1987 Honda TRX350D Foreman I think (it has the digital fuel gauge).
Purchased rough shape with NO SPARK, NO Ign. Coil. Want to get running for my boys since cant afford a new one. I have seen many posts but no one Follows up and tell us if the actually did find the problem. I am looking for someone whom I can email with to help me thru it I can take pictures as needed to help. Thanks in Advance…

Since then I have both owner and Service Manuals, purchased a new coil, boot, plug.
Checked all elec. Switched on handlebar and work, as they should. She will crank over using the elec. Start and fuel pump works fine. JUST NO SPARK…
I have gone thru the service manual tests a few times now- double checking myself and all components come up in spec. What am I missing?
I have tried tapping the CDI and trying to see a spark.
I am not 100% confident on the CDI but I read so many have bought new and it did not fix it- so that is why I think I am missing something.
I have gone over wire harness and cleaned up some questionable areas, only found (2) grounds and they were clean and tight.
I have a Honda trx200 that is similar that runs great so it may help in the diagnoses.
I checked the 200 and get over 60volts at blk wire to coil while cranking and on the 350 only have 9-12V. I am just stumped, but very patient and will get it I hope.

Sorry for long post- Please if your knowledgeable on these bike can you help us.
Thanks again for any input – I do not want to sell it non running – I want to put her back together for my kids.
Chris

 

I am by no means an expert, but I bought a 1987 TRX350D a couple months ago with electrical problems and learned a little by working on it.
Here are a couple of things to try:
1) bypass the run/stop switch. Mine was giving flaky readings. Find the natural colored 4pin connector from the handlebars on the right/front side and jumper the Black/Green wire in this connector to the Black/White wire bullet connector next to it (goes back to the CDI).
2) confirm that CDI is the correct one. I think that the CDI in the 1987 TRX350D is unique to that model year; no other year or model had the same CDI. Is it possible that the previous owner tried a different CDI and never got it to work? The CDI on my 1987 was a Shindengen HA7 C1537.

Keep at it, you'll figure it out!

 

I agree with sawmill jeff. I bypassed the kill switch on an 87 trx125 by unplugging the connector on the right side. I would try bypassing the switch first and see if you have spark. If not let us know.

 

I had one the other day that had an fuse blown... in the trunk in fuse box second one from the left was blown. I had another one that had an bad voltage reg\recfi.....Good Luck...

 

Thanks Guys- Last nite I was looking hard at the switches- with my wire diagram and service manual in hand. I keep trying to trace things back to check connections and ground. I did dbl. check the fuses and they are ok- however someone had removed the large inline fuse and direct wired it. I am thinking it should be ok - just may cause a problem if something spikes and it will find the next weakest link.
Anyway I will do the switch bypass thing and let you know.
I typically everynnite try to do some more diagnoising on this thing- I can't let her get me- I do have the correct CDI- (just not sure if good).
I bought this from a guy who received it as payment for a job and could never get spark, not sure how long he tried. But I really want to get her going for my boys - she looks pretty rough but I know if I get spark then I can make her come back to life.
I really appreciate the comments and help thanks for hanging in ther with me.......
Chris

 

SO I think I have it narrowed down to nothing coming from Pulse to CDI.
But I would think that some sort of volatge should send signal to CDI? I did check the Pulse Coil using OHM's like service manual and it tested 327ohms (in spec). But I am thinking that it only checks the wire using this method - does not tell me it is working properly? AM I ON THE RIGHT TRACK????

SO I took off Left engine cover last nite and found all clean parts NO RUST..
But the plug for the Pulse coil was wore off down to the metal on the plug in clip- what I mean is the rubber cover on the clip that plugs into the coil was rubbed off very rough - like somting was rubbing on it- So does this mean that it grouned out and just need to re insulate the clip. I will look closer but trying to find what it was rubbing on no visible signs right off the bat.

THOUGHTS???

 

Does the end of wire run to ground? if you turn buzz box on or ohm meter on one lead to ground, either the the wire or pulser see if it's going to ground.... Did your side cover have an gasket between it and case? sometimes people put sealer instead of an gasket BUT gasket is also used for an shim to give clearance between moving parts?...good luck.

 

Did not think to check with meter. However I covered the bare wire and put it back on temperarily to see if it would work.. NOTHING- Still no spark. I could not see anywhere that it was hitting anything to cause the insulation to rub off like that. and there is a gasket on the case.
I am starting to have mixed feelings if I am ever going to get this- I do not want to give up- or should I say I WON'T...

I did however compare some wiring with our 200sx that has elec. start also- I see that the blk/wht wire on my 350 has 12v coming from it to CDI with key on. I tested and documented all the terminals from the 200 and none have 12v going to CDI- they only give a range of .8 -.3V.
The one thing I have noticed that of the 3 wires in the CDI jack on the 350 have been messed with and I am not 100% sure they are in the right locations. There is a 4 pin jack and only using 3 of them.

Can someone tell me the pin location and color of the wire at those pins.
Looking for gr/wht, blk/yl, and bl/yl. wires.
I just hope when they were fixing the ternimal ends they put them back in the right spot.

I have noticed that the only pin not used on the 350 does have 12v at the cdi- but it is not used- on the 200SX it is a beige wire and it is used.

Advice anyone..
Thanks

 

a wiring diagram should also show the pin connects does your neutrallight come on? it definitely will not throw spark if the neutral light isn't on.

 

Yes Netural lite and oil Temp lite work as they should.
I did have someone send me the pin color locations and found out 2 of them were switched.
I am going to try it tonight after I put the wires in the correct locations on the jack.

Hoping that this will give me spark.

Will let you know- Thanks