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Post by 137d on Jul 1, 2013 22:12:34 GMT 1
Out on a run around 100 miles tonight and the cap blew off the expansion bottle a couple of times.
I also noticed the coolant level is now higher.
Question is: is that more than likely a head gasket failure?
Thanks in advance.
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Post by Yogi on Jul 1, 2013 22:46:02 GMT 1
Sounds like it to me ,something's pressurising the water system,,,maybe check the water pump impeller and thermostat is ok before removing the head, also check the hoses to and from the the expansion tank, maybe a blockage or kink??
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Post by marsbar350 on Jul 1, 2013 22:53:00 GMT 1
same symptons i had a couple of months ago.it was the head hasket  |
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Post by cb250g5 on Jul 1, 2013 23:23:46 GMT 1
I had similar. re torqued the head, all fine now.
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phil38
Thrash Merchant
Posts: 426
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Post by phil38 on Jul 2, 2013 12:35:28 GMT 1
Had the same on mine in its maiden voyage. I hadn't touched the engine but had done lots of other stuff. Mine was overheating and spitting coolant out of the pressure cap on the rad and the expansion tank cap was blown-off. It was the head gasket, of rather the heat gasket not sealing because some previous owner had snapped of a head stud and stuck the barrel-nut in with silicon.....
How I laughed!
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Post by tobster on Jul 2, 2013 17:44:30 GMT 1
Deffo head gasket. You may get away with retweaking the head nuts or failing that, whip the head off and smear silicone on the old gasket and reuse it. It has worked for me. Actually yu're committed to taking off the head, now is an excelletn time to measure the squish (assuming you haven't already done this....), then you can split the headgasket to get a better squish value.
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Post by copper99 on Jul 3, 2013 20:23:49 GMT 1
Had the same on mine in its maiden voyage. I hadn't touched the engine but had done lots of other stuff. Mine was overheating and spitting coolant out of the pressure cap on the rad and the expansion tank cap was blown-off. It was the head gasket, of rather the heat gasket not sealing because some previous owner had snapped of a head stud and stuck the barrel-nut in with silicon..... How I laughed! That is just taking the piss isnt it ! Unreal... |
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Post by 137d on Jul 3, 2013 23:53:08 GMT 1
Thanks everyone for the replies.
Replaced the head gasket and all seems fine.
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