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Coil Chaos

Started by Troyskie, April 08, 2017, 06:00:41 PM

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Troyskie

Morning all.

Well, after a hectic last month, I've finally found (taken) the time to see what was ailing Yummy.

To put you in the picture, I had a coil/plug/lead/cap issue which was intermittent and eventually across all cylinders.

On the trip up to the rally, after a day of light rain, I was running on two cylinders. Pete, Alf, Johno & myself solved it (well mostly Pete, thanks again buddy).

The roadside solution was to snip back the ends of the plug leads. The bike ran ok, not 100%, but still more than good enough to put it down to fix at home and carry on.

On the return trip I began to lose the other coil cylinders (WTF??!!). Ok, same solution to that, snip the leads back & vroom, off I go. Another couple of times, and I finally get home.

Fast forward one month to today, and (after checking with some more knowledgeable people about new coils etc.) I start to pull the bike apart to get to the coils (basically seat & tank off).

On removing the coils, I finally get to the unplugging part and BINGO!!!!  :shok: These are not FJ coils and the connectors are pretty bodgy, one wire was loose!

On a trip away with SWMBO earlier in the year I made a mad dash into a wreckers and managed to scrounge all the FJ coils they had (ended up with a couple that aren't FJ, but would work). I did a quick rummage through these sets of coils and found ones with the correct connectors.

I'm about to fit them off & flash Yummy up.

Here's some pics of the PO shenanigans, and one of the replacement coils.

Check out the connector pins and the loose one still stuck in the plug.

Troyskie
1984 FJ1100 Ms Effie brand new :)
1984 FJ1100 Pearlie, stock as.
1985 FJ1100 Mr Effie 647,000K and still running hard.
1985 FJ1200 'Yummy' takes a licking & keeps on ticking
2013 Trumpy Tiger 800, let's do another lap of Oz

After all is said and done, more is said than done :)

red

Troyskie,

I'm guessing that you are having enough fun already, but I saw an FJ conversion to coil-over-plug here, with only low-voltage DC going to the spark plug locations.  They were R1 coils, 2009~2011 vintage, and Ebay seems like the best source for them in the USA, on-line.  The OP got the spark plugs' wiring harness from the R1 also, making it a plug-and-play project.  It was a super-clean mod, when finished.  I plan to make the change at the first excuse, here.    :biggrin:   
Cheers,
Red

P.S. Life is too short, and health is too valuable, to ride on cheap parade-duty tires.

Troyskie

Thanks Red, I think I'm going to feel a little moditis coming up.

A great result! No money spent, fix done with all shops shut. Yummy purring like a big kitten.

This win motivated me to fix  other bits, side stand spring, yeah spare in my dirty bits box. A couple of other niggly things. Feeling good.

Then, with win after win, I tackle Effie. Fix the broken instrument mount. Replace blown bulbs (quite a few), then a general going over.

A quick wash and both girls are now sleeping. I can tell their dreaming, ready!

Time for a beer  :drinks: a most satisfying Sunday
1984 FJ1100 Ms Effie brand new :)
1984 FJ1100 Pearlie, stock as.
1985 FJ1100 Mr Effie 647,000K and still running hard.
1985 FJ1200 'Yummy' takes a licking & keeps on ticking
2013 Trumpy Tiger 800, let's do another lap of Oz

After all is said and done, more is said than done :)

oldktmdude

   Troyster, one of those bikes must be due for a ride down south. Let me know when you've got a half day free on a weekend and we'll have a coffee somewhere.
   Regards, Pete. :drinks:
1985 FJ1100 x2 (1 sold)
2009 TDM 900
1980 Kawasaki Z1R Mk11 (sold and still regretting it)
1979 Kawasaki Z650 (sold)
1985 Suzuki GSXR 400 x2 (next project)
2001 KTM 520 exc (sold)
2004 GasGas Ec300
1981 Honda CB 900 F (sold)
1989 Kawasaki GPX 600 Adventure

Troyskie

thanks Pete, I now have a plan for a ride!
1984 FJ1100 Ms Effie brand new :)
1984 FJ1100 Pearlie, stock as.
1985 FJ1100 Mr Effie 647,000K and still running hard.
1985 FJ1200 'Yummy' takes a licking & keeps on ticking
2013 Trumpy Tiger 800, let's do another lap of Oz

After all is said and done, more is said than done :)