Engine knock Blue smoke @ startup - Ford Powerstroke Diesel Forum
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Old 02-25-2012, 04:01 PM
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Engine knock Blue smoke @ startup

This mechanic worked @ Ford & now has his own shop he just replaced the valve cover gaskets wireharnes 8 new glow plugs Glow plug relay,& Ipr. I got it back & started to smoke blue smoke @ startup about 500 miles it started this Knocking sound not all the time though..I thought broken damper spring in clutch..no peices in the inspection plate. I took it back to him & he said wornin wrist pins, I need a new motor @ 13,500. I thought how could this be I change oil every 3000, I do pull with it but that just makes it run better till latey. I've done a bunch of searches & cant find a 7.3 with wore wrist pins..any ideas?


thanks DaveJ
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Old 02-25-2012, 06:47 PM
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probly the dual mass flywheel goin out. dont put a new motor in it if you have 13000 miles!
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Old 02-25-2012, 07:13 PM
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Already has a LUK signal stage clutch...And he wanted 13,500 to put in reman Motor in it..Truck has 127,000 miles
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Old 02-25-2012, 09:45 PM
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What flywheel does it have?
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Old 02-26-2012, 12:40 AM
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If he was a Ford mechanic and now has his own shop then he was probably a bad mechanic and got fired. Worn wrist pins? Where the hell did he get that from on a 7.3 with 127k miles? I think this guy is making up some serious bs to get your money.

Why did he do the gaskets and glow plugs etc? Was there a previous problem? Either way don't pay him 13k for a new motor. That is some major BS and he needs to be slapped around.
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Old 02-26-2012, 06:54 AM
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clutch was LUK Kit single mass flywheel,clutch disc,throwout brg new brg fork. & it is giving me problems, It shutter grabs when take off when cold. It had a fuel leak this winter & the motor valley was full of diesel, this mechanic said while I was in there it had 4 burnt out glow plugs, relay was going bad, had melted wiring harness on the glow plugs..witch it did. well the fuel from driving & fan pushed some fuel down the back side of the motor & well got to my clutch. The z5 has cooler vents in the bell houseing that made easy access for the fuel to contaminate the disk,,,,,,
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