where wrong for my engine by chance the o rings different?? I didnt mess with it today rode the Yami instead. Going to order oem gaskets and open it up hoping for the bestor atleast see what problems is. I read some where to use the base gaskets off a latemodel engine as they are steel reinforced??? thanks again guys
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Old 01-05-2013, 05:52 PM   #10 (permalink)
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Hey just thought id let u know my buddie had the same type of problem uve got going and as was said b4 it was a cracked head!

Hope thats not the case but it was with my buddies sled!
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Old 01-07-2013, 05:35 PM   #11 (permalink)
crf450x
 
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found the problem!! seems when the previous owner stripped the one head bolt he tapped it one size bigger which in turn damaged the surface between the bolt hole and inner o ring groove. When I pulled it apart the o ring was split at that area along with a piece of the cylinder chipped from bolt hole to o ring. My question is do you think him opening the hole up in cylinder and also the head will i need to replace the head and cover also?? Now to find a new jug for a decent price!!
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