03 cr250 fresh rebuild blowing coolant out of exhaust

SAINT1000
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Rochester, NY, USA
SAINT1000
I just finished complete rebuild, new crank, bearings,seals, piston. Got everything back together and got it started and it's is literally blowing coolant out of the exhaust, I don't understand what I could of.missed
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Paul_Pitzonka
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Paul_Pitzonka 7/12/2020 5:10pm
7/12/2020 5:10pm Edited Date/Time 7/12/2020 5:10pm
Warped/cracked head or cylinder... Damaged O-ring or warped cases where coolant passes between them. Was problem existent prior to rebuild?
kb228
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Mansfield, OH, USA
kb228 7/12/2020 5:44pm
7/12/2020 5:44pm
Likely a badly blown headgasket.
SAINT1000
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Rochester, NY, USA
SAINT1000 7/12/2020 6:55pm
7/12/2020 6:55pm
No, bike never had a coming problem
Matt Fisher 7/12/2020 8:55pm
7/12/2020 8:55pm
You probably pinched one of the head o-rings, likely got out of the groove during assembly.
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Factor E
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Factor E 7/12/2020 8:59pm
7/12/2020 8:59pm
Didn't suface head?

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