[TR] TR4 cut out under power

[Randall]

> This is negative ground car, so battery lead should tie to 
> neg post on the
> coil, right?

Nope, the neg coil post should be grounded by the points on a negative
ground car.  But having it backwards won't keep the engine from running,
just perhaps make it a little more difficult to start on cold mornings.

> Coil is OK, judging by ohm test. Installed new condenser.
> Checked the gap. No spark.
> What have I missed?

I would start by checking for spark directly at the coil, bypassing the
ignition wires and cap.  If you have someone to help, this can be done with
a pair of screwdrivers, one to stick down inside the coil tower and the
other to reach over towards the rocker cover.  

If no spark at the coil, roll the engine until the points are closed, then
check for 12v across the coil primary terminals.  Then open the points and
check for 0v.

If the points appear to be always open, check the flexible lead from the
dizzy side terminal to the points, as it can sometimes break internally and
not conduct even though it looks OK.

If the points appear to be shorted, then possibly you've pulled my old
trick, of fixing the original problem and introducing a new one by
installing the insulator wrong.  The wires go on the post first, then the
insulator goes on top.

There's also the chance that your 'new' condensor is actually bad.

Randall