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what does burnt valves sound like?

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Old 09-02-2006, 02:58 PM
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Originally Posted by 02sierraz71_5.3
If your burning antifreeze youve got alot bigger problems than valves
do have whiteish bubbles in the oil or does oil end up in the coolant reservior?

No i was just asking for my information. Just curious.
Old 09-02-2006, 10:23 PM
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turns out i believe i have a burnt piston as suspected. i'll be pulling the motor and checking everything out. going back with a punched out 6.0. in the process of looking for pistons, rings and rods. should be a fun build
Old 09-02-2006, 11:45 PM
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good luck with the built john. keep us updated!!
Old 09-13-2006, 04:32 PM
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Default Fixin my 6.0l Valves as I speak

Originally Posted by onebadrubi
will a burnt valve throw any codes? What about oil consumption or anitfreeze?
Eventually O2 sensors will light up then multiple missfire codes
My 6.0L consumed oil (1L to every fill up eventually) with no smoke or eventually a little smoke and an engine with no ***** everything else said in this disscsion is right on the money
Old 09-13-2006, 04:41 PM
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Originally Posted by goshawk23
turns out i believe i have a burnt piston as suspected. i'll be pulling the motor and checking everything out. going back with a punched out 6.0. in the process of looking for pistons, rings and rods. should be a fun build
Most people told me it was a bunrt piston acually almost everyone did
I had 30 psi compression in cyl #7 and it was my exhuast valve
6.0L rebuilds are expensive I know , I would take a couple hrs and check heads first, from discussion with other and after seeing the internals of mine your bottom may be in good shape
Old 09-13-2006, 06:11 PM
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yea but he was hard headed and went and raced that lighting and ran it lean he was still on a 5.3 tune
Old 09-13-2006, 11:40 PM
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as randy stated, i was indeed hard headed and ran it kinda hard racing a L. i won, but i lost at the same time. but i'll end up with a stronger motor for the most part.
Old 09-14-2006, 12:02 AM
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Originally Posted by goshawk23
as randy stated, i was indeed hard headed and ran it kinda hard racing a L. i won, but i lost at the same time. but i'll end up with a stronger motor for the most part.
Damn dude. My first thought was...Dumbass! but then I reflected back and realized I have done equally as dumbass of things.

If it feels like it is runing ok and you get up next to a Lightening and then the ego takes over and
Old 09-14-2006, 12:24 AM
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Originally Posted by TurboGibbs
Damn dude. My first thought was...Dumbass! but then I reflected back and realized I have done equally as dumbass of things.

If it feels like it is runing ok and you get up next to a Lightening and then the ego takes over and
exactly. all i will say is the L was way way way behind. i even let up and went 3/4 throttle and he still didn't gain.
Old 09-18-2006, 09:42 AM
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Leakdown test will tell you if it's a piston or valve. If it's the valve, you'll hear air coming out of the exhaust port. If it's a piston, you'll have air coming out of the crankcase.
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