New2Me 1961 M37

[NDT]

What can happen with ignition coils is that the copper windings inside can have good continuity, but the insulation has broken down, allowing the high voltage to jump to ground inside. A multimeter does not have sufficient voltage to test for this breakdown. You would need an expensive instrument called a “megger”.

 

[Txsrooster]

What can happen with ignition coils is that the copper windings inside can have good continuity, but the insulation has broken down, allowing the high voltage to jump to ground inside. A multimeter does not have sufficient voltage to test for this breakdown. You would need an expensive instrument called a “megger”.

I'll bring it into work and have the electricians megger it...thanks for the tip.

 

[John Mc]

What can happen with ignition coils is that the copper windings inside can have good continuity, but the insulation has broken down, allowing the high voltage to jump to ground inside. A multimeter does not have sufficient voltage to test for this breakdown. You would need an expensive instrument called a “megger”.

YEs. An ohmmeter might tell you that a coil is bad, but it can't tell you whether it's good.

 

[Txsrooster]

Ok quick question. When shifting from 1st to 2nd there is no issue, but going from 2 to 3rd it bogs the engine down pretty hard. Any suggestions on what can to look at to see why? Granted I haven't gotten her onto the road much more than turning around, so haven't tried 4th gear yet.

 

[Redleg130]

I am not a mechanic, but this is what I would start with

Compression test at some point, but maybe you don't have enough speed going from 2nd to 3rd? These trucks are a bit finicky, took me a bit to get used to shifting them (hopefully) appropriately.

 

[NDT]

Truck should get to rippin' in all gears. Lots of possibilities: carb issues, ignition timing, engine missing, brakes dragging, low tire pressure ...

 

[Txsrooster]

I poured some sea foam in the tank and will see if running that through to see if it clears up.