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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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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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Quote:
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
jpsycoboy5 jpsycoboy5 is offline
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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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