really sounds like the head m8 id check everythings tight first round the coolant connections then try tourqing the head a bit tighter bout 19lbs of pressure i think its spost to be if that didnt solve it then id look at that head gasket
-- Edited by tripr on Wednesday 14th of March 2012 11:53:27 PM
Got a problem with my bike that I cannot get rid of. Rebuilt the top end a while ago started riding it and ever since it's been overheating. Strange thing is it was fine the first time I took it out until later in the day when it started playing up. Since then the temperature just keeps shooting up, tried getting any air locks out, made sure it's got enough coolant etc not making any difference though. Even checked to make sure the water pump was ok and that was fine as well. And don't think it's the head gasket, coolant seems clear. Also checked the thermostat, rode it without it, still the same. Weird thing is it was fine when I ran it up to temperature in the garden earlier and it was fine, rode for about 15 mins, stayed the same, only after about 45 mins it started really playing up and I couldn't get the temp back down. Any ideas?
have you tried a different rad? some can get clogged up over time, tried a temp sensor? r u sure its over heating or its just the guage thats playin up getting wrong reading off the sender
sounds like a blockage dont it are you sure the heads not leaking a bit is it poppin the lid off the coolant tank or leaving water on your swingarm or is it boiling its coolant away at all. have a look for the water movement (good) or bubbles (Bad) in the top of the rad when the engines runnning, dont get em confused with vibrations tho did you use a white top gaskets or a black one m8
i know its a stupid one but iv done it myself is the return pipe outta the head done up tight
I thought maybe a blockage but if you pour water through the rad it comes straight out through the other side. There were bubbles but it seemed to be coming from the hole that goes to the expansion bottle, have to have another look at that tomorrow. Reason I didn't think it was head gasket is because when I had the bike a couple of years ago the HG went and you could see the water bubbling in the coolant bottle, which I couldn't see earlier. Lid's not popping off either. Seem to remember the gaskets being black, not 100% though. Thinking about it though my mate said he could see coolant coming from near the stand though. Also the temperature goes down if you take the cap off, don't know if that means anything?
Tightened the head bolts up a bit, think that may have been the problem. Was fine earlier and also when I took the coolant cap off it didn't shoot water out everywhere so wasn't under loads of pressure. Did start getting a bit warm on the way back, think it may be the head leaking just a bit maybe? It's like it's building up too much pressure in the system for some reason...
Sounds like the head mate, mine broke down 2weeks ago, overheating coolant splashing out all over the swinger, took the head off and you could tell its blowing. Skimmed it, new gasket jobs a goodon
Hmm still doing it, it's only overheating when it loses enough coolant though, if it was head gasket then wouldn't it overheat straight away? Went through a 2L bottle of water and had to fill it up again lol. Did find where it's coming from though, coming straight out the coolant resevoir overflow near the stand, so not sure what to try next really.
You shouldn't be losing ANY water mate. You HAVE to put GENUINE head gaskets on those bikes. If it keeps overheating (which it has) then you will warp the head and it will needto be skimmed. Genuine head gasket is well cheap. I payed a tenner for mine.
have you got another head to try mate? cylinder face could also be warped, specially with you having it over heating !
find a lacal machine shops to take the barrel and the head to
take the studs out probly need blowtortch and 2 nuts on them to lock nut on to take em out then have them skim both the barrel and the head, use new gasket shunt charge u more than 20 quid, of if you no some one with a laith they could do it for you may need an expandable chuck for the barrel tho
Hmm it shouldn't be warped, I've never let it go into the red anyway. And don't have a spare head but could go and get one from the breakers if I needed, think mine's the more restricted one anyway. But if it is the head gasket would it actually leak water?
I use gasket sealent with them cheap white crappy gaskets, every time i use dry it does 200 miles then blows
If you have water under the bike or on swingarm / stand then the gasket is blowing pressure into the cooling system and this only happens when the engine is at running temp as the void will get bigger
Use a yammy headgasket is the proper way to get around this about 15.00
Has the water pump seal gone? if so your gear oil will be milky? and in bad cases will leak milky fluid out of the tranny breather all over the floor
Check thermostat, a pig to get out with engine / head in bike, have a new gasket for the stat housing
Is the water pump working? pull the waterpump housing and see if you can turn the pump by hand if so then its not working as you shouldnt be able to turn it
Check / flush raidator and check the cap
Last if you have rebuilt the engine have you put the headgasket up the right way? and also the basegasket
Just a few things to check if you have a overheating issue
-- Edited by stroker on Thursday 29th of March 2012 09:50:50 PM
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I GO TO WORK I FIX BIKES, I GO HOME I WORK ON BIKES, I GO TO SLEEP I DREAM BIKES! HEELLLPPPP :)
But even then right that is still technical. I mean it isn't but it could if you don't have a drill. I used a mirror and the finest wet and dry I could find! Circular motion and then DONE
Thanks for all the replys, I'll get a new head gasket then and see if it sorts it. One other thing, if the base gasket wasn't sealing properly, could it have the same effect if the crankcase is under pressure as well?
Snap had the exact same problem using a ****ty white tinny gasket was fine for a whille but then it jumped into super heat after 1 trek water all over my swing arm and managed to lose my rubber also. Een losing fluid keep losing fluid and needing to re top.
I was panicing when I first over heat it I was low on fluid so bunged in some water from a near by river now I've got silt and all kinds of **** in my rad ( had to get home some how haha)
Nvm got a 3mb head now so I'm defo gonna be using a black gasket this time round ^_^
