Question about 1987 Toyota Supra

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87 Supra idles rough and dies out

When I start the car it Idles rough then eventually dies out. But when in gear 1st - 5th it runs fine then when i stop, idle is rough again and rpm drops and cars dies out again but starts right back up. Also smells rich. Please advise...Thanx.

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  • Anonymous Mar 15, 2014

    car dies after starting start it again and it run fine

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I would suspect a vacuum leak. At idle under high vacuum the air fuel mix is being leaned out until you have misfiring so bad the engine quits. The exhaust smells rich because even a lean mixture, if it doesn't light off, if full of unburned fuel. At road speeds, the vacuum is low so the engine doesn't care if there is a small leak somewhere. It is getting most of its air through the open throttle. Check all your vacuum lines but remember that even if every line is okay, it could still be leaking from an old cracked intake manifold gasket.

Posted on Jan 28, 2009

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Check timing and set idle to 650rpm

Posted on Jan 21, 2009

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