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Burning large quantities of oil

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Old 11-05-2013, 01:40 PM
jpsycoboy5 jpsycoboy5 is offline
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Default Burning large quantities of oil

So let me start off I got a new truck 98.5 reg cab long box 4x4 with the 360 145,000 miles has 4.10 and decent tires for $600. Anyways upon first start up its like a mini seafoam blue smoke after that initial any time you punch it blows a decent cloud. I did the plenum and PCV on my last truck but that was 3 years ago can they cause this kind of usage or should I be looking more motor related valve seals, rings, etc.?
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Last edited by jpsycoboy5; 11-05-2013 at 01:46 PM..
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Old 11-05-2013, 01:45 PM
dodge dude94 dodge dude94 is offline
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I would be guessing plenum, but since it's a $600 truck I wouldn't doubt the valve stem seals being gone and/or the rings not being far behind them.

Smoke on first start up is valve stem seals (not to be confused with guide seals), constant smoke is guide seals or rings, and smoke when you're getting on it is usually a blown plenum.
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Old 11-05-2013, 01:59 PM
jpsycoboy5 jpsycoboy5 is offline
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Are the eBay plenums still in existence or did I miss out on that gravy train
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Old 11-05-2013, 05:41 PM
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I didn't get any smoke when my plenum was bad..
Just a clogged cat.
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Old 11-05-2013, 05:44 PM
jpsycoboy5 jpsycoboy5 is offline
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Quote:
Originally Posted by utmkiv View Post
I didn't get any smoke when my plenum was bad..
Just a clogged cat.
The exhaust is all hacked up there's no cat anymore but when I get on it it's consistent and it didn't do this when I first bought the truck
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Old 11-05-2013, 05:50 PM
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Its pretty easy to check the plenum. That's where I would start.
Also, I didn't see any eBay plenums when I was looking (about 2 weeks ago).
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Old 11-05-2013, 07:21 PM
dodge dude94 dodge dude94 is offline
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Originally Posted by utmkiv View Post
I didn't get any smoke when my plenum was bad..
Just a clogged cat.
Sometimes I think the cats filter the smoke out of the exhaust, hence why they clog. But that is just one man's theory.
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The exhaust is all hacked up there's no cat anymore but when I get on it it's consistent and it didn't do this when I first bought the truck
BOOM

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Old 11-06-2013, 02:07 PM
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Alright I'd like to change the symptoms a bit it only smokes on first start up really bad after the truck has been driven earlier I started it up drove it 10 miles everything was fine no smoke or smell shut it down for about a half hour started it back up instant oil burning smell through the vents and smoke out of the exhaust
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Old 11-06-2013, 02:11 PM
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Bad valve seals, worn guides, and still need to have a look at the plenum.
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Old 11-06-2013, 03:13 PM
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Quote:
Originally Posted by dodge dude94 View Post
Sometimes I think the cats filter the smoke out of the exhaust, hence why they clog. But that is just one man's theory.

Makes sense to me. My plenum was bad, and I didn't see any smoke so it had to be going somewhere.
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Old 11-07-2013, 12:14 AM
TheBigRedTruck TheBigRedTruck is offline
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I have the same oil burning problem and am putting of doing the rebuild. Can afford the lost time, but after letting it idle and then driving away and seeing a blue cloud behind me, or even on startup I see a small cloud, and the smell, just reminds me everytime, REBUILD
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Old 11-07-2013, 10:01 AM
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big clouds of smoke at idle is often the valve seals.
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Old 11-07-2013, 10:35 AM
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Quote:
Originally Posted by dhvaughan View Post
big clouds of smoke at idle is often the valve seals.
I always say this but no one ever believes me
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Old 11-07-2013, 10:43 AM
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I believe you.
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Old 11-07-2013, 01:34 PM
TheBigRedTruck TheBigRedTruck is offline
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Definitely valve stem seals. Just hope my rings aren't blown as well.
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Old 11-07-2013, 01:47 PM
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Quote:
Originally Posted by Ham Bone View Post
I always say this but no one ever believes me
I believe you lol.

Valve stem seals can be changed with the heads still on the motor, a few cheaper specialty tools and a air comp and away you go. I would think a good 4hrs work should get it done.
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Old 11-07-2013, 02:55 PM
TheBigRedTruck TheBigRedTruck is offline
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If it only takes a day then I'll plan on doing it this winter. 4 hours for you guys means a whole day for me!
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Old 11-08-2013, 09:33 AM
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Believe it or not I still use the ford rubber umbrella seals ..just did my 99 before the wreck...it was smoking just on start up ,and when it has been sitting for a while at first...I always use the air compressor and spring tool....
If you are going to do this, buy the valve keepers from Napa , they are really (cheap), and when the magnet decides that it needs to drop the keeper in the grass somewhere you will have a bunch of spares, they are hard to find on a Saturday evening
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Last edited by BULLRAM; 11-08-2013 at 09:35 AM..
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Old 11-08-2013, 09:39 AM
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If you don't have an air comp., you can use the cotton clothes line cord trick. Anything that works to get the job done.
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Old 11-08-2013, 09:44 AM
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if you don't have air or the air fitting or don't trust the air, you can also use the rope trick. disconnect battery first !!! with spark plugs out and piston rotated down, feed a soft rope about 1/4 inch diameter into the cylinder. rotate crank to move piston up until it compresses the rope and stops. jiggle it up and down several times to seat the rope. this eliminates the risk of air leak, air loss, etc. you'll still need the compressing tool and some extra keepers are not a bad idea

edit - i type too slow. scooped by arde.
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Old 11-08-2013, 09:44 AM
 
 
 
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