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Old 02-23-2009, 04:09 PM   #1
jrob
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my radiator cap is leaking.

it only leaks when it gets hot enough to enter the blow off. im thinking that the upper o-ring is not sealing around the fill spout (fill spout is very slightly warped from impact) so when it gets hot enough to overcome the first seal its taking the path of least resistance out of the cap and all over the side of my bike instead of into the reservoir like it should. i think if i get another o ring and put in there it will add pressure when the cap is tightened creating a better seal. whatcha think? home depot? auto zone? bad idea?

preciate it!
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Old 02-23-2009, 04:32 PM   #2
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Old 02-23-2009, 09:29 PM   #3
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Just replace entire cap.
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Old 02-23-2009, 09:43 PM   #4
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Quote:
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Just replace entire cap.
1+ How much could it be?
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Old 02-23-2009, 11:51 PM   #5
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A guy I worked with in the past had the same problem.He laid the bike down lightly on the right side. After the wreck he was over heating. He didnt know about bikes and was just letting it sit. It was an 07 GSXr and he didnt have ins. I figured out it was the seal not allowing pressure to build thus causing a boil over. His cap was fine. The neck on the radiator was bent. He had no $ and was looking for a cheap fix. I figured the al was softer than the cap, so I put it on with channel locks. It straightened the neck and sealed. He just cant take the cap off till he is ready to buy a new radiator.
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Old 02-24-2009, 11:48 AM   #6
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Quote:
Originally Posted by bluewave18 View Post
A guy I worked with in the past had the same problem.He laid the bike down lightly on the right side. After the wreck he was over heating. He didnt know about bikes and was just letting it sit. It was an 07 GSXr and he didnt have ins. I figured out it was the seal not allowing pressure to build thus causing a boil over. His cap was fine. The neck on the radiator was bent. He had no $ and was looking for a cheap fix. I figured the al was softer than the cap, so I put it on with channel locks. It straightened the neck and sealed. He just cant take the cap off till he is ready to buy a new radiator.
interesting...thanks. i was figuring on replacing the cap but i didnt really think about the fact that the neck being bent might be causing a bigger problem. gonna try a cap first. i think those are cheaper than radiators
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Old 02-24-2009, 11:50 AM   #7
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His neck didnt look bent, but the cap wasnt for sure. I inspected the out of the cap.
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Old 02-24-2009, 11:51 AM   #8
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i had a radiator neck get a small chip in the plastic where the rubber seat sits... it was hard to nitice and i didn't notice it until after i had bought another cap. that could also be an issue to look at
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