[TR] Breaking up underload

[Tom Note]

Alex:

Our TR6 experienced similar symptoms with a bad condenser.

Tom

----- Original Message ----- 
From: "Alex" <ambritts at bellsouth.net>
To: "Triumph List" <triumphs at autox.team.net>
Sent: Sunday, April 13, 2008 6:31 PM
Subject: [TR] Breaking up underload


> Hi to everyone,
> Quick question on my 59 TR3A. I have been having intermittent
> misfiring/sputtering when the car is giving full throttle under load. When
> stationary you can rev the engine and it climbs right up the tach. No 
> problem.
> Last week it ran so bad that the carbs were ice cold and generating so 
> much
> condensation that it stalled the engine with water. The carb domes and 
> bodies
> are 85-90 degrees. It has a heat shield on it. This weekend I did the
> following because I had the parts. Replaced the points, reset the ignition
> wires, changed the rotor, changed the coil (new), reset the carbs, and 
> timing.
> On start up the car runs great. After about 5 minutes, I start to develop 
> the
> sputtering when giving it gas. The car will run at 60-70 mph as long as 
> you
> don't give it excessive gas. It acts almost like it is starving for gas or 
> has
> water in the lines. Added some gas line antifreeze, no change after about
> 12-15 mile test run. Did the gas flow check, cleaned out the lines all the 
> way
> to the carbs, inspected the diaphragm in the mechanical pump, no leaks in 
> the
> fuel line. Removed an inline glass fuel filter to eliminate a possible
> restriction there. The car runs at 178 degrees at the sending unit. Gauge
> reads a little more. Checked all the plug and coil wires. Pushes a little
> black smoke (running rich-needs different needles). It is running 
> considerably
> better then last week. When standing still after all this test running, 
> you
> can give it gas and it climbs right up the tach. No hesitation at all.
> However, this continues to be  a stumper for me. Any suggestions?
> Alex Manzo
> 59 TR3A
> 72 TR6
> _______________________________________________