The Triumph 2000 / 2500 / 2·5 Register Forum

Hello Trevan,

good result, now put the old rotor arm back on and see what happens.

The reason I say that is if you replace two or more components at the same time you don't know which of the replaced items were faulty? Of course, on the other hand, there is nothing written down that you must only have just one faulty component but that gets much more complicated

Alec

Hi Alec

I now have four black and one red used rotor arms in the boot most of which only have very few miles on them (at least one has less than a mile). Right now I want to concentrate on the view down the bonnet rather than the view under it but you are right and I will do that one day soon. Got a feeling they are probably all fine...

Trevan

Suspect coil then?

Hello John,

no, not necessarily its easier to change a rotor arm.

Alec

Really Alec, two clips and pull roter arm, push on new one replace cap and two clips again, versus pull off three wires and push on three wires!!!!????

Hello charles,

I'm sorry but I don't follow the reasoning, I'll remove a rotor arm much quicker than you can change a coil any day of the week.

Alec

Alec, you do not need to bolt the coil on to check it! Have done many a mile with a 'slave coil' strapped to something so it doesn't fall down.

Sounds like a challenge for an F1 style pit-stop race to me

John - it might well have been the coil but it was the second new one tried and I think the problem was with the (now bypassed) ballast resister circuit. Against that, I did put a new ballast resister on before trying the 12v coil. Or I might have had 5 duff rotor arms in a row...

[quote=

Or I might have had 5 duff rotor arms in a row...[/quote]

There might be more truth in that than you think!!!

Dont keep fafing about with rotors there a simple test
remove dizzy cap unplug HT king lead and hold 10mm above the rotor
get the ignition on and have the engine cranked over ifna spark jumps from the lead to the rotor its stuffed and its passing ht to earth, if it doesnt spark then its fine

involuntary stops are often the old favourite of floating debris or slivers of fuel hose which block the back of the float needle valve, once stopped the pressure drops the debris flats back and you start again soon to stop,, best to remove the valve
and pump out some fuel into a jar see what you catch
pete