Coil question

[stopintime]

One of my coils is attached to a frame welded bracket under the seat / side plastic cover.
As far as I can see there is only one bolt.

My problem is that this bracket broke off, not off the frame, but right in the middle of the bracket.
I'll have it welded back on or make a new bracket.

When it fell off, it rubbed against the wheel or chain and the small wire connector was pulled.
That's when the one cylinder stopped firing and I discovered it.

It's now zip tied back on.

Is it possible that the coil contacts the frame in such a way that it causes minor misfires?
Don't know much about coils or how their electricity comes and/or goes...

[Speeddog]

Are you getting a misfire now?

If the coil was dangling by the wires, it may have partially broken a wire, or perhaps the spark plug lead is not fully engaged.

[stopintime]

Are you getting a misfire now?

If the coil was dangling by the wires, it may have partially broken a wire, or perhaps the spark plug lead is not fully engaged.

I'm not sure it's even a misfire. Just a slight disturbance which I can feel through the mid range on medium throttle openings. Doesn't mean it's not there at all times, but that's where I can feel it. Is the coil depending on a good ground? Not sure I have that.

[DarkStaR]

I wouldn't bother reattaching the bracket, as with it removed, it'll give room for an s4r shock...but as you already replaced the rear shock, that doesn't matter.

Still, have a bracket made to fit it under the seat to clean up the left side.

Just do some rust prevention on the frame.

I wish mine would just fall off.  

PS.  Having it welded on would probably ruin more frame paint.

[stopintime]

That's a good point, because I am having my shock rebuilt with an external reservoir.

Is this bracket the only thing obstructing a piggy back reservoir?

[Speeddog]

An S4R shock will hit the bracket.

In addition, the S4R frame is dimpled there for clearance.
Folks here have fitted S4R shocks to S2R800 without dimpling the frame.
YMMV.

Coil is not depending on grounding through the bracket, the front coil is mounted to the plastic airbox, and is not grounded.

[stopintime]

Maybe the coil is grounding where it shouldn't then?

My WP shock probably has a different piggy back solution, but it might be a good idea to clean up that area and make room for something....

[Speeddog]

I'm not sure it's even a misfire. Just a slight disturbance which I can feel through the mid range on medium throttle openings. Doesn't mean it's not there at all times, but that's where I can feel it. Is the coil depending on a good ground? Not sure I have that.

Did you check both the 2-wire plug and the spark plug wire?

That area isn't very 'clean'...

[stopintime]

The 2-wire plug was ripped out and looked beaten up, but I was able to put it back and had a good day at the track. It might have become wet later, or the plug wire is loose. I'll check tomorrow.