H distributor Scott Andrews

[Ted in NE]

I ran into the same problem with an H dist. As with yours it was running & quit, can't time rotor. Could get it to start & run short time after checking timeing, valve timeing ect. Took the distributor off. Replaced if with an old magneto off an H that had not been run for 20 years. It started right away & runs great. Have taken the distributor apart.No excess wear. Weights & cam are free, springs good. No loose or broken parts. When you turn the dist shaft to open the points the points just open when as you say the rotor is between 1 & 3 on the cap. Cap & rotor are identical to those on my 450. Please stay in touch. I am still puzzled have worked on many of these old tractors. Never run onto anything like this.

Ted

 

[Bob M]

Ted - I ran into a similar problem with an IHC pickup with a 304 V8. It suddenly began running very poorly. A full ignition tune up did not make it any better.

Only when I put a dwell meter on the distributor did I discover the point dwell was wandering all over the place. Turned out the upper distributor bushing spun so the distributor shaft was wobbling. This randomly messed point gap and the spark timing.

A "new" used distributor solved the problem.

 

[Ted in NE]

Bob, Thanks for the reply. Found the problem. The cam block on the spring loaded point arm is on backwards. Makes the points just break when rotor is BETWEEN 1 & 3 towers on the cap. Found an old set I had saved to compare it with. Hope Scott gets this message, had the same problem. Must be the new China made CNH points.
Ted

 

[teddy52food]

Not sure, but I think there is a difference between the 4 & 6 cylinder points. Maybe got boxed wrong.

 

[chuck craig in Socal]

Had that problem in one of my old packards. distributor wouldnt hold dwell, made new bushing for dist. Ran like new. CC