Tom Tweed writes:
>Now I forget if you have already checked this, or if you have a stock
>distributor set-up aside from the electronic ignition, but it might
>be worth a look at your vacuum retard set-up, assuming you still have
>one. If you do, and it goes thru the thermostatic switch in the top
>radiator hose, you might try by-passing that switch; that is, run the
>vac line (checking that it is not plugged or cracked while you're at
>it, btw ) directly to the bottom of the rear carb, and see if your
>performance improves, or you get less back-firing upon deceleration.
>p.s. I'm assuming you have the vac line set-up as in TRF catalog plate BM.
That's correct, I do have the vacuum retard set up as per OEM specs. I
have no info on the condition of the thermostatic vacuum switch. Your test
may be helpful...
And Douglas Mitchell Writes:
>Have you checked the plug wires? You mentioned in an earlier post
>that you closed up the gap on the number 1 plug and that seemed to
>help, this could point to breakdown of your plug wires.
I have not checked the plug wires, Doug. I would be glad to do so... do I
simply need to test the impedance through each wire with a multitester? Do
you know the required spec?
I would also add that the wires are Allison silicone wires, and they
certainly do not have more than 30,000 miles, and possibly as little as
20,000 miles on them. (for some reason the new wires don't show up in my
service record!!) I wouldn't THINK that they would be the problem, but
they should be easy to check! Thank you for the suggestion!!