Burning Oil 5.3 suggestions?

[TysonTrost]

My 5.3 06 Yukon has been burning oil for a while now less than a quart a month. Attempted pcv valve replacement but she was in there tight. Any suggesttions? Doorman valve cover? Cleaning the baffles?

On start up sometimes she'll blow a good chooch of white smoke.

 

[Scottydoggs]

smoke on a cold start, generally is the valve seals gone bad. no fun to change, need compressed air in the cylinder to hold the valves up, remove the rockers and springs and then the seals are at the base of the valve guide.

 

[TysonTrost]

smoke on a cold start, generally is the valve seals gone bad. no fun to change, need compressed air in the cylinder to hold the valves up, remove the rockers and springs and then the seals are at the base of the valve guide.

Thanks sometimes it's not even a cold start, coolant at 150 after she's been off for an hour and it'll smoke should I not by the valve cover then or would it also help?

 

[swathdiver]

Thanks sometimes it's not even a cold start, coolant at 150 after she's been off for an hour and it'll smoke should I not by the valve cover then or would it also help?

Pull the heads and have them reconditioned.

 

[Scottydoggs]

valve cover is not gonna help, them seals sound pretty bad if it smokes after a short sitting. how high are the miles? might be best to just get em rebuilt like stated above. if really high.

 

[TysonTrost]

valve cover is not gonna help, them seals sound pretty bad if it smokes after a short sitting. how high are the miles? might be best to just get em rebuilt like stated above. if really high.

Dogs got 202,913 mi, how hard would it be for me to rebuild the heads myself with some help of course. plus i think she's got the lifter tick so if im pulling the heads new lifters and cam???

 

[Scottydoggs]

you could lap the valves, but thats not near the same as full rebuild. the guides might be getting trashed and caused the seals to fail, or its just age.

if you want to do a cam may as well go with something to add some hp.

 

[TysonTrost]

you could lap the valves, but thats not near the same as full rebuild. the guides might be getting trashed and caused the seals to fail, or its just age.

if you want to do a cam may as well go with something to add some hp.

I've been guessing that it's random lifter tick but I also am missing both rear manifold bolts F*** me. So would I need to take the heads off for this reconditioning and rebuild? Maybe my tick is exhaust and not lifters so no cam i am on a budget.

 

[Scottydoggs]

missing bolts can cause a tick that goes away once the engine is warmed up...ive been there. even took it to the dealer and they "surprise" could not figure it out. i was doing brakes or shocks and saw the black soot from the leak on the head. i got lucky and my bolt just came out. ive had to remove the manifold to remove 3 busted bolts on the work truck tho. got lucky there too, just the heads came off and i was able to get the bolts out with vice grips.

they also sell a clamp to bolt in place of the busted bolt on the rear and the front.

 

[Big Mama]

Leaky valve cover won’t cause smoke out the pipe. You may be loosing oil there but you’d see drips on driveway