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Fuel Pumps/Ballast Resistors

To: british-cars@autox.team.net
Subject: Fuel Pumps/Ballast Resistors
From: Christopher Ball <triumph@io.org>
Date: Fri, 14 Jan 1994 16:20:21 -0500 (EST)
I wonder if the ol coors Beer can that leaks fuel so badly is having 
intermitent fuel delivery problems? It doesn't really sound like it, but 
let me relate this in case. On the Healey I have an electric fuel pump.
It seemed to me that my carbs were having float problems until oneday I 
didn't get any ticking when I turned the key. Then my daughter got in the 
car and it started !? Well, she was thrilled ,but I was puzzled. It 
turned out that the power line to the pump was wrapped around the rear 
axle to keep it high and safe. What happened was that the poor wire was 
flexing and stretching with the suspension. It finally gave way INSIDE 
the wire. Until I did a resistence and continuity check it looked OK. 
With Megan in the car the whole car lowwered enough to make feeble 
contact. On every bump it lost it. Odd. 
Now on the TR3A the pump is mechanical. This little beast played another 
trick that nearly caused disaster for one club member. The lever or 
tongue which goes into the block to operate the pump is hinged on a pin. 
The pin gave way over time and the lever was working on and off with 
nothing really holding it there. When the chap pulled the pump to check 
it the tongue stayed put and then nearly dropped into the engine!

Just a few thoughts in the matter.

Now, as for the ballaster resistor issue, of course a lot of our cars 
have none. Neither of the above cars for example. It might be a little 
harder on the points but it's one less thing to crap out, as anyone with 
a slant six can tell you. It was ALWAYS the dan B.R. when they wolud not 
start. I believe that the Lucas Sports Coil is ONLY for use in non 
resisted ignition actually. Remember, however ,that many cars have a 
resistive WIRE (usually pink) in the line from the ignition, bypassed at 
starting. It does have to be a block of something to be resistive.

Chris Ball



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