Blue white smoke at start up

[krambo]

O.K. I am not new to vehicles and engine build-ups and or maintenance. With that being said, is there a common reason I have an oil burn at start-up that is typical for a Typhoon? I have a 92 with 53K and no performance mods. I get a nice puff of blue white smoke only at start up. Do the stock turbos have a seal that is prone to leak? Just asking the dumb question before I rip off the heads and have a valve job done.

BTW, it passes emmissions with flying colors. :tup:

 

[sy#2921]

Re: Blue white smoke at start up

More than likely typical valve seals just like any other small block.

 

[gjp]

Re: Blue white smoke at start up

valve seals. common with our trucks.

 

[DynaGlide]

Re: Blue white smoke at start up

When your truck is running, oil is "flicking" around under your valve covers for lubrication. When you stop the truck, there is oil still on the valve stems, which trickles down the valve and because of leaky valve seals, settles either on the valves, or into the combustion chamber. When you start the truck again, that oil burns off, creating a puff of smoke.

It's a cheap fix if you do it yourself... but its quite time consuming because you have to remove the valve covers, locks, retainers, and springs to get to the seals. It requires, for each cylinder, for the piston to be in a certain position to allow the removal of the spring assemblies. Not exactly what I'd call a novice repair job.

 

[krambo]

Re: Blue white smoke at start up

When your truck is running, oil is "flicking" around under your valve covers for lubrication. When you stop the truck, there is oil still on the valve stems, which trickles down the valve and because of leaky valve seals, settles either on the valves, or into the combustion chamber. When you start the truck again, that oil burns off, creating a puff of smoke.

It's a cheap fix if you do it yourself... but its quite time consuming because you have to remove the valve covers, locks, retainers, and springs to get to the seals. It requires, for each cylinder, for the piston to be in a certain position to allow the removal of the spring assemblies. Not exactly what I'd call a novice repair job.

Yup,...I agree. I have done springs, locks and retainers several times along with 3 cam swaps on LSx motors. I am actually getting pretty good at it. I am figuring on yanking the heads and sending them to the machine shop for a full reconditioning. I would do the Vortec conversion however I have a nice stock Ty and would like to keep it that way ( :tdown: ) Oh well, Does anyone know if doing a cam and some port work on the stock heads is worth it? I figure with a nice stall, built tranny and the cam head work, it will still appear "stock" :dunno:

 

[gjp]

Re: Blue white smoke at start up

unless you know what you are looking at vortecs look stock. Most people dont have a clue. Everyone thought my truck was not stock when it was. L35's look stock. IMO porting stock heads are not worth the time.

 

[James Thomas]

Re: Blue white smoke at start up

Put the Vortec's on it. It's "bolt on" mod that can be "undone" by bolting the stock heads back on. Porting the stock heads is a waste, at the very least the L-35s or it's not worth the time, trouble or money.

________________
James

 

[gjp]

Re: Blue white smoke at start up

You will have to do the lower intake mod too. To go back you will have to get another intake. If you plan on keeping the rest of the engine stock a nice ported set of l35's should work. If you are going to do head work anyways whats another 100$ for some l35 heads.