You might consider replacing your spark plug wires, distributor cap and rotor.

 

welllll, my 92, 22RE, still has the factory plugs in it ------292,XXX miles on it---runs great !

i change the oil every 10/15K if it needs it or not.
put front pads on it at @ 175K-
still runnin the factory belts-
loading it now for a weekend run 4X thru Panamint Valley, Death Valley, Saline/Eureka Valleys, and the mountains/ mines there-in. @(180 miles in 4 wheel drive):whatwhat:

 

ya I already replace the wires cap and rotor.


I'm glad your truck works great, that really helps me out.

 

Don't you mind Ol' Krusty

And what ever you do, don't you be sayin nuthin that'll rile him up. Next thing you know he'll be ramblin about wheels with wood spokes and all that.


Somehow you are going to have to figure out just what it is about these spark plugs that makes them "bad"

If they are not getting fouled in any way then somehow they are getting cracked so that the spark energy is leaking through the insulation

Can you post a picture so we can see.

I just read what you said about the coolant loss, If you have a leaking head gasket, the coolant will get on the hot spark plugs and crack the insulation right near the tip of the center electrode. so go back and inspect closely for cracks

 

FIrst off what do the plugs look like when you take them out?
Is the truck running rich?

 

All 4 of the plugs look the same as far as color, except the threads on the one closest to the firewall is darker. It's only the threads though, everything else looks the same as the other ones. I can take a pic but I don't know how to post it. Can I email it to someone on here so they can post it up or if you tell me how to post it I'll probably figure it out.
Keep in mind the plugs are pretty new less than a year.

 

What exactly is going "bad"?

 

I wish I knew how to post pics I would offer to do it. We need pics or a better description. are they coffee with heavy cream little cream chocolate expresso? are they broken, missing parts, heavily worn? what brand and model of ngk or nd? what brand of cap rotor wires coil? was this happening before the change of these parts? I apologize if I sound a little smarta$$. We need a little more to go on to help properly.

 

Email the pics to me @ nulloutput at gmail dot com ill post them for you

 

Ok I have an update, after changing the plugs agian my truck ran fine since the last post. Then yesterday started missing again. I changed only that ONE plug, the one closest to the firewall and the truck runs fine now again. So my question is how is this thing getting fouled? It looks darker than it should, but not as dark as the one I previously removed. There is a little dried oil around the spark plug hole so is there any way the oil is coming up through the engine? The threads are kind of funky on this plug so I was thinking they might be allowing a small bit of oil to come up, is this b/s or do you think I'm onto something?

 

Could be a broken oil ring or scored cylinder wall. Have you done a compression test to compare cylinders?