masospaghetti
Explorer Addict
- Joined
- October 22, 2006
- Messages
- 1,526
- Reaction score
- 160
- City, State
- Huntington Beach, CA
- Year, Model & Trim Level
- 98 XLT, OHV, 4D, 4x4, 5M
I'd check the PCV valve/system first. You might get lucky.
If no joy, it's got to be bad valve stem seals, or piston rings.
(Maybe a stem seal has split or was installed incorrectly.)
Might also pull the plugs and see if one has been oil-fouled
more than the others. That'll at least isolate the problem.
That's a bummer to do all that work and then see smoke...
The symptoms sure seemed like bad valve seals - despite the heads being new, so I pulled the plugs today. Plugs #4 and #5 had wet oil on them, all of the others were dry. So I bit the bullet and pulled the driver's side valve cover (which unfortunately requires removing the upper intake, again!)
Looks like the valve seals on #4 and #5 have a tear in them, partially obscured by the (incorrect) timestamp:
No idea if these tears would be enough to cause the symptoms, but they need to be fixed regardless.
I've been practicing removing the valve springs and seals on my old cracked head using the Lisle 36050 kit. It easily removed the springs, but it was tough getting the intake one back on, and I couldn't get the exhaust one back on even on the bench. I feel like this would be impossible to do on vehicle. Any suggestions or tips to make this easier? Maybe try a different style tool?