Valve guides getting replaced
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Postmaster
Joined: Aug 2015
Posts: 3,146
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From: Maryville, TN
Valve guides getting replaced
EDIT: title is wrong and I can't change it. It is getting valve seals replaced.
I walked into our truck shop today and noticed one of our 6.2 trucks with the hood up. Evidently it is smoking badly on start up. They are putting new valve seals in it.
Don't let this alarm you guys, these trucks are badly miss treated. Im betting this truck has had every oil change pencil whipped. The mechanic doing the work just shook his head and said there was sludge build up under the valve cover. We also get the bottom tier cheapest gas on earth brought in here. All these trucks ping and carry on, and the couple ecoboost we have, have had fuel related issues. The truck was built 11/12, has 20k miles, 28?? Hours, and 768 idle hours.
I walked into our truck shop today and noticed one of our 6.2 trucks with the hood up. Evidently it is smoking badly on start up. They are putting new valve seals in it.
Don't let this alarm you guys, these trucks are badly miss treated. Im betting this truck has had every oil change pencil whipped. The mechanic doing the work just shook his head and said there was sludge build up under the valve cover. We also get the bottom tier cheapest gas on earth brought in here. All these trucks ping and carry on, and the couple ecoboost we have, have had fuel related issues. The truck was built 11/12, has 20k miles, 28?? Hours, and 768 idle hours.
Laughing Gas
Joined: Jun 2011
Posts: 842
Likes: 6
From: Manitoba
Thats why I will never buy a fleet truck! We had the front cv axle on a chevy 2500 fail and practically take out the entire passenger side suspension. Lucky for the lady driving that it was the passenger side so it put her in the ditch and not in the on coming lane.
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Postmaster
Joined: Aug 2015
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From: Maryville, TN
Don't worry guys, these trucks never make it back out to the public. When we are finished with them, about the only thing they are good for is the crusher. I'm driving around in a '98 f150 that just rolled over 36k. That would probably be equivalent to 360k or more out on the road. The trucks in my department are probably the best trucks in the plant, because we have our own. The trucks that are shared are terrible. Combine the mechanical mistreatment with a corrosive environment and some bad drivers in tight quarters, you can just imagine.
Fleet Mechanic
Joined: Feb 2002
Posts: 1,483
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From: Tulare U.S.A.
If the heads are staying on than thay are probably doing valve seals not valve guides.
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Postmaster
Joined: Aug 2015
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From: Maryville, TN
I believe the valve seals were replaced for no reason. I had told the guys about the TSB on the valve covers because of defective baffles. But after finding out the year, I didn't think it was in the correct build dates. They said the baffle was full of oil, and they ordered new valve covers anyway. When they looked at the new ones, there are weep holes in the baffles, and the old baffles had so much build up, they were clogged plumb up. The pcv valve still rattled when shook, but there was a film in the hose. The truck also has 28k, not 20k, and it's got a build date of 11/12, so actually a '13 model.
Moral of this story, change your oil in reasonable intervals, and more often if you idle a lot. Something we all know, but some don't practice.
Moral of this story, change your oil in reasonable intervals, and more often if you idle a lot. Something we all know, but some don't practice.
More Turbo
Joined: Jan 2005
Posts: 510
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From: Clinton TN.
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Postmaster
Joined: Aug 2015
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From: Maryville, TN
Funny you say that, because I do. My father-n-law has used it as assembly lube on CAT motors and dirt track engines for decades. It is good stuff, it bonds to the metal. It seemed to help some with the common tick on start up a lot of these 6.2's have.