Smoke on startup

[RAST]

2001 4.0 SOHC, 118,000 miles. Lots of blue smoke on startup after 25 mile drive and then setting 2 hrs. 5W-30 high mileage Mobile, not synthetic. Nothing visible while driving, slowing down and speeding up. Not noticeable in around town type driving, lunch hour stops short runs etc. Compression is 185-190. Rear plugs on left bank carbon up so they are the suspect cylinders. Any ideas besides valve stem seals which is what I suspect.

 

[FIND]

Classic case of leaky valve-stem seals.

 

[yavapaires]

2001 4.0 SOHC, 118,000 miles. Lots of blue smoke on startup after 25 mile drive and then setting 2 hrs. 5W-30 high mileage Mobile, not synthetic. Nothing visible while driving, slowing down and speeding up. Not noticeable in around town type driving, lunch hour stops short runs etc. Compression is 185-190. Rear plugs on left bank carbon up so they are the suspect cylinders. Any ideas besides valve stem seals which is what I suspect.

FYI I have used Ford 289 (others similiar,351/400M for instance), as a cheap alternative for leaking valve stem seals. I hahe done this on a number of small block Chevys. I don't know if it will work on the SOHC or not. Just throwing that out there.

 

[1996BLKBauer]

I know some people are against Seafoam, but possibly try some though the system and see if it helps at all.

 

[yavapaires]

You are already burning oil. Why try cleaning, and making the situation worse.

 

[RAST]

Thanks for the reply's. I knew better but was hoping for something easy.

 

[FIND]

Sorry we couldn't give you any better news.