<!-- s:shock: --><img src="{SMILIES_PATH}/icon_eek.gif" alt=":shock:" title="Shocked" /><!-- s:shock: --> As the topic name suggests, I have oil in my coolant. I can't tell whether there is coolant in the oil from the little level window. Sooooo.... what could be wrong with the engine? For one, there is a great lack of power. And the engine sounds real sick with the miss firing. Also, the temperature gets pretty high, not to the redzone but close. (The airflow when going over 70km/h puts that temp needle back near halfway). <!-- s:cry: --><img src="{SMILIES_PATH}/icon_cry.gif" alt=":cry:" title="Crying or Very sad" /><!-- s:cry: -->
Getting oil in your coolant wouldn't affect the sound that your engine makes. Getting coolant in the oil will however. I wouldn't run it again until you find out what the problem is. If there isn't oil acting as a buffer between the bare metal parts in the engine then you'll be doing the engine a world of hurt each time you take it for a spin. Out of curiosity, what has happened recently that may have caused this? It's unlikely that a barrier between the coolant system and oil system would simply fail... unless there was somekind of abnormal stress on the system (like a lowside ).
BLOWN HEAD GASKET!!! As stated, do no run the engine any more than you have to. If oil is going one way, it won't be long until water starts going the other.
The Dude is right. Classic symptoms. As I was reading through the list my gut was sinking out of sympathy for your plight. I know all too well the troubles caused by a blown head gasket, not with the fizzer though thank god. Hope you can get it sorted with out too much hassle. Just remember that riding the bike will make the problem worse and left to run its course will kill your engine.
Sure it can. As the cylinder builds pressure (compression stroke), the gasket being faulty, will allow a portion of that pressure to escape before the exhaust valve opens. Hence the lack of power from a cylinder not having full compression and a miss because the air/fuel/compression ratio is off.
I got a head gasket from the local Yamaha dealer here in Tas in about two days from ordering, grand total $30.. I still have not had mine off yet and its still sitting on the bench but the part No. is still on it if you want. Same gasket does 2KR 3LN QUESTION: Is it easy enough to get the head off without pulling the engine out????
I might have the same problem as the poor fellow above...I can't find any oil in the coolant and I'm not sure how to check for coolant in oil? Any ideas?? But my engine definetly sounds different and from my past experience with the cars...yup i think mine is gone as well. Anyhow could anyone please tell me the part number for the head gasket?? Anyone has done it before? approx. cost? Greatly apprciated
If dave is right about the head gasket being the same on the 2kr as the 3ln then you can find it as #12 on page 1 of the parts list that is found in this thread. <!-- l --><a class="postlink-local" href="http://www.fzr250.com/viewtopic.php?t=1376">viewtopic.php?t=1376</a><!-- l -->
One way would be to drain the oil. If it is just the head gasket gone, then all that needs to be done is to replace the head gasket... and machine the head if need be? I have repaired a car before with a blown head gasket, or more so, replaced the gasket and the head with new gasket set and a head from my car (switching cars for the hell of it really from auto to manual) then found out the piston rings were gone as well... the hard way. <!-- s:???: --><img src="{SMILIES_PATH}/icon_confused.gif" alt=":???:" title="Confused" /><!-- s:???: --> It's a pity I got rid of my first car otherwise I could have put the head back on that again. <!-- s:lol: --><img src="{SMILIES_PATH}/icon_lol.gif" alt=":lol:" title="Laughing" /><!-- s:lol: --> I should get those photos off my phone and post them up. Quite.... interesting I reckon <!-- s:shock: --><img src="{SMILIES_PATH}/icon_eek.gif" alt=":shock:" title="Shocked" /><!-- s:shock: --> <!-- s:roll: --><img src="{SMILIES_PATH}/icon_roll.gif" alt=":roll:" title="Rolling LoL" /><!-- s:roll: -->
That I couldn't answer as I don't know what kind of clearance you have. I'm going to say that it would be much easier with the engine out of the bike.
lol, fair enough, fluffy. I actually meant that if you literally opened up the radiator and poored oil in then it wouldn't cause the engine to run with a different sound. But you're quite right, the mechanical problem causing oil to get into the coolant (and the effects created from it) may very well change engine pitch.
Gasket part no 3LN 11181-00 and mine was $30. There would be very little other expense in changing the gasket other than some new corrosion inhibiter, getting a lend of a tension wrench and an oil change. If the head is warped or cracked then it starts getting expensive
looking at my 2kr with 3ln donk- i think i can pull the head off in frame but i am too lazy and my wife (grooan)_ wont let me anyway...
wow I have never heard of a blown hed gasket in any 4 cyl 250 except a very old and worn out Accros... this is very interesting... Aloso I have learned that Global wreckers in Dandenong (Melbourne) can (or they get some one else) recondition the top end!! (basicaly the head and the cylinders/pistons)... It is compleatly the opposite to what I whave always been told by other mechanics... the reason for this is lack of support from Yamaha and lack of spcifications...
Global wreckers do it?? Oh wow the guy there is a legend.. I'd rather them than the bennet street people, even though they are also quite friendly, they have much less knowledge on the FZR 250. I base this on the fact that the guy at global wreckers has made a go-kart out of the FZR 250 engine.. And he really seems to know his stuff.
Before you do that.. I'd really reccommend you check to make sure all of your cylinders are burning. Mine was running on 3 because the circlip on the 3rd carbies' needle had fallen off. Woohoo, 100% fuel in the valve, meaning it was draining down into the oil. Run your engine for 20 or so seconds.. so you can JUST touch the exhaust headers. See if they're all the same temperature. If one/some are colder, then you have fuel or air problems (carbies). Much easier to fix. Else you got a blown gasket. Bugger
still b/w all of us here we have the most knowlage on FZRs than any one else... what we lack is expiriance doing things like compleate engine rebuilds... but han I think I might have found some one (possibly the people Global use) that can do a copleate reco on a FZR engine... I'll spek to them in the near future... Worst case senario I'll get all the tools and the know how... and charge you guys pinuts... I mean an arm and a leg <!-- s --><img src="{SMILIES_PATH}/icon_biggrin.gif" alt="" title="Very Happy" /><!-- s -->
the fizzer rebuild is pretty simple just similar principals as all other motors. its just the cost of parts that makes it hard...
Before getting too carried away I would do a simple compression test. If you got a blown head gasket you'll find it that way. Trust me, it can be plenty of other things. I know of someone who paid $1880 on a head gasket and valve job only to find the problem was a waterpump shaft seal.
