ok, lets try some help here too!
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Elder User
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From: Lunenburg, MA
ok, lets try some help here too!
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Oh sure he will, because he's such a friggin' know it all...right!?? 
All of that work and diagnostics and no one suggested a compression test?
I suspect either an existing crack in one of the heads showed up when did an R&R on the intake, or something fell into one of the intake ports and is jambing a valve open.
All of that work and diagnostics and no one suggested a compression test?
I suspect either an existing crack in one of the heads showed up when did an R&R on the intake, or something fell into one of the intake ports and is jambing a valve open.
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Elder User
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From: Lunenburg, MA
Oh sure he will, because he's such a friggin' know it all...right!??
All of that work and diagnostics and no one suggested a compression test?
I suspect either an existing crack in one of the heads showed up when did an R&R on the intake, or something fell into one of the intake ports and is jambing a valve open.
All of that work and diagnostics and no one suggested a compression test?
I suspect either an existing crack in one of the heads showed up when did an R&R on the intake, or something fell into one of the intake ports and is jambing a valve open.
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Elder User
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From: Lunenburg, MA
intake/intercooler.
[IMG]<a href="http://s414.photobucket.com/albums/pp227/cseverens/kids/?action=view¤t=Picture008.jpg" target="_blank"><img src="http://i414.photobucket.com/albums/pp227/cseverens/kids/Picture008.jpg" border="0" alt="Photobucket"></a>[/IMG]
[IMG]<a href="http://s414.photobucket.com/albums/pp227/cseverens/kids/?action=view¤t=Picture008.jpg" target="_blank"><img src="http://i414.photobucket.com/albums/pp227/cseverens/kids/Picture008.jpg" border="0" alt="Photobucket"></a>[/IMG]
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From: Lunenburg, MA
gaskets are virtually identical. used both sets, no change. gaskets and vac leak at manifold ruled out. thanks though.
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bad news. posted this info on other site 03/13:
"heard from him. cyl 1 = 150psi, cylinder 5 - 100psi. couldn't see anything broken on the scope."
he added a little oil to cyl 5, and the compression came up a little. said it's either rings or a valve in the head. didn't have time or equip to do leakdown test.
"heard from him. cyl 1 = 150psi, cylinder 5 - 100psi. couldn't see anything broken on the scope."
he added a little oil to cyl 5, and the compression came up a little. said it's either rings or a valve in the head. didn't have time or equip to do leakdown test.
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ok. i've been reading symtoms of both bad rings and a burnt valve. i don't see any excesssive smoke. i will check my oil level tonight. i'm leaning towards the valve, which basically means a new/used head. alldata states 18 hrs to do the head, and 24 hours to replace the engine (which i would do if it was a ring issue), so the labor would be a little cheaper if i am right, but the part would be a lot cheaper! we'll find out this summer.
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checked the oil dipstick...and she was full to the top.
side note:don't know if this helps or not, but there is a coolant smell in the engine bay after the truck has run. any chance it's just a head gasket? no leaks on the ground.
side note:don't know if this helps or not, but there is a coolant smell in the engine bay after the truck has run. any chance it's just a head gasket? no leaks on the ground.
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weekend update: we were replacing the headlights connectors this weekend (damn high wattage bulbs!) and notice the overflow bottle well below the cold fill line, and a little dirty (not bright yellow). fresh coolant was installed not that long ago. no visible leaks anywhere. really starting to lean towards the lh head gasket....imo that would explain a loss of compression across the left bank, with #5 being the worst, but i'm far from mechanic material! the only other thing that got our attention was that the i/c reservoir was low too, but at least it maintained it's bright yellow color.
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It sounds like a head gasket failure. If the compressed gas from combustion is being forced into the cooling system it is likely forcing coolant out through the overflow giving that smell.
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that's where i'm leaning right now, esp based on my last post. still waiting to get the leakdown down to know for sure. hopefully next weekend. if it is a blown gasket, i'm having both replaced...the engine has to come out anyways.