"smf" wrote in message
...
I changed a bad probe on one cyl. My Hanger mate and I had about 8
spares.with very little time. I tried 6 of these and the same thing
happened. . When I snugged it up to the exaust pipe it would read 76..If I
took it out and put heat to it it worked ok. I did this to 5 or 6 and the
same thing happened. As soon as I snug it up it would not work. I can't
figure out what is happening. I know all the probes can't be bad .


any ideas

Try starting your engine after you install them. (GD&R)
--
Jim in NC