Spec is 530 ohms +/- 10%, so 690 a bit high, but there's no real relationship there with engine load? Typical failure symptoms are everything stops when engine warms up, then ok again when cool.

 

Thanks Mike. The wire had been pinched when it was installed and the reading is definitely high but it`s not looking like that is the problem. I`m leaning towards a coil breaking down under load, which is going to be hard to confirm unless I can find a shop locally with a load tester.

 

The ign coils' failing is more rpm related than load as such. Misfiring up to 3k, sometimes a little up to 4k, then fine above that.

A timing strobe light - I use an inductive pick up 12v Gunson type - will show up any coil misfiring by uneven flashing. (In theory that could mean a plug/lead issue, but they are less common & parts can swapped between cylinders to pin it down.)

 

The bike runs fine on the bench but when you put a load on it, ie try and ride it, then it a cylinder drops out. So it`s hard to even figure out which cylinder it is.

I`ve had the carbs apart and checked them thoroughly and compression checked each cylinder, I`m convinced it`s an ignition fault.

 

Still could be a coil & I would expect bench test with a strobe light to show it.

 

It doesn`t. The bike runs perfectly on the bench, there is no misfire for the light to show. I`ll post more details when I`ve had the coils tested.

 

If the spark is weak it could be getting blown out and causing the miss and I dont think the light will show that. Could be a coil but usually a wire or plug. One of the exhaust pipes should smoke a little from the unburnt fuel when it happens. Could give you some sort of direction to go.

 

Problem solved. One of the local shops, Hinterland Motorcycles, specializes in fixing and selling cheaper older bikes (it is nicknamed 'sh!tterland motorcycles') they have a load tester, so I took the coils off and took them in to test, number one coil was failing under load.

I work in a Triumph dealership so I can can get a coil at cost price but the genuine ones are still expensive. I`m planning to sell my adventurer once it is running perfectly so I don`t want to spend heaps, anyone know the best place for an aftermarket replacement for T1290046?

 

actually i have known and raced with paul who owns the shop and he is a top bloke who will go out of his way to help and some riders cant afford new ones so he fills a hole in the market selling ****ters as you call them funny how your genuine dealership couldnt test it ay

 

Uneven (strobe) flashing when an ignition coil is weakening/failing.

All or nothing of course in the usual hot/cold fail mode of the pick up coil.

 

As I said, in my particular case a strobe light was no help, which is why we had to use a load tester to replicate the fault. They tested OK with a multimeter, too.

I`m lucky I found a shop with one, I work in a large Triumph/Ducati main dealer and we don`t have one, neither did any of the other motorcycle main dealers in the area.

They are $350 on ebay but it is one of those tools that you could put in your home workshop and never ever need again. So, IMHO, its far easier to pay $50 to get a shop to test them.

 

don't own a soap box ha ha i had just read the other thread about the guy in the USA who had owned the legend from new and the genuine dealer told him it couldn't be fixed?? then read this so i guess i was i bit pumped
i am in my 50s and work in the industry for 25 years (with paul in the early years ) have just finished putting saxon pistons (980 ccc ) in a TB motor i had spare and am running it in the legend ( all work except boring the cases for bigger sleeves done by myself ) lets face it these bike are pretty easy for a mechanic to work on . I had to go to one of the two genuine dealers down here ,when i went in i asked for a tappet cover gasket for a 99 legend and the guy behind the counter said ,and i quote whats a legend ,needless to say even though it was a 4 hour round trip i turned around and walked out ! ended up getting it of sandy at triumphant in the UK ,because peter Stevens the importer for Australia didn't have one and wanted me to wait 3 weeks for one ,sandy got it to my door in 8 days at close to half the price !!
i am probably getting old and grumpy but if i go to a triumph shop or any other brand for that matter i expect the bloke behind the counter to know his models of the dealership he is working for . When i worked in a genuine dealership like yourself yeh we took parts of bikes to test other bikes that's normal , never took new electrical parts out of spare parts though but we still had coil testers and even a spark plug tester old school i guess
all i can say is thank f--k there are still shops like Paul's ( hinterland motorcycles ) around !! glad you got the adventurer going
hell i think i just fell of a box