Hi all My brother has a america It keeps losing one cylinder He’s been told his igniter has failed I’ve tried to find one but keep hearing things about crank firing orders Does anyone know where to purchase a aftermarket new igniter? Cheer all in advance
The 270 degree motor has an ignition coil (£60) for each cylinder. So who told him the igniter has failed? Is it the same cylinder or variable? Furthermore, it could be the pick up coil ((£40 crank position sensor) on its way out. Before shelling out £220 I would want a better diagnosis. The coils are notorious for going intermittent before total failure and can usually be checked for resistance values with a £10 multimeter...... Is it carbs or efi? https://www.triumphtwinpower.com/triumph-america-speedmaster-carb-ignition.php
He took it to a local bike shop I mentioned pick ups but the shop said the pick up does both cylinders so if the pick up fails you lose both cylinders It’s always the same side and we’ve changed the ignition coils over whilst it wasn’t firing and the good coil wasn’t firing Cheers
Ok. Do both coils ignition on have battery voltage at the low tension +ve terminal ? If the non firing coil doesn’t it would point to the igniter. Carb or efi?
I had a duff coil on my speedmaster (same engine and electrics) but if you swapped them and same result could ponit to igniter, but as said by Callumity you need to check all the other componentsfirst i.e. plug connectors etc. I had a remapped TTP igniter on my speedmaster and it was a big improvement on the OE map.
That feed is from the igniter that chops it when it should fire..... live to other coil points to internal igniter fault.
Try some contact cleaner on the Igniter connector first and if still not there, try a resistance check from coil feed back to connector, pins 8 and 15 feed coils colours are yellow/black and yellow purple.
Cheers for quick response I’ll try that later when my brother gets in from work Theres no doubt about it this is the best forum I’ve ever been involved with Cheers all
