85 xj700x

Hello everyone. Just found this site. Mainly cause I'm having problems...lol. I have an 85 maxim x. It is turning over but no fire at the plug. I think its the coils. I have been looking all over for replacements but not having too much luck. Part number is cm12-25. Everyone tells me to get rid of it and get something newer. Maybe someday I will but I wont let her go. This is my first street bike and I love it. Any help would be greatly appreciated. Thanks.

 

have a look at threads mateon this forum , as a few of us have had probs with this, but most differant issues, trim leads, try new plugs,, or is the side stand down,or the switch faulty, like the clutch switch, ect ect,,, mine sparked,then it didnt a day later, got power up to coils, nowt when turning it over,i was told cdi(black box ignitor) but my fuses were ok? , i found out it was a brass type relay by the black box, 4 pins, pull that out try that first. just to see, pull it out,,

 

it would be odd that both coils go out at the same time.
you might want to get an ohm meter and start documenting resistance.
from there, we work on it
if you need help, post this in XJ Chat as well.
if you need replacement parts, look under the buy and swap section.
there are a lot of resources available on this site to get and keep it runnin a long time

 

I have two sets of coils, but as others have said I doubt it's the coils.

Check the safety relays (side-stand and neutral) along whith the run/stop switch on the handlebars.

You should have 12V on both red/white wires going to the coils.

Do you have a service manual and/or do you have some electrical skills?

 

Check the basice first, fuses and electrical connections for the ignition. After checking that post back and we'll go from there.

 

Not to hijack your thread but a quick question, Is a 1985 xj700x a YICS engine?

 

No. The engine on the X is a variant on the one used in the FZR bike.

 

Back again....Thanks all for your input. I did get it to fire again finally, new battery did the trick there BUT............to get it to fire I had to tap the ignitor box with a screwdriver. I have 2 others and I can get it to fire with one of the others but not the other one( I think its no good). Is this the only ignitor I can use for my bike? If so where can I find a good besides Ebay of couurse. Or is there possibly another problem? When it does fire it does sound like its missing until the rpms get higher. I am going to get new plugs and try that angle, hard for me to believe its them since I just bought them this year. But it is something for me to try to rule out. I am some what mechanically and electrically inclined but still learning this bike. Again thanks all for the help and input. I did have to replace the starter this year and rewire some wires when I found a plastic connector melted. Could be time to just tear it all down and rebuild over the winter.

 

a lot of guys on here have spare parts laying around, so you may have some luck there. just post in the Buy, Sell area and see what you can get leads on.

as for your plugs- if they fouled out from all the fireless cranking, they could have issues.

also, a miss at low RPM could be a fuel issue. let it idle a few minutes after it is fully warmed up... take it out for 15 minutes and then come home. idle it a minute and kill it. check the plugs. see what they show. post a pic and questions in XJ Chat and someone will be glad to offer some assistance.

 

Quick question...Is there a xj700 and a xj700x ? And will a wiring harness from an xj700 work on a xj700x ? OK that was 2 my bad. lol

 

Yes.

That I do not know. I'm looking at the wiring diagrams trying to compare the two, but it's hard to tell from a quick look. Obviously, the X has the temperature sensor and the fan mechanism to deal with that the aircooled doesn't. There does seem to be a lot more stuff shown on the diagram for the X, though.

 

they are a little different, so wont go right in place w/out some work

 

The xj700 and xj700x have different harnesses, they will not work on each other. The xj700 x has a link for the coolant system/fan/and the coils are located differently. I also believe, actually I know, that the stator is different on both bikes.

As far as your spark problem is concerned...what numbers are not sparking? I went round and round with one x that I had and it turned out to be a bad side stand relay (blue relay under the left side cover). It will not allow the bike to spark if it is
a. bad,
b. corroded
It's a pisser to find, and they can be very tempermental.

My father's 85 x (which I built from a box of parts) had an intermittent spark. It'd be running fine, then start sputtering and getting pissy. It turned out that there was a bad/loose connection on the tci to the harness. A zip tie (that is still there today), is what did the trick.

The maxim x is not a YICS engine

 

The xj700 and xj700x have different harnesses, they will not work on each other. The xj700 x has a link for the coolant system/fan/and the coils are located differently. I also believe, actually I know, that the stator is different on both bikes.

As far as your spark problem is concerned...what numbers are not sparking? I went round and round with one x that I had and it turned out to be a bad side stand relay (blue relay under the left side cover). It will not allow the bike to spark if it is
a. bad,
b. corroded
It's a pisser to find, and they can be very tempermental.

My father's 85 x (which I built from a box of parts) had an intermittent spark. It'd be running fine, then start sputtering and getting pissy. It turned out that there was a bad/loose connection on the tci to the harness. A zip tie (that is still there today), is what did the trick.

The maxim x is not a YICS engine