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steam_biker

Joined:

Apr 07

Posts: 34

steam_biker says:

yamaha yzf750r using water

My 1993 YZF750R is using a lot of water. She runs very well but has oily residue in the water and the oil window is milky. I suspect the head gasket but noticed a water pump seal for sale. I'm clutching at straws as a head gasket is a big job!Any ideas?

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  • Posted 3 years ago (09 June 2012 18:25)

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jaffa90

Joined:

Mar 09

Posts: 8925

jaffa90 says:

coolant loss

Do you know where is the coolant is going ?

Is it being forced out of the system or is your oil level going up?

A compression test may detect a faulty seal as well as the spark plug condition.

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steam_biker

Joined:

Apr 07

Posts: 34

steam_biker says:

YZF750R coolant loss

It seems to get forced out of the expansion tank overflow. I can't see the oil level since the sight glass is so milky!

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jaffa90

Joined:

Mar 09

Posts: 8925

jaffa90 says:

emulsion

I think you know what`s going on.

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kcmc

Joined:

Jan 08

Posts: 7527

kcmc says:

......................................................

I think your right Jaffa90

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smidget

Joined:

Nov 07

Posts: 2422

smidget says:

The

fact that the coolant is being forced out via the expansion tank indicate that the problem is the head gasket.

To get the same result from a failed water pump seal you will have had to of added a substantial amount of coolant.

You could do the oil seal / water pump seal but you will probably end up wasting time, oil, coolant, and finally money.

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oscarthegrouch

Joined:

Oct 05

Posts: 3151

Take it to

A garage and get it sniff tested then you will know ...sniff tester has a liquid in it and changes colour if head gasket has gone  

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oscarthegrouch

Joined:

Oct 05

Posts: 3151

Oh and i might have

a spare water pump here off my old fzr engine .... bet they are identical

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steam_biker

Joined:

Apr 07

Posts: 34

steam_biker says:

YZF750R coolant loss

Thanks for all the help lads, I think this bike will go in my restoration queue! I have two FZR 600 and a 1000 in my queue already! And a GS500!:smile

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oscarthegrouch

Joined:

Oct 05

Posts: 3151

i have

loads of fzr bits mate ....just giz a shout if you need owt

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