I don't know much about the PI, but I had the same problem a while ago
with carbs and it was fuel related.
Does the PI have any kind of filter or screen in line? Could it be debris
in the fuel system or a partial clog?
Are you running braided lines? They can deteriorate inside. Do you run a
pressure gauge and if so, what does the presure do? What happens if you
switch off the fuel pump (I'm assuming it's electric) for a couple seconds ,
then switch it back on?
A wise man once told me that about half of ignition problems were actually
fuel related. Or maybe it was the other way around; I'm getting old and
sometimes forget! Either way, check all possibilities.
Good luck, Bill----- Original Message -----
From: "Chuck Arnold and/or Kathleen Kelley" <triosan@gmail.com>
To: "Friends" <fot@autox.team.net>; "Triumph" <6pack@autox.team.net>; "TR
list" <triumphs@autox.team.net>
Sent: Monday, March 22, 2010 12:35 PM
Subject: [Fot] Got a problem with the race car, need advice
> I have a petrol injected TR6 race car. It has a Pertronix distributor
> [the whole distributor, not just the points replacement in a stock
> dizzy]. I also have a Crane ignition. First time out with the car
> this year. Drove a few sessions Friday, then more on Sunday. First
> two runs Friday went OK as far as the engine goes [had suspension
> issues, but worked those out]. The third session was longer, and over
> the course of it the car started to cut out under WOT at about 4500 to
> 5500 RPM. It did not do this always, but most of the time. The tach
> would swing wildly. It felt a little like a rev limiter [which is
> setto 7000 RPM],but only for an instant. I did some investigating and
> found that I did not have the distributor fully locked, and it had
> "walked" to quite far advanced. I though putting it back to where it
> belonged would fix the issue. IT did not. At the Sunday event it
> just got worse, so I only got one long session in.
>
> So, I beleieve there is a problem with either the Pertronix or the
> Crane. I am asking for advice from all the TR groups I belong to.
> What do you think, and how should I diagnose it? I do have a dual
> point Mallory dizzy I can install -- but may have no way to check out
> if it helps until race day.
>
> OR, do any of my Seattle area race buddies know of a road I could run
> a couple of test on [6K in second will do it] \!
>
> Thanks,
>
> Chuck
>
> --
> Chuck Arnold and Kathleen Kelley
>
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