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From: Norco,CA
Chet
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From: Sapulpa OK
I struggled through this for a number of years. I replaced everything I could and finally took it into a shop where they found a bad engine bay wiring harness. They replaced that and I haven't had a problem since.
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From: Dalton,Ga
here is an update.....ran compression on the passenger side this evening...
all cylinders ran 180-190 psi after the, "what the
"..The tester is a new one "digital"from o-reilys...got a little upset (to say the least) and didnt do the drivers side (should have) but will test tomorrow and hopefully the tester is bad.....Other than a miss the truck seemed to run good and had power.....Is that possible with one whole bank that bad?? (surely not)
all cylinders ran 180-190 psi after the, "what the
"..The tester is a new one "digital"from o-reilys...got a little upset (to say the least) and didnt do the drivers side (should have) but will test tomorrow and hopefully the tester is bad.....Other than a miss the truck seemed to run good and had power.....Is that possible with one whole bank that bad?? (surely not)
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From: Dalton,Ga
It has less than 590....yes put oil in #5 and compression went to 999...off the scale on the guage.....I still can't believe every cylinder is bad on the passenger side.....
Laughing Gas
Joined: Apr 2007
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From: North Port, Florida
here is an update.....ran compression on the passenger side this evening...
all cylinders ran 180-190 psi after the, "what the "..The tester is a new one "digital"from o-reilys...got a little upset (to say the least) and didnt do the drivers side (should have) but will test tomorrow and hopefully the tester is bad.....Other than a miss the truck seemed to run good and had power.....Is that possible with one whole bank that bad?? (surely not)
all cylinders ran 180-190 psi after the, "what the
"..The tester is a new one "digital"from o-reilys...got a little upset (to say the least) and didnt do the drivers side (should have) but will test tomorrow and hopefully the tester is bad.....Other than a miss the truck seemed to run good and had power.....Is that possible with one whole bank that bad?? (surely not)
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Joined: May 2009
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From: Pea Ridge, AR
I'm not sure if there was a spec for "new"(somewhere around 400-450psi probably) but you want more than 350-375psi across the board.
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From: Pea Ridge, AR
I'm not sure what kind of "break-in" is required, probably couple thousand miles, but I also wouldn't think it would be that low either... I'd venture to say the DS is about the same though. Was the motor warmed up? I have rebuilt 2 although I have not had "misses" after all the air was worked out though to even see what compression was after the builds.
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From: Dalton,Ga
I'm not sure what kind of "break-in" is required, probably couple thousand miles, but I also wouldn't think it would be that low either... I'd venture to say the DS is about the same though. Was the motor warmed up? I have rebuilt 2 although I have not had "misses" after all the air was worked out though to even see what compression was after the builds.
new news-----GAUGE IS BAD!!!! we will have a new one tomorrow...put air to the gauge and @125psi it is only showing 40....now back to my miss
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From: Dalton,Ga
well,the saga continues.....in the search for the miss, found cylinder #5 had a hit and miss with compression...Hum,sticking valve??so we pull the head
sure enough,exhaust manifold wet with diesel,back to the builder with the head.....Man, I do love my truck
sure enough,exhaust manifold wet with diesel,back to the builder with the head.....Man, I do love my truck
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From: Dalton,Ga
..I have taken it to another shop for conformation at this point
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From: Damon (South East Texas)
Simply drying things up with some brake cleaner and pouring some fuel into the ports should verify a leaking valve. A good shop should be able to vacuum test the valves. Were the valves lapped to the seats?
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From: Dalton,Ga
Roland,
when it was found,we did a leak down test and it was coming out the exhaust....as far as lapping the valves, i don't know about when it was built but the builder did lap them when i took the head to him yesterday..
I have it at another shop for vacuum test today..
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