Quote:
Originally Posted by danielsatur
By isolating the EGR + PCV system from your engine will run better, and should run good for another 200k miles.
|
As stated before, this is false. The PCM is expecting the EGR valve to open, thus expecting different readins from the HO2 sensors when commanded open. Since the PCM does not know it's not opening, it compensates incorrectly, which can cause the mixture to go too lean or rich and will either cause more heat/damage or waste fuel. The PCV system should remain as it is to keep the crankcase ventilated properly to keep it and your oil clean!
Quote:
Originally Posted by danielsatur
A little leaky valve stem seal is really no big deal, after 400k miles you make consider a new Engine.
Try to find out how much oil is being burned inbetween oil changes.
|
Agreed, if you only get a bit of a puff on startup and burn less than a quart in 3,000 miles, it's "acceptable." Your compression should be around 120-130psi and all within 10 psi of each other.
If it does come down to needing the stem seals needing replacement, just get a used engine. 1996 and up do not have the stem seal issue. 2001 and up are PI (Performance Improved) engines and can offer a little more performance over 1992-2000 engines. 2000-2003 have known weak timing chain tensioner arms which should be inspected/replaced (not hard to do - see pictures in my signature). You can get a used engine with under 100k for under $1000 easy. Avoid engines from police cars if possible - they have high idle times compared to civilian models.
Doe's Mexico require to have a routine emission test on used cars?[/quote]