Steve,

Thanks again, but unfortunately the pot is totally fried in the old one. At zero position, most of the time on 1 & 2 I see infinity! If I move the plate up and down a bit I can sometimes get a reading, but it more often than not is around 5-6K and when I do get a reading it varies constantly even though the plate is sitting at zero! Not good. It also ranges in value when deflected to over 16K!

I just tested it again now, and I saw 13K at idle - LOL - then after a few pushes infinity. Unfortunately I can't use this one as a base.

I've read you need to have the fuel distributor hooked up, fuel pump bridged to get pressure in the fuel distributor when testing this. Not sure how on earth that works. I guess the fuel distributor control tube erm or whatever it's called must drop a little under pressure so therefore you can't zero the thing without pressure..

hmmm..

Neil