I am trying to help my neighbor with his 1990 Westy.

He says it runs fine for a while then dies and won't start. When it dies,
the tach drops to 0 if he is driving. It cranks and cranks but won't fire.
(I would guess no spark if the tach is dropping to 0 as it dies.) After
sitting 20-40 minutes it will start right back up and go for a while again.

I noticed his hall sensor plug (I think that's what it is) going into the
distributor is broken and flopping around. Seems to me this would be a
problem when cold as well as warm.

I am an air cooled and diesel guy. Any help on this?

He is not on the list, you can reply to me.

Thanks,
Myron Lind