Question about 1991 Toyota MR2

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Blowen head gasket

Hi, i recently bought a mk2 mr2 turbo and decided to get it serviced just to be on the safe side. It came back to me three weeks later with nothing done to it, the man said it was a bit out of his league and he had not got time to work on it, all though he said it had a blown head gasket. So I done some checks. I checked the oil cap for a white mayonnaise substance, which was not there, i checked the heaters to see if they where working they are, i checked the oil dipstick to see if the oil was a gray color it wasn't. When a friend of mine drive it up to him he said the water was bubbling and pointed this out to this man. Does it sound like i might have a blown head gasket. Please help.

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  • dswong8770 Jan 17, 2009

    proper bleeding procedure for 91 mr2 turbo. people tell me drif. ways to bleed please help

  • tony yeatman
    tony yeatman May 11, 2010

    It sounds like a number of things that it could be.What test,specificly,was carried out to say it was a head gasket?

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If you had a blown head gasket, you would have HUGE amounts of white clouds of smoke coming out of the tailpipe. Your engine would be overheating/temp gauge reading high. Since you have not described either of these two things, I would hesitate to pronounce your veh with a head gasket problem.
Now, the bubbling that you speak of: MR2s are notorious for "air pockets" in the cooling system, as the engine & the radiator have a significent distance from each other. This can cause the bubbling sound. Knowing this, Toyota had the wherewithall to provide a cooling system air bleed proceedure when it was built. Open the front hood, and remove the spare tire. You should see a plastic tube coiled against the firewall. This ius for bleeding the air from the cooling pipes under the car. If you do not have the owner's manual that describes the coolant bleed proceedure, I will e-mail you a copy.
I would look at this long before I ripped the head off for no reason.

Posted on Oct 18, 2008

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Also undo the header tank cap,start the engine..if the water shoots back out of the header tank there is a good chance either the filler cap for the coolant is duff or you could have a blown gasget.

Posted on Mar 08, 2009

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There is a test called a TK head test Reasonably cheap and extremely accurate.In combination with taking out each spark plug and checking that none of them have any sign of water on them.Might as well do compression test to determine if the engine cylinders are consistant and have the same amount of compression,plugs are out so why not. Write down the numbers of each cylinders compression on a piece of paper,do with throttle wide open,you now have a good idea of the health of your engineIf it turns out that these tests show that there is no problem with the cylinders then move to the water system.

Posted on Oct 18, 2008

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