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#147 of 2096
Join Date: Jul 2002
Location: Puerto Rico
Posts: 1,701
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Difficult to diagnose misfire
Hi,
1995 Carrera 2 993 about 50k miles Drives very good (lots of power, good torque) but after 5k rpm starts to misfire with backfires on the exhaust. vehicle belongs to a friend, he already have replaced sparks, coils, injectors, caps and rotors, fuel pump, fuel filter, fuel tank filter, confirmed fuel pressure during a road test, ignition wires, road test with another ECU, fuel pressure regulator. Exhaust system is modified. He claims condition commenced after vehicle spent some time on a body shop (wide body conversion) Any suggestions ? Thanks.
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#147 of 2096 |
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02-02-2022, 07:55 PM
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Registered
Join Date: Dec 2003
Location: Australia
Posts: 349
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My ignition module failed on one channel and was only working on one distributor- wasn’t missing as such but around 5k rpm it was very sluggish. See if both coils are firing - just pull each coil lead off in turn and see. The module is under the LHF seat. Might be worth a look.
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02-03-2022, 02:15 AM
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#147 of 2096
Join Date: Jul 2002
Location: Puerto Rico
Posts: 1,701
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Ok,
Thanks.
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#147 of 2096 |
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02-03-2022, 06:31 PM
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