Cold engine one cylinder misfire
Cold engine one cylinder misfire
Hi guys, I have a Volvo s60 T6 2017, 80K mileage. Got a misfire on the 3rd cylinder (PO303). It happens every time after starting up while the engine is cold; it's all good after it warms up (checked with live data from OBD). Potential issues with the ignition coil and plugs have already been excluded. Short- and long-term fuel trims are also okay. I am pretty sure there is a very narrow list of possible root issues. I would appreciate any suggestions. My last suspicion is an Injector, but warming up will not fix it in that case, right?
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volvolugnut
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Connector, power, ground issue with plug or injector at #3 cylinder?
How were plug and coil problems excluded?
volvolugnut
How were plug and coil problems excluded?
volvolugnut
The Fleet:
Volvo: 2001 V70 T5, 1986 244DL, 1983 245DL, 1975 245DL, 1959 PV544, multiple Volvo parts cars.
Mercedes: 2001 E320, 1973 280, 1974 280C, 1989 300E, 1988 300TE, 1979 300TD, parts cars.
2009 Smart Passion
Ford: 1977 F350, 1964 F150 (2), 1938 Tudor Sedan
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And others.
Volvo: 2001 V70 T5, 1986 244DL, 1983 245DL, 1975 245DL, 1959 PV544, multiple Volvo parts cars.
Mercedes: 2001 E320, 1973 280, 1974 280C, 1989 300E, 1988 300TE, 1979 300TD, parts cars.
2009 Smart Passion
Ford: 1977 F350, 1964 F150 (2), 1938 Tudor Sedan
Farmall tractors: 1956 400 Diesel, 1946 A
And others.
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