Liquid to stop Oil Leaks?

Question

I have a 94 Chevy 1500 and when i start it, it smokes white and smeels like burnt oil, and my dad said it was the valve seals leaking. Ive seen stuff advertised on the SPEED channel that is suppossed to stop leaks. I guess there are a few different types. Does anyoe know if any of that stuff works and where i could find some?

Ive already had to replace the head gaskets becuase it got extremly hot when the radiator hose blew. Imagine that huh? And i assume you add this to the oil when you change it?

Answer 1

this is the way it works, if your valve seals are going or bad it will smoke all if not most of the time, and a heavier oil may help alittle but more like not at all, and it may burn less after the start up but if seals are bad they are bad, and not much you can do but replace em, and valve seals can be replaced right on the car, no need to pull the heads or the motor, but if its not burning oil all the time or most of the time, its not it.

if it smokes on first starts of the day or only after it has been setting long anuff to cool down, and this is what i think it is as you said that you did over heat the truck once doe to a head gaskets, the rings are going.
what happens is when you start your motor up it builds heat and the ring expand stopping it from burning oil, and because the rings are so deep in the motor they hold heat for along time so it wont smoke again tell the next day or it has been setting for long enuff to cool down throw out the motor.
a heavier oil may help alittle, and you can add Lucas to your next oil change, and again this may help alittle, but in time they will have to be replaced.

Answer 2

Since it is smoking white at start up that usually is a tell tale sign that the valve guides are worn. Liquid in a can will not fix this problem. The reason being is when you start up the engine when it is cold it leaks oil into the cylinders. Then once the engine is up and running it heats up and takes up the wear in the valve guides because of heat expansion and it doesn't smoke as bad or not at all. The best thing to do to get a little more time out of it is to, install a hotter set of plugs and use a heavier weight of oil. Like if you running 5w-30 try running 10w-40 or 30 weight, or 15w-40. Rotella oil is good thing to think about in these weights and doesn't break down as easy. since the oil is thincker it will not leak through the guides as bad as a lighter weight oil would. plus it will not gunk up your motor. The only down fall is you need to let your rig warm up a little longer if it is cold out. This just ensures you get the proper lubrication to all areas of the motor. Also recomend the hotter plug to be an ACDELCO brand. Have had lot better luck with the factory brand than other plugs like bosch,champion,motorcraft ect. Hope I helped out a little. THANKS JEFF

Answer 3

I hate to say this but your Chevy has no valve seals. The large tin looking umbrellas around the top of the valve springs are Chevrolet's poor excuse for valve "shields" Your valve guides are most likely worn. They can be repaired by drilling them oversize and pressing in hardened steel or bronze wall guides. It's too bad this wasn't checked when the heads were off.
Valve guide problems are pinpointed when a running engine quickly decelerates. Blue smoke will come out of the exhaust because the vacuum created in the cylinders actually suck oil down the valve guides from the valve cover area.

Answer 4

I had a GMC mini van. The mechanic told me it was normal for this engine to blow smoke on start up but should be gone after a few seconds. I had a 4.3 liter engine in a 1990 GMC Safari van and it did this. He said it was just a start up thing but it didn't happen until we had hit about 75 K on it. He said the seals were dry and needed to get the oil up there before it would quit. Sold it after 17 years with 92K on it and never really had an engine problem.

Most everything else went to crap but not the engine itself. Sounds like you have had a pretty good vehicle over the years. Depends on what you want to put into it. I use Maxlife oil ( think is is Valvoline brand) in my current 2000 GMC Truck ( basically a Chevy 1500) Have some "dieseling "on start up but after about 40 seconds it goes away.

Hope you aren't in need of a re-build so close to deer season.
I wish you luck

Answer 5

When the heads were pulled, that's when the valve guides and seals should of been checked for wear and hardness of the seals.

Answer 6

Yeah it does work but it will gunk up your engine in time and then you will could end up having to get the head gasket replaced.

Answer 7

Ahhh Instant Engine overhaul in a bottle! my brother who is a mechanic told me about htis sh it and he says it works, so what the heck try it! cant hurt! he did it to his grand prix and was amazed really!

Answer 8

What field is hyromatics?