Smoking

[RATRACER]

It's a 1985 2.6 / Truck started smoking rely bad all of the sudden. I don't think it's the head gasket. at least there is no water in oil or bubbles in radiator when cold. Valve seals replaced a year ago and they look to be in place still. The number 1 plug fouls within a few minutes after running. Could this be caused by the jet valve? Is there a way to test? It looks like there threaded into the head. Can I just remove the valves and put plugs in? Thanks for the help.

[geezer101]

There are jet valve delete kits available. No need to cut off the jet valve rocker arms during the delete procedure - just unscrew the rocker adjusters and remove them. Do a compression test and see what might be causing #1 to go bad. Don't dismiss the possibility of a cracked head or a blown ring. It may need a visual inspection to verify. Jet valve heads are prone to cracking, so be thorough when removing the head for the jet valve delete. It would be a good idea to source a non jet valve head in the event that your current head is toast.