pickup coil

( definitely ) not defiantly
Got the gunk cleaned out and wiring and sleeving is intact and in it's place.
I'm going to have to take the wiring apart and check it out like you recommended

 

I was messing around with the top pickup coil and now I'm not getting a reading like I was.
I had the screws loose from before so I messed with them a little.
Now I cant get it to short out again. Weird!

 

magenetics are wierd

 

Yes they are, but they don't do that.

I will assume (in a good way) that moisture migrated into one or both pickup coils via the wires and you have an internal fault do to corrosion.
Replace the pickup coil assembly.

 

his picture of his base plate and rotor was very bad lots of moisture was in there

 

Ya. It looked like there was a sub-aluminium lake in there.

 

Well I found some used ones. I wonder if these would match up? They look the same.
0ff of these bikes.
82 XJ 650
82 XJ750
85 XJ 700

 

Both 82's but not the '85.

http://www.yamahapartsnation.com/oemparts/p/yamaha/5g2-81671-10-00/base-pickup

and,

 

yea that's awesome!! I'll still need the coils though right?

 

The pickup coils are part of the assembly. You can't buy them new anymore. The link is just to refrence what models of XJ to look for when you search for the used parts.

 

okay cool. Thanks!

 

the pickups from1982-84 XJ650 Maxim: 650 ohms +/- 20% = 520 ohms to 780 ohms acceptable range
have the same specs

maybe they would work anyone have a junk pick up for a 82 to 84 650 I can test this out with? want to check size fitment

I do have a base plate and rotor for you

 

Cool! Thanks XJ550H

 

TCI tests fine.

are the pick up still shorting to ground?

 

Yea off and on. When I turn the motor over sometimes it does and other times it doesn't .
I'm thinking of changing some stuff out on it
Will the painted screw that's holding the indicator have to be set a back certain way?
I'm guessing it's for finding TDC

 

The pick ups can be removed without disturbing the pointer. Yes, it's used to find TDC to install the cams/chain and to install the tensioner at C.

Gary H.

 

Yes it will. Yes it is for indicating TDC. Do you have a dial caliper? If not a wooden dowell will do. Find TDC via the top of the #1 piston (through the sparkplug hole), then set the indicator to the T mark on the ignition plate.

Of course you don't have to touch it at all to remove the ignition plate, so....

 

Thanks, that's good to know.
I had just glanced at that part and was thinking I would have to
remove it.

 

Well I had spark for a minute.
And then I disconnected the TCI and reconnected it.
Now I'm not getting spark again.
I put new ends on the ground and red wires to the TCI but that didn't help
Good news is the coils are good.
Just need to figure out what to do next

 

Check the fuses and make sure all other connections are good.

Gary H.

 

So today I disconnected and removed the pickup coils and reinstalled them.
I Didn't get a spark so I removed the black/white wire going to the TCI and got spark.
Got the thing running and with the exception of a gas leak she runs pretty good.
So with the clutch lever wire wired together, the kickstand up with or without the relay,
In neutral and the black/white wire disconnected she fires.
I have a feeling if I disconnect the TCI and reconnect it will not spark. I'm going to try it and see.
Strange!
Thanks again for all the help
Will

 

sounds like your sidestand safty relay may be a problem
neutral switch

does your neutral light work?

 

Yes sir, it's working

 

the black white wire is to bypass the sidestand safety relay when disconnected fron tci .
if when you connect it you do not get spark disconnect the side stand relay and see if it sparks.

if relay seems to be problem it can be dissembled and cleaned
you can test side stand switch from the connector under the tool tray you can reach it going in over the lower fender you may have to remove the lower fender

 

Okay, so I had everything disconnected and it was running.
I connected the black/white and it still ran.
I connected the relay it still ran.
It was running and then a dead stop.
Disconnected the black/white again it fired up.
Could the relay be working part time because it's bored with retirement ?

 

open the relay and clean it
I would run it a while without relay see if the problem reoccurs.

also the clutch safety switch wires if you undo them bike will start in neutral and shift through gears it just wont start in gear when stalled at a stoplight.
disconnect them and run your tests again.

the relay is for sidestand switch and when you put the sidestand down in gear motor stops or if you put bike in gear with side stand down motor stops.
you could have a dirty side stand switch or bad connection in its harness

 

Sounds good, I'll run it without the relay for awhile and also clean the relay.
The clutch safety switch wires are wired together until I can get a new lever switch