Truck burns a ton oil? Valve seals?
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Registered User
Joined: Aug 2008
Posts: 6
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From: dayton, ohio
Truck burns a ton oil? Valve seals?
Alright i have a 97 lifted doge ram its not stock lol but i have dual exhuast with no cats going into maganaflow expansion champers coming out right before the passenger side back tire! and when i start the truck up i huge cloud of smoke comes out and its got a blue tint to it so its oil most likely! it only burns alot when i start and then when i get on it hard? im thinking its my valve seals what do you guys think? this happend after i put Q horse power full synthetic motor oil in it. so im guessing the guy before me had mineral motor oil in it and when i put synthetic in it freed up deposits some which would might have been helping my parts seal? anyways what do you guys think? anybody esle have this problem?
Rookie
Joined: Oct 2006
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i would have to guess your v.guides. Usually when you have a bad v.guide when you first start your vehicle it will burn off the oil that has dripped down onto the valve from the valve guide you can repair these takes a little bit of thought but you can actually use air to hold up the valve and replace the valve but don't take my word for sure on thats whats goin on its only if i had to guess
Professional
Joined: Jul 2008
Posts: 119
Likes: 1
From: Eastern Shore of Virginia
If your truck is smoking on start up it most likely the valve guides as said above. They will also cause smoke upon deceleration fwhen increased engine vacuum will suck oil past the guides.
If the truck is smoking when you are getting on the throttle it will be your rings allowing oil to pass.
The Good news is, if it is the valve guides you can put "umbrella" seals over the valve stems inside the springs. To do this you need to be very careful that the valve does not drop into the cylinder. As said above air pressure can be used to hold the valve in the closed position. You have to make a sparkplug into an air inlet, put it in place of the sparkplug hole for the cylinder you are working on and keep air pressure on the cylinder. The piston MUST be at Bottom Dead Center.
The bad news is that if it is your rings you are looking at an engine rebuild.
If the truck is smoking when you are getting on the throttle it will be your rings allowing oil to pass.
The Good news is, if it is the valve guides you can put "umbrella" seals over the valve stems inside the springs. To do this you need to be very careful that the valve does not drop into the cylinder. As said above air pressure can be used to hold the valve in the closed position. You have to make a sparkplug into an air inlet, put it in place of the sparkplug hole for the cylinder you are working on and keep air pressure on the cylinder. The piston MUST be at Bottom Dead Center.
The bad news is that if it is your rings you are looking at an engine rebuild.