[TR] TR3 stignition problem

[levilevi]

Corey,

Sounds like a slight but significant flooding problem.  If its cold and starts
OK (is that with or without choking) without choking then its getting too much
fuel.   Which is apparently too much once it gets a bit warmed up...so it
stalls...until it cools off enough to need the extra fuel for another cold
start.  Its probably either junk in your float chamber holding the fuel needle
valve open or you have too much fuel pressure into the carbs.  If you have an
adjustable clamp of some sort (I used a small ratcheting clamp) to use
temporarily you can check pretty quickly to see if its a fuel pressure issue.
Put the clamp on a rubber fuel line between the fuel pump and the carbs and
slow the fuel flow...but not close it completely off..or of course it won't
run at all.  If that's it then a pressure regulator may be the answer, but
double check by putting a T connecter in the fuel line and checking it with a
fuel/vacuum pressure gage.  If its not that then I'd clean the float chambers
out and blow some air up around the needle valve while working it up and down
to clear it.  Pour the gas from the float chambers into a white bowl to see if
you have something other than fuel in them.

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)
  ----- Original Message -----
  From: Corey Sherman
  To: triumphs at autox.team.net
  Sent: Tuesday, August 26, 2008 8:46 PM
  Subject: [TR] TR3 stignition problem


  Hello everyone,
  Frustrated as can be here... experiencing an intermittent
  ignition/running engine problem: Occasionally the car starts, but after
  a few minutes running it stalls and dies. Can't start it again for
  another 20 minutes or so. I thought it was vapor lock, but fuel flows
  freely. And so I began a series of diagnositics to  no avail.

  Check the carbs - fuel in the bowls, jets working - ok
  Check the fuel pump - flowing, and pumps when cranking - ok.
  Pull plugs - check gap, inspected mix (rich/lean), and cleaned -ok.
  Wires - inspected spark and replaced with new wires - ok.
  Battery - replaced with brand new, negative ground - ok.

  Distributor - Pertronix installed (may be problem*** - tech support no
  help
  - ordered points to convert back. Unit is 16U-12v, D-57 2, D-25)

  Coil - ok (using Lucas Sport; swapped with another - no difference).
  There is a unit between the ignition switch and coil - believe it is a
  relay for the ignition switch assembly.

  Any suggestions would be appreciated.
  Thanks
  Corey
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