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Turbo Missfire With Higher Temps
My new EFI Turbo runs great when it's cool, but the hotter it gets it miss-fires or stumbles. This seems to happen when boost is starting to come on. This happens under heavy or light acceleration. Any ideas?
3.2EFI Manifold, Haltech, MSD, Stock Dist. Locked.
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15 Cayman 93 Amethyst 964 Cab & 67 21 window VW Wife's 64 356 69 912 targa 68 911L Hot Rod |
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10-24-2005, 01:44 PM
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Automotive Monomaniac
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What octane gas are you using? What boost level?
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2018 - Porsche 911 Carrera 7MT / 2018 - Porsche Macan 7DCT / 1993 - Cadillac Allante / 2023 - RAM TRX (on order) |
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10-24-2005, 03:05 PM
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.4 Bar Boost and 91 Octane fuel. Only when engine temp increases does it miss-fire.
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15 Cayman 93 Amethyst 964 Cab & 67 21 window VW Wife's 64 356 69 912 targa 68 911L Hot Rod |
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10-24-2005, 03:34 PM
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Registered
Join Date: Dec 2001
Location: MA USA
Posts: 2,938
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It could be a bunch of things. It could be an ignition miss. Bad plugs, bad wires. A bad coil. Do you have an air/fuel meter? Is it detonating when it misses? Could it be lean? Or way too rich? Does smoke come out when it misses?
Dean
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Dean 911 SC turbo, 3.0L 930 motor, G50, 930 brakes, DTA EFI, 352 RWHP DynoDynamic dyno, |
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10-24-2005, 04:16 PM
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The plugs are new BR8ES NGK gapped to .025. I will pick up new W3CS Bosch tuesday and gap to .35approx. Wires are new Clewett, Coil and MSD 6al New, I think it stays rich. The o2 meter reads 800-900 MV. It still only misses when it's warm.
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15 Cayman 93 Amethyst 964 Cab & 67 21 window VW Wife's 64 356 69 912 targa 68 911L Hot Rod |
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10-24-2005, 05:54 PM
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