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The mkiv Supra Owners Club

misfire and coolent leak, issue found and repaired


supraGZaerotop

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Ok, last night on way home the car was fine, did drive it hard tho. This morning, pulled out of garage to find this

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I checked lvls all seemed hood so i thought id use it as its my main transport, anyways i got about 3 miles and the car started sluttering, missing by the feels of it. Idle is low and up and down. Il couldint go above 40 due to this problem, car feels terrible. Hope its nothing major, but i anit holding my breath, leak on floor that seems to be coolant a major miss fire, not good me thinks, i just parked it up and took my missus car :-( any ideas?

Edited by supraGZaerotop (see edit history)
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hi, i did dip my finger in it and put it on my tongue, was bitter, my rad is full, but my expansion tank is down on the low, i topped it up the other day becuase i had a pipe leaky the other day at the bk by where you said but on top by back of cam cover!, clip was on a bit dodgy, i moved the clip up and thats ok now. id love it if it was just a bloody pipe. just gone out now quick, car starts perfect runs smooth no miss, i didint have time to leave it warm right up tho, got my baby daughter to look after. will have a good look on weekend, taking it up my mates garage, hes very good, jap cars are his speciality.

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oil cap is fine, had a good look, nothing but the black stuff. when ive been reading older threads about this sort of thing they say take rad cap out for bleeding in that it shoulding come out should it, but draw it in, or is that when the thermo is open. ive read about read pipes bursting and spilling coolent into plug valley!

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Isn't that EXACTLY what I said? ;)

Yip you were right lol, thank god. Bloody pig of a job tho, for me anyway. Right between the engine and bulk head, i couldint get pipe off, i had to go to halfords to buy one of them plyers thats got a bend init so i could get at the clip and even then i had to take off the turbo to inlet pipe that runs behind. Always get a bit well you know with doing certain jobs on these now because certain bits and bobs are quite frail and easy to damage something else in the process .

 

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Nice new pipe

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there was a small split in the rubber hose right along the bottom clip, seems as tho the clip over time maybe cut into it, not sure, but the only way you will see it leaking is with plug cover off and engine running, if its leaking you will see it plain as day, well you can see in the video i posted. these cars are getting on now, il probably be replacing hoses for the next couple years on and off now i expect, ive already replaced rad hose, (oem toyota), vac lines (apart from the really awkward ones behind engine, this coolent hose now, ive got a replacment intercooler to go on off a low mileage car, il love to do others bits and bobs but its suprising how much toyota want for some of the bigger pipes under the bottom.

Did now the "coolant line" had a crack or the Plug who goes down the cylinder head?

Maybe mine had the same issue, but not that big...

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