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The mkiv Supra Owners Club

I've blown my car up


Jake

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Been there, got the T-shirt.

 

Funilly enough, sometimes you might find out that there was nothing wrong --- yes, miracles do happen and the batman-style smoke clouds could be from gulps of oil that the breather spat in the intake tract (are you feeling lucky Jake?)

 

Speculating without first doing a compression test is a bit premature though. Even then, oil remaining in the cylinders could give funny results, so you might want to do a leakdown to get a better idea --- the supra TT head being such a biatch to take off.

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Feel for you mate,

After 2 rebuilds i have been there.

Mine blew 4 spark plug electrodes the first time and was still running

although not sweetly, but not badly either, also with the turbine from number 1 turbo completely missing and number 4 piston with the side out, it still drove 15 miles home though - unbelievable.

Get the plugs out and if any missing electrodes then worry, they have gone thru engine valves etc.

Comp test / leak test cylinders, if indicative of leaking, can be piston, rings, gasket, warped head, even block, i had all on mine, the block is virtually unheard of but anyone with an engine blow should get both head and block checked if they stripping down.

Hope for you it is nothing as sinister as all the aforementioned but just throwing a few things yr way if it progresses with bad news, mine got built the first time and then found with new 1.6 mm hks gasket it was leaking due to block warped, however mine could have been like this from japan we think.

Think Chris Wilson has the right diagnosis actually - unfortunately.

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Guest Terry S

Jake, Mig has my comp tester or I'd pop down tomorrow and do it for you. When the car went flat did the exhuast note quieten? Maybe worth getting one locally for piece of mind. The VVTi does seem to offer more protection in our experience but nothing is fool proof.

 

Jeff on yours, are you sure the FBW is shutting the throttle at the turbo transition point?

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Gutted - sorry to hear about this Jake.

 

My bird said she saw a white Supra just before the Fareham turn off last night around 9pm, said the bonnet was up but the police car was a normal one (not unmarked). If it was you, she said you didn't look happy!

 

She said there was no smoke, so I guess it was long after you pulled over. I was down there that way myself a little before that. Suprised I wasn't the one on the side of the road with the speed I was going against that Skyline!

 

Hope it turns out reasonably cheap mate.

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My bird said she saw a white Supra just before the Fareham turn off last night around 9pm, said the bonnet was up but the police car was a normal one (not unmarked).

I cut the full story down as it would have made a massive first post to the thread and nobody would have read it.

Yeah that was me. The car broke down about 8.30pm the unmarked car called a regular marked X5 to escort me off the motorway but she was making too much smoke to do that and it might have done even more damage to the engine. After the cops had breath tested me (passed for alcohol, failed for halitosis) they called Green Flag and ordered me a recovery truck.

she said you didn't look happy!
No shit! :D

Hope it turns out reasonably cheap mate.
It won't. Thanks though.
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it's some thing to do with boost ... the misfiring and spluttering you mensioned is a sign of over boosting .... and when you pushed it a bit harder you detonate it
Hi Ali, I don't think it was over boosting, the Peak Hold on my boost controller is showing 1.18 bar. Also the boost controller makes a warning noise if it goes above 1.2 bar.

 

Jake, Mig has my comp tester or I'd pop down tomorrow and do it for you.

When the car went flat did the exhuast note quieten?

Maybe worth getting one locally for piece of mind.

Thanks Terry, I think I'll invest in a comp tester, another few quid isn't going to make any difference to the budget of my 'new project'

I didn't notice the exhaust quieten when the engine was running rough, it seemed like it was popping/backfiring slightly. I backed off as soon as that happened (apart from when I didn't and she blew up)

 

Think Chris Wilson has the right diagnosis actually - unfortunately.
At this point I'm hoping it's either turbo failure or the head gasket. I really don't fancy a full bottom and top end failure, especially if it's taken the turbos with it.
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Forgot to say in my last post...

 

Does anyone know if there's a regulatory body for petrol stations?

 

Maybe you could get the fuel tested down there, might be worth a shot if there's a slight niggle that it might have been the fuel - just to put your mind at rest.

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...and for anyone thinking that a KnockLink would have saved him (IF it was because of dodgy fuel quality), my last blowup was right after I had filled it at Tesco (cheapskate, tried to use the 5p/lt voucher) and it went pop at only 1 bar without the KnockLink blinking an eye.

It was well adjusted too.

Booga.

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