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Re: electronic ignition

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Author  [Modern View]

10-29-2012 05:30:43

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Just out of curisosity is the tractor still 6v or is it 12volt????

Not sparking on one cyclinder consistenet with your diagnosis would point to a bad distributor cap or rotor. Possible worn distributor shaft bushings. I'd try a new cap and rotor first.

Edit: Since it has e-ignition then worn distributir bushings would not lilely cause the problem.
This post was edited by PackardV8 at 06:07:02 10/29/12.

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Al Clark

10-29-2012 11:42:58

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 Re: electronic ignition in reply to PackardV8, 10-29-2012 05:30:43  
It's a 12 volt system. I switched spark plugs and wires, #3 and #4 cylinders, still erratic on #4. So wires and plugs seem ok.
I think the problem is with shaft play which I just measured at 0.005" or more.

Distributor cap contacts look rough, particularly the one for #4. It also apparently moves up and down a quarter of an inch because the wear on all the is about that long.

the cap and rotor are fairly new. I"d say much less than 100 hours on them.

I understand this distributor, which I think is original has a bushing at the bottom of the shaft and a ball bearing at the top.

I put the electronic ignition in because I was getting two spark plugs firing and two not because of unequal opening and of the points. In other words, I couldn"t the timing right. It solved that problem, but still needs good bearings and shaft to distribute the spark effectively without chewing up the rotor and cap contacts.

I know I can buy aftermarket distributors. Where can I get mine rebuilt and how much would that be?

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