oil in my water= very unhappy me.

[brockzila]

I was all excited this morn. i had a lisence, the bike was insured. the plan was to collect my bluespots from the post office, fit my freshly charged battery, start it up, give it a final going over and off to geta MOT. i had to push start it as it was only the second time i had started it since i had replaced the head. it started easly but was quite rattley and one of the hoses was leaking. the rattle died down after a bit, but is was still there.

I then opened the rad and found what no one wants to see oil. i refilled it hoping there may have just been a bit of oil in the water gallaries after i did the head job. but the more it ran the more oil there was.

now
i drained the oil and there is no sign of water in the oil.
i used a new head gasket, had the head plained, torqued the head to the correct settings using the correct pattern

im a bit stumped as to what it is. i did not touch the water pump so so it is hopefully not that.

the only thing i can think of is to pull the head and plain the barrels as well and refit a new headgasket. im not to happy about doing this again but i cant se another way out of it.

What else can it be. i dont want to pull it apart again.

what else can it be????????

[youngy]

it could be the mechanical seal in the water pump.

did you replace the base gasket and cylinder base o-rings?

is the cylinder head coolant pipe fitted properly with an o-ring? is the valve cover seal fitted correctly?

have you had the head on a surface plate and checked it is flat to within spec?

[brockzila]

did you replace the base gasket and cylinder base o-rings?

no but i was very carefull not to pull the barrels off the case and break the seal the gaket had. would have been a smart thing to do though.

is the cylinder head coolant pipe fitted properly with an o-ring? is the valve cover seal fitted correctly?

yes and yes. i was thinking that if it was ether of these then there would also bee some signs of water in the oil.

have you had the head on a surface plate and checked it is flat to within spec?quote]

it was taken care of by a cylinder head specialst. some things i a;ways get the pros to do and that is one of them.

it could be the mechanical seal in the water pump.

how hard is this to check. i would prefur to check this befor i pulled the head back off. I had a suzuki that this happened to and there was very ovous signs of oil and water in the cooling and in the oil systems. as far as i can tell i havee no water in the oil so i kind of ruled this out.

[youngy]

you want all the good news?

you cannot buy the seal separately. a seal from a YZF750 pump might fit, but it might not.

you cannot check the seal without removing the pump.

if you try to remove the pump be very careful. There is a shim on the pump shaft that rides against the drive gear. this shim is very unlikely to come out with the pump - it normally sticks to the gear then falls into the crankcase.

there is a seal behind the bearing, which is all inboard. it may be this seal, but on the YZF750 pump there is another mechanical seal as well.

If it's any help I do have a pump kicking around.

[brockzila]

dam.
i will have a look at it tomorrow. but it was running sweet befor i pulled it down as it started as a valve clearence job that blew out to a full strip.

so i dont think its going to be that.

will pull the rocker cover off tomorrow and have a look under there and recheck the valves tomorrow anyway as i need to figure out the rattle.


my monotor just blew and i can only see the white bits. what else can go wrong today!!!!!!!!!!!!