Things like that bug me as well Norm
I have had one with a HT lead that would earth on the cowl/block when the plug was in the engine, but would act fine when testing (I should get one of those spark testers).
And I have seen a blocked decomp valve line - but that was a clogged metal nozzle (where the hose connects to the inlet) on a G3 125cc.
And sometimes there is just one invisible problem that remains.
I have been trying to fix one of my whipper snippers - turned out that after all the stuffing around, it was a rotten (on the inside only) fuel line that kept clogging everything.
Ran good for 5 minutes after that, and then started bogging down again and expired. I was about to take the carby apart and I saw the problem - the bloody diminutive 250mL fuel tank was bone dry after only a half hour of tuning.
What hone do you find good? I was thinking about getting the small engine hone supercheap sells - but wasn't sure if it was much chop.
Regards
Tyler
