Bad rotors have been a problem for awhile now. Petronix has had it's
share of issues too but I wouldn't blame it or change it until you try
a "good" rotor. The bad ones usually are ones with a rivet if memory
serves.
Bud Rolofson
71TR6 CC57365 (Good 6)
66TR4A CTC57806 (The Wreck-Almost parts)
66TR4A CTC57529 (The Project)
71F-250 Camper Special (Triumph Support Vehicle)
Z-50A Hardly Davidson 1977 Honda Mini-Trail Bike (Triumph Pit Bike)
levilevi@comcast.net
On Feb 24, 2012, at 9:56 AM, G.D. Huggins wrote:
> All,
>
> I have the final update from my first breakdown some weeks back.
>
> As a reminder, I was on the highway coming up on some slower traffic.
> So, I turned off the OD, changed lanes, got back on the gas then
> BANG.. a loud
> noise and no revs.
> I got it towed home and began troubleshooting..
>
> Car would start, but ran super weak. Giving it any throttle would
> kill it.
> Fuel looked good.
> Spark looked good.
>
> So, I checked the timing, and sure enough, the dizzy rotor was way
> to the
> right when #1 was TDC.
> It is supposed to be "pointing" directly at the #1 plug hole.
> So, I have a mechanical issue that is causing the spark timing to be
> way
> behind..
>
> My theories were a) timing chain jumped, or b) dizzy gear jumped..
>
> Turns out both were wrong.
>
> What happened was that the rotor broke, which gives me mixed feelings.
> I am happy that it turned out to not be a jumping issue, but angry
> because the
> dizzy is a brand-new Pertronix dizzy I got from Moss, with just 1000
> miles on
> it, and it seems a bit too early for it to have issues.
>
> Any clue why a rotor would break? Something tells me to check for
> vibrations
> in the dizzy shaft.
> I am going to return to the original point dizzy just for giggles as a
> comparison.
>
> Any thoughts??
>
>
>
> Cheers,
>
> Guy D. Huggins
> 1965 Triumph TR4A
> CTC 63569LO
>
> Online project diary at http://www.genfiniti.com/triumph
>
> ** triumphs@autox.team.net **
>
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