[TR] Electrical Gremlin

TERRY SMITH terryrs at comcast.net
Thu May 30 08:45:21 MDT 2019


Sorry, everyone.  I meant to say the floats themselves have no fuel, meaning no pinholes causing flooding.  

> On May 30, 2019 at 2:29 AM Greg Lemon <grglmn at gmail.com> wrote:
> 
>     To focus on what Randall said "float bowls have no fuel in them" Car won't run without it, do you have a clogged line?  I have had this happen on several cars, fuel flows when you turn the car on, whatever is restricting (usually chunks or tiny flakes of rust) is drawn to they line intake on the tank or other point of restriction and fuel stops, sometimes runs for a few minutes, sometimes ten or 15.  You stop for long enough it will start again and repeat the cycle.
> 
>     Just a thought.
> 
>     Greg Lemon
>     TR250
> 
>     On Thu, May 30, 2019, 7:58 AM Randall < TR3driver at ca.rr.com mailto:TR3driver at ca.rr.com > wrote:
> 
>         > >         > Jets centered, float
> >         > bowls have no gas in them,
> > 
> >         A typo?  Float bowls should have gas in them, engine won't run without gas.
> >         If the bowls are running dry, you've got a fuel delivery problem.
> > 
> >         > So question.  When one has done the Pertronix modification (I
> >         > replaced that too), the generator control is wired
> >         > differently.
> > 
> >         Not that I know of.  I installed a Pertronix, had it running for months,
> >         eventually removed it, no changes at all to generator control.  The
> >         Pertronix needs exactly 3 connections on a TR3A, ground through the point
> >         plate (which can be a problem), power from the hot side of the coil, and the
> >         output to the ground side of the coil.
> > 
> >         > Second question, I can't really tell from the wiring diagram
> >         > whether the generator or the starter could be stealing power
> >         > from the ignition system.
> >         >
> >         > I'll be back at it tomorrow, but any thoughts?
> > 
> >         Instead of replacing everything in sight, try doing some tests.  Temporarily
> >         connect a 12v test light from the coil hot terminal (which should also feed
> >         the Pertronix) to a good ground on the engine.  Start the engine, watch the
> >         light.  It may dim a bit while cranking, but should stay full brightness
> >         once the starter is no longer engaged.  If it dims when the engine dies,
> >         you've proven an electrical problem; which you can now go looking for in a
> >         similar manner.
> > 
> >         If the light stays full brightness, though, either the Pertronix is flaking
> >         out, or the problem lies elsewhere.  I would look next at the ground wire
> >         for the point plate, as they flex in service and sometimes break inside the
> >         insulation.
> > 
> >         -- Randall
> > 
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