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The mkiv Supra Owners Club

sticking valve?


trinitom

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I had the same problem with my blue Supra. It was a little more severe as I had 4 sticking. It turned out the oil pump was worn and wasnt supplying the head with enough oil and the when the engine warmed the buckets were tightened inside the head jamming the valves. I dont want to to scare you at all but its something id look at.

remove the cam covers when the cars cold and check to see if the buckets are free and not stuck in at all. My guess is its gona be 1 of the valves at the back of the engine near the bulkhead. Either way though mate as Rob says the head has to come off. Fingers crossed not the engine out though.

 

Do you have an oil pressure gauge fitted if so what sort of pressure are you seeing.

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I had the same problem with my blue Supra. It was a little more severe as I had 4 sticking. It turned out the oil pump was worn and wasnt supplying the head with enough oil and the when the engine warmed the buckets were tightened inside the head jamming the valves. I dont want to to scare you at all but its something id look at.

remove the cam covers when the cars cold and check to see if the buckets are free and not stuck in at all. My guess is its gona be 1 of the valves at the back of the engine near the bulkhead. Either way though mate as Rob says the head has to come off. Fingers crossed not the engine out though.

 

Do you have an oil pressure gauge fitted if so what sort of pressure are you seeing.

 

i'm seeing around 115/120 psi, and the tapping sound comes from 5/6 piston side.

looks like i have to remove the cam cover and see! :rolleyes:

by the way the tapping it's very low and dificult to notice.

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I hope its ok for you mate. Fingers crossed.

 

I hope so too, but this is maybe coming from my head! :rolleyes:

the car runs very nice, pulls strong, i think this is just my imagination.

Anyway tomorrow I'm going to record and share with you guys and hope that everything is ok.

Thanks for the help people..

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