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The mkiv Supra Owners Club

Supra NA wont rev passed certain rpms


Guest Joe marcon

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Guest Joe marcon

Popping green flames and the cat was glowing red? Had enough with the car misfiring today its just got worse . Doesnt have any power just splutters and pops at 4k revs :S

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Could the cat have broken down/be partial blocked? I'm not saying this is the underlying cause but could be why it won't rev?

 

 

I have never seen the metal substrate honeycomb break down in a MKIV cat,. very unlikely. What I have seen several times is an aftermarket back box break up internally and the wadding or perforated tube block most of the exhaust flow. A torch and a stick up it's backside may be educational.

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Guest Joe marcon

Right my friend had a look and the dizzy was set well off . Thats sorted now . Still slow tho there is no exhaust note so in guessing something is blocked as its still holding back, it has a blitz nur spec cat back . There was ash coming out when it was flaming, yes I'meeting Allan on friday if I'm not working . The car does need a service. And brakes :( . Needs a fuel filter too

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Guest Joe marcon

Yeh the car will be on axle stands when you get here . I'm in the process of taking manifold off and exhaust off. Yeah I'm free tommorow al. So come when ever your free, taking wheels off when i get a right size Allen key bolt then take the calipers and brakes off

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