350x cdi? and other 350x questions.

[ps2fixer]

Grounds are needed, but the harness should be connecting engine and frame together. Wouldn't hurt to throw a bolt in and snug it up.

74, that's summer xD, over here It's been riding around 20's, got a heat wave today hitting almost 40 and everything is starting to melt lol.

[Jim mac]

went out and ran a ground wire from the motor to the frame where the harness grounds to. no spark, tried all 3 coils nothing. pulled the plug boot and no spark.
so the 2 cdis I have I put a probe on the pin that gets the black/red wire from the stator. 6 pins double connector on the right the black red connects to the bottom right touch the probe to the middle bottom where the green goes and get 472 then 472 going to the bottom left green white wire.
top row nothing on the left or middle
blue then black yellow. then the top right black white the meter goes to 001 this is all with the meter on continuity
and this is the new cdi
the cdi that came with the trike
bottom right touch middle then left both reads 004
top row left middle nothing top right 001 so these 2 cdi aren't the same. jim

[Jim mac]

I checked the green white and blue yellow pins at the connector and getting 316 so the bulge generator is within spec and connected.
stator reads 76 at the connector going from the black red to a green pin.
I'll see what happens with the 400ex cdi when it gets here unless there's any other suggestions I can try? thanks again. it's a pain but will be worth it when I see a spark.
I even thought about just grabbing the bare plug wire, im sure it would work then
jim

[ps2fixer]

The CDI's being ohmed out directly don't really mean much unless you use the exact same tool they suggest in the service manual from the 80's. How the meter takes it's readings can be different from meter to meter.

I've done that before ironically, no spark, grab the plug wire and feel how "week" it is. It's kind of hard to judge, but if it doesn't bug you much, it's probably weak spark lol.


Stator and pulse generator seem to be good electronically. Ignition coil is a little off but I would think you'd still get something out of it. CDI is the linking factor between the two sides so that could be the key item.

[ATC King]

The spark plug caps have a resistor, either built in or removable.

If it's removable there's a slot on the plug side and the piece is taken out with a screwdriver. There should be a spring in there with the resistor which looks like the size and shape of a glass automotive fuse. A solid piece of copper can be used in place of the resistor.

If it's not removable, the whole cap needs replaced, if that's the issue.

[Jim mac]

I did check and there is resistance in the cap. jim

[Jim mac]

is it possible to hook a 12 volt lead to the black/red wire a d a ground to the motor using a battery charger,.kick it over and see if it sparks or can I melt something down?
Having a trike sit for days is killing me! I did install a new master cylinder and bleed tje front brakes today. just waiting for the cdi. jim

[Jim mac]

400ex cdi showed up. plugged it in and nada, zero, no Bueno, epic fail!!! .
Plan D. when i get a chance, I'm getting a bolt to pull the flywheel off the spare motor and swap the stock flywheel and stock side cover onto the motor. is it possible the goki side cover has the pulse gen a little too fast away from the tab on the flywheel????
I did try 2 different coils. we figured the stator was within spec. the pulse generator within spec. swapping all these parts are coming up with the same results. maybe it's time to change what hasn't been changed. jim

[ps2fixer]

Possible, while you have it apart take a pic of the stator + fly wheel for both machines. Also if the other engine is together it might be faster to transfer the parts over onto that engine to test for spark with out having to open the engine up as long as you can kick it over, pull the plug so it doesn't fight you and ground the coil and harness well, jumper cable should work for testing. If all the same parts from your current setup works on the other engine, then we know it's something to do with the stator/pulse generator. If still no spark, then unlikely both engines the same issue inside the engine.

[Jim mac]

the other motor has the cylinder removed. This is the pulse generator and stator I pulled off the complete engine I have to get a flywheel puller or a bolt to swap the flywheel because the flywheel on the trike has the goki ring gear attached and the stock side cover won't fit. jim

[Jim mac]

I should have mentioned both stator looks the same. I did check the engine vin and both motors come back as 1985 motors. jim

[ps2fixer]

Yep, that's the older style stator, lower ohm spec, so it did pass the ohm test then.

The pulse generator is the little black box in the stator cover. If I remember right it ohmed good. Not sure how hard it would be to bend it towards the fly wheel just a little bit. Don't want to too close to hit the tab on the fly wheel.

There's a proper tool for taking the fly wheel off, cheap on ebay and should be reliable and not cause damage (correct hardness and such). A standard bolt with the right metric threading should work too, the listing does say what the bolt size is and the thread pitch.

https://www.ebay.com/itm/195368967244

[Jim mac]

I ordered the tool last night. the local ace only had a m20-2.-5

[Jim mac]

I appreciate all the help trying to get this trike to start. Ended up selling the whole thing to another atc hoarder/collector. he's got 3 350x trikes and a good electrician to work on it. Threw in the extra motor, the new flywheel puller etc for exactly what I had I to it. he's interested in one of my 185s trikes for his kids. just have to convince myself to let 1 go. jim

[Dirtcrasher]

I once had the larger flywheel on the smaller stator, too much clearance to get a good spark and run. I had multiple NEW take out motors, pieces and parts and somehow mixed up the flywheel.

That was a HORRIBLE time for me, took me months to realize what a simple stupid mistake I had made. One stator allows both flywheels to slip over it but only 1 has the clearance to work correctly...