From: Walt <firstname.lastname@example.org>
> Compression (rounded to the nearest 5) was 120,115,115,120 (1 to 4)
> All plugs were black and 2&3 were wet with gas when pulled
> Rotor, cap, and wires all checked OK
> Plug 1 had good spark, 2&3 no spark, and 4 weak intermittent.
>Bad plugs!! Had put new Autolite platinum in less than 2000 miles ago, but
>as soon as new Champion N-9Y's were installed, ran fine. Need to adjust
>the carb (Weber DGV conversion by DPO) but otherwise seems to run good.
>Any thoughts on why plugs would go bad that quickly? Wrong brand maybe?
'cause the compression problems are gunking the plugs?
Seriously, 120's are pretty low. I'll assume the engine was warm and the
throttle was open when you did the test. Your plug problems may be an
"effect," not a "cause."
Bob Allen, Kansa City