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2.9L & 3.0L V6 Tech General discussion of 2.9L and 3.0L V6 Ford Ranger engines.

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Old 02-19-2009
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3.0 Misfire

We had this vehicle come in with a misfire on the #1 cylinder, so we did a complete tune-up with plugs, wires, & ingition coil. Checked fuel system, injectors, pretty much everything to cause a misfire we have checked. The only DTC's is the #1 misfire.

Any help as to why this poor 3.0 is still having a misfire? This is on a 2002, 2WD, ext cab. Thanks in advance!

Brenton
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Old 02-19-2009
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cam synchro will throw misfire codes on occasion, did you do a compression or leak down test?

is it an intermittent misfire or is it a dead hole?
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Old 02-19-2009
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Compression check #1 ?
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Old 02-20-2009
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We've already replaced the cam synchro, so that's not it. And it will run like crap from the moment you start it.

Compression is good, 150 psi on cylinder #1. Were gonna try a leak down test in a few & I'll get back here.

Brenton5
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Old 02-20-2009
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Quote:
Originally Posted by EdGe_wannabe View Post
We've already replaced the cam synchro, so that's not it. And it will run like crap from the moment you start it.

Compression is good, 150 psi on cylinder #1. Were gonna try a leak down test in a few & I'll get back here.

Brenton5

Check TRS
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Old 02-20-2009
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check that injector for noid and see if you hear the injector firing with a stethoscope
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