How to troubleshoot spark plugs on a pelican?

Wires could leak the “spark” to ground therefore diminishing the spark that goes to spark plugs. Putting tape on the wire to prevent leak won’t help. Replace the wires, they are cheap. Resistors (plug/distributor caps) need to be measured, they should all be in +/- 10% ohm range of each others (2k ohm on each end is normal)

Why is my carburetor not working on my Pelican?

If the breaker points are moving just fine when moving with hand, the problem could be the vacuum unit. When aging these usually break and should be replaced. The carburetor could be getting dirty and clogged so the mixture is not right, if possible check the jets and emulsion tubes that they are clean.

Why does my Pelican ignition make a squealing sound?

First thing to check is that the ignition box is making squealing sound while power is on, this indicates that the high power voltage is produced. If there is no sound check that the ignition box is getting correct voltage (Check the manual which terminal) If the voltage is much under 12V the ignition box will not sound “healthy”.