Duramax Diesels Forum Truck of the Week
  #1  
Old 07-30-2011, 03:18 PM
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Default Im confused

So, i started the truck up finally after sitting for 5 months to move it into a different spot and put my new truck cover on. Well i finally got it started after charging the battery and after about two min of idling it quit hazing white and idled perfect. So i decided to take it for a drive. Didnt smoke white once nor make any kind of knocking like before.

So now im confused lol. Cyl 5 showed compression at 250 in march and thats the one that was smokin. Now all seems fine. Im doin a compression test again tomorrow but am i missing something here? I couldnt get it to stop smoking before no matter how long i let it warm up and now it stopped. Any one got an idea?
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Old 07-30-2011, 03:29 PM
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Maybe a valve seat not sealing/ cylinder head problem ? Def re-do compression check but that would be awesome if it was something besides bent rods .
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Old 07-30-2011, 04:01 PM
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Quote:
Originally Posted by TrentNell View Post
Maybe a valve seat not sealing/ cylinder head problem ? Def re-do compression check but that would be awesome if it was something besides bent rods .
Makes since to me. possibly the rings werent sealing well either due to some other variable that no longer exists. Hope it fixed itself drive er til she knocks again lol
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Old 07-30-2011, 04:21 PM
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That's pretty cool news James
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  #5  
Old 07-30-2011, 04:42 PM
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Quote:
Originally Posted by TrentNell View Post
Maybe a valve seat not sealing/ cylinder head problem ? Def re-do compression check but that would be awesome if it was something besides bent rods .
I dunno. Its really confused me. Even with it being hot out it should still smoke right if compression is low? It was about 80 back in march when it was smokin then
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02 LL7 2500HD CC/LB dmax/alli "The Limo"

BIG THANKS TO: Mike L, Steve, Trent, Guy, Dan, Ruben, Josh H, Scott, Brian and everyone else who has put a hand in to help me.

best time to date: 12.39

motor died/bent rods = 3/11/11
back from the dead 7:04pm 4/9/2012

Limo is back in the garage, now driving a built chevy tracker
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  #6  
Old 07-30-2011, 04:43 PM
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Man that is great news! Like was said, drive it till it knocks!


Nick
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Old 07-30-2011, 04:45 PM
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Originally Posted by paint94979 View Post
That's pretty cool news James
Im not gettin my hopes up yet lol. But i really hope its an injector or some fluke deal. Would really save me some coin right now
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02 LL7 2500HD CC/LB dmax/alli "The Limo"

BIG THANKS TO: Mike L, Steve, Trent, Guy, Dan, Ruben, Josh H, Scott, Brian and everyone else who has put a hand in to help me.

best time to date: 12.39

motor died/bent rods = 3/11/11
back from the dead 7:04pm 4/9/2012

Limo is back in the garage, now driving a built chevy tracker
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  #8  
Old 07-30-2011, 04:47 PM
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Got a scope you can put in the glow plug hole?
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Old 07-30-2011, 05:51 PM
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Originally Posted by SSchmi5519 View Post
Got a scope you can put in the glow plug hole?
You think i got that kind of high tech stuff!?! Lol na but might invest in one.


I was thinkin though. I drilled my oil return for the 475 between the number seven and five injector on the valve cover. I wonder if some little shaving got left behind when i was drilling or tapping and it got caught in the valve train
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James

02 LL7 2500HD CC/LB dmax/alli "The Limo"

BIG THANKS TO: Mike L, Steve, Trent, Guy, Dan, Ruben, Josh H, Scott, Brian and everyone else who has put a hand in to help me.

best time to date: 12.39

motor died/bent rods = 3/11/11
back from the dead 7:04pm 4/9/2012

Limo is back in the garage, now driving a built chevy tracker
Tailgate Crew Member #4
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Old 07-30-2011, 07:11 PM
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Hopefully you'll be updating your sig tomorrow
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Old 07-30-2011, 08:45 PM
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Why did you drill the valvecover? I wonder if it smokes because the oil doesn't drain fast enough? Turbo will pass oil if there is a restriction in the drain line.
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Old 07-30-2011, 08:55 PM
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Quote:
Originally Posted by dmaxvaz View Post
Why did you drill the valvecover? I wonder if it smokes because the oil doesn't drain fast enough? Turbo will pass oil if there is a restriction in the drain line.
this is absolutely true, my first oil drain on my twins could not flow enough and i had a white smoke issue and was burning oil. make sure that you have good pitch and a large enough diameter for gravity flow, there can be no pressure in the drain line.
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Old 07-30-2011, 08:59 PM
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[/QUOTE=dmaxfireman;484766]this is absolutely true, my first oil drain on my twins could not flow enough and i had a white smoke issue and was burning oil. make sure that you have good pitch and a large enough diameter for gravity flow, there can be no pressure in the drain line.[/QUOTE]
Wow you learn something new every day lol sounds like a very plausible theory though
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The Climax:
2002 2500HD lb7/zf6 in '85 K10 chassis
40% injectors
ATP tune
Dual disc clutch
Remote mount NP205
Axletech 4000 9 ton planetary axles
14.9-24 BKT 171 tractor tires

Scarlett:
2009 LMM
Bone stock
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  #14  
Old 07-30-2011, 09:05 PM
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Quote:
Originally Posted by dmaxvaz View Post
Why did you drill the valvecover? I wonder if it smokes because the oil doesn't drain fast enough? Turbo will pass oil if there is a restriction in the drain line.
Quote:
Originally Posted by dmaxfireman View Post
this is absolutely true, my first oil drain on my twins could not flow enough and i had a white smoke issue and was burning oil. make sure that you have good pitch and a large enough diameter for gravity flow, there can be no pressure in the drain line.
Its not the turbo. no oil in the charge pipe or down pipe and i put a hard 3k on it before all this started. Smoke would stop as soon as i shut injector 5 off back in march. I drained to the valve cover as thats where trent puts his drains and it wasnt that bad to do. The drain had a nice angle to it and should cause no restriction. Not to metion, you dont smell buring oil coming out. it was the smell of raw diesel
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02 LL7 2500HD CC/LB dmax/alli "The Limo"

BIG THANKS TO: Mike L, Steve, Trent, Guy, Dan, Ruben, Josh H, Scott, Brian and everyone else who has put a hand in to help me.

best time to date: 12.39

motor died/bent rods = 3/11/11
back from the dead 7:04pm 4/9/2012

Limo is back in the garage, now driving a built chevy tracker
Tailgate Crew Member #4
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  #15  
Old 07-30-2011, 09:16 PM
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Quote:
Originally Posted by Chevy1925 View Post
Its not the turbo. no oil in the charge pipe or down pipe and i put a hard 3k on it before all this started. Smoke would stop as soon as i shut injector 5 off back in march. I drained to the valve cover as thats where trent puts his drains and it wasnt that bad to do. The drain had a nice angle to it and should cause no restriction. Not to metion, you dont smell buring oil coming out. it was the smell of raw diesel
Hey, just a thought. I hope you do have good luck with not having a bent rod
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01 chevy 2500hd rclb, all work and no play! boss v plow, 65 hp predator tune, afe intake, dimondeye 4" exh., 285s, stock everything.
02 chevy 2500hd ccsb, rancho 9000s. suncoast IV w/1057, EFI LIVE dsp5, AD150. LBZ CP3. Kriptonite centerlink/tierods. 305/55r20s Toyo a/t. Billet wheel s366/74 by Northwest Diesel Service and Performance. BD Blowoff valve. New best 1/4 mile time: 12.59 @106.62. Toman Tuning Inside.
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