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TOPIC : Fuel injectors

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Locked-Up Bimmer

This bulletin released by BMW addresses the issue of potential engine hydraulic lock caused by a fuel injector that is stuck in the open position, where the engine will mo longer turn over due to liquid fuel trapped in the cylinder.

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Another Super Duty Glitch

Some 2011-2012 Ford F-Super Duty vehicles equipped with a 6.7L diesel engine built on or before 2-12-12 may exhibit a run-rough and/or misfire concern with or without DTCs P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307 and P0308.

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Rich Audi

Owners of a 2005 Audi A4 Cabriolet may complain of a long cranking engine at operating temperature. No DTC may be stored in ECM memory.

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DEF Contamination

2011-2012 Ford F-Super Duty vehicles equipped with a 6.7L diesel engine may exhibit DTC P1291 and/or P1292 due to an internally shorted fuel injector. An internal short in a fuel injector may be caused by the fuel being contaminated with diesel exhaust fluid (DEF) or by fuel gelling.

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GMC Wire Chafing

This bulletin addresses concerns for rough running, surging and misfires on 2004-2005 GMC Silverado, Sierra, Kodiak and Topkick vehicles equipped with a 6.6L engine.

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Diesel Injector Clamps

Some 2011-2012 Ford F-Super Duty vehicles equipped with the 6.7L diesel engine built on or before 2-12-12 may exhibit a runs-rough and/or misfire concern with or without DTCs P0300, P0301, P0302, P0304, P0305, P0306, P0307 and P0308.

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Crummy Fuel?

Owners of some GM models may comment about a check engine light on during or after a crank-no-start event or a hard start/extended crank event. DTC P0336 may be set.

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All crossed up

This bulletin applies to a number of GM vehicles including 2000-2004 Chevy Malibu, 2000-2004 Buick Century, 2000-2004 Buick Rendezvous, 2000-2004 Chevy Impala, Monte Carlo and Venture, 2000-2004 Olds Alero and Silhouette, 2000-2004 Pontiac Aztek, Grand Am, Grand Prix and Montana models. If the engine exhibits a misfire at a steady speed and rpm, with DTC P0300 set, there’s a good chance that the fuel injector connectors are crossed.

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DEF on injector

Some 2011-2012 Ford F-Super Duty vehicles equipped with a 6.7L diesel engine may exhibit DTCs P1291 and/or P1292 due to an internally shorted fuel injector. An internal short in a fuel injector may be caused by the fuel being contaminated with DEF (diesel exhaust fluid) or by fuel gelling.

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Caddy with a baddy

Some owners of a 2004-2013 Cadillac CTS or SRX may complain about a SES light on with no drivability issues (gee, imagine a Caddy owner who complains). The technician may find DTC P2097 or P2099 set.

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