2000 Ford Expedition

[jimboc]

So i shouldn't rush in to get this fixed?
No other damage will result from waiting until the symptoms become more pronounced. The only other part that could be damaged from from waiting and letting it smoke more would be the Catalytic Convertor. But Leaking Seals isn't enough smoke to damage it.

What exactly will happen next as a result of waiting for the symptoms to become more pronounced?

And i'm wondering:
Someone has implied, used the two subjects in the same paragraph, and/or made me think that a Brief puff of smoke from the tailpipe during startup is the Valve Stem Seals leaking and Smoking from the tailpipe after startup while driving the vehicle is Piston Ring wear.

Does Leaking Valve Stem Seals lead to Piston Ring Wear?

If your oil is changed regularly why would any of this be happening?

The Local Mechanic i've been consulting has read the Forums i've joined regarding this matter and still prefers to wait until the symptoms become more pronounced. He also feels that fixing just the Valve Stem Seals is more of a Band-aid than a resolution.

I've maintained this vehicle regularly hoping to avoid this sort of problem. Maybe you should change the oil every 2k miles instead of 3k with Ford Products.

Is broken down oil the cause of the Valve Stem Seals wearing out?
If not, what did cause this problem?

I'm going to look through the Haynes Manual and see if i can just go in and replace the seals myself without taking off the heads. I feel confident that i've properly maintained the vehicle over the on over work inside is necessary.

But if there is something else that goes Hand in Hand with Valve Stem Seal replacement, please let me know.

Thanks again for all your help!

If you feel like digging in deeper with me on this, be my guest!

[jimboc]

Whitelightning Writes:
CarKB.com/CarForum/Ford/FordTrucks/january2008
http://www.carkb.com/Uwe/Forum.aspx/...f6e28ebb586uwe

Have the Valve Seals replaced after making sure the Valve Guides are ok.

My Question:
How do i determine the Valve Guides are OK?

[JoeShmoe]

Wow thats a lot of forums man, anyway. Try replacing the PCV Valve because I doubt its a bad intake gasket. And for the Valve Seals, its too early to determine that. The Polution (or Purge) Control Valve just recirculates any air that escapes into the valve cover back into the throttle body.

[jimboc]

wow to you, i hope your right!
would be assume if a $6.00 part solved my problems!

[jimboc]

interesting

CRANKCASE VENTILATION: "PCV Valve"
http://209.85.173.104/search?q=cache...lnk&cd=7&gl=us

[jimboc]

i just spoke with the actual technician how will keep the car overnight sometime next week and do what he can to diagnose my problem.
During our conversation he said these cars don't have Valve Stem Seal problems, the PCV Valves never go bad and if there was a hole in the Head Gasket he would have noticed it last week when he had 20 lbs. of pressure on the cooling system for 8 hours.
so i think leaving it with him overnight, with my figures crossed, is the next step to take.
let you know what happens late next week.

thanks for your help!

[JoeShmoe]

Good luck Jim.

[jimboc]

Thanks!