Stick coil (s) in need of urgent therapy

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sykospain
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Stick coil (s) in need of urgent therapy

Postby sykospain » Mon Jun 11, 2018 12:01 pm

Went shopping on it this morning and suddenly whilst pootling along the beach road, I had the dreaded "complete-cutout-dead-engine" effect. Which wobbles you as the motor immediately comes to rest.

Each time thereafter I simply restarted after a coupla presses of the button whilst coasting along; fortunately there was not too much tourist rubbernecker traffic yet, bimbling at 30 kph along the playa looking for somewhere to park, so no drama.

Last week when he did the throttle and injector balancing two-step, mechanic José pointed out that he had a suspicion of a stick coil on its way out with noticeable corrosion on it.

Anybody sourced a good-priced new stick in the EU ? I know they're an arm-and-a-leg.

AL in sweltering Andalucía. 26 degrees in dead-still air at noon today.
This is the list of people I'd trust with my bike.

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Lurchio
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Re: Stick coil (s) in need of urgent therapy

Postby Lurchio » Tue Jun 12, 2018 9:55 am

Al, check 'Motomike' based in Alicante (website). Does loads of stuff for bmws. I have used them before. Good price, good service.

andys
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Re: Stick coil (s) in need of urgent therapy

Postby andys » Wed Jun 13, 2018 7:34 am

One of my stick coils gave up recently just after I bought the bike.
R1200CL.
Corrosion was definitely the issue.
I guess it's a real moisture trap in there.
I paid £100 for a new one from my BMW dealer.
From now on I'll be regularly taking them out for a wipe over with WD40.

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sykospain
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Re: Stick coil (s) in need of urgent therapy

Postby sykospain » Sun Jun 17, 2018 4:05 pm

Yep, a new stick coil popped into the left-hand cylinder-head from a nearby R1200GS awaiting service in José's workshop solved the bad-running problem totally in my bike.

An instant goodbye to the previous occasional hunting, hesitation, backfiring and the general feeling that something within the past few weeks suddenly wasn't right with the fuel supply, injection, maybe even HES wiring, whatever. And this after a full tappets-check, throttle balance, etc.

As someone else says somewhere on another boxer bike forum :-
"Bad running motor ? - it's ALWAYS the stick coils.."

The new Beru stainless-steel-sleeved coils cost 120 snoojits each. They claim to be more resistant to overheating and corrosion effects that break down the coil windings' integrity.
We'll see.

But this stick-on-plug design, trapped inside an extremely hot, tight-fitting tunnel leading to the spark plug, clearly demands a high spec item. so maybe that's why they're ten times more expensive than a bog-standard ignition coil.

Some riders have converted their BMW boxer to externally-mounted coils by Motorcraft specified for a Ford 3.5 liter pickup sold in the USA. Much, much cheaper items.
But can you be bovvered ?
Here's the 'Motorworks' replacement item :-

Image

AL in s.e. Spain
This is the list of people I'd trust with my bike.

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Galactic Greyhound
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Re: Stick coil (s) in need of urgent therapy

Postby Galactic Greyhound » Sun Jun 17, 2018 4:52 pm

Is a 'snoojit' a new crypto currency? :lol:
Ced.

R1100RT 1996.
Sent by Boson Quantum Transmission from the Starship 'Galahad'.
http://www.researchgate.net/publication ... ing_bosons" - It works!


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