84 Trx 200 No spark - Honda ATV Forum
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post #1 of 16 (permalink) Old 07-12-2010, 06:33 PM Thread Starter
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84 Trx 200 No spark

I picked up a project bike. The damage, front brake lines cut, no seat or rear plastics, two flat rear tires. I have a newer ebay starter that came with it and the battery is on the charger.

First thing I did is check compression after 5 pulls it was 100 psi. Then spark which I didnt have. Tried different plug same result. The ignition coil looks like it was replaced but cant be working or the problem is somewhere else.

I do have a multimeter but dont no what to check when the battery is in.

Last edited by sectlandscaping; 07-12-2010 at 06:36 PM.
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post #2 of 16 (permalink) Old 07-12-2010, 06:54 PM
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No spark could be caused by a few different things. The first thing that I would check on the 200 is the pulse generator/rotor air gap. The 200 had the pulse generator and rotor at the end of the cam, on the side of the head, behind a round metal cover. I would check to make sure the rotor and pulse generator are clean and free of any rust. Then I would make sure the air gap is correct. If it's not correct, you won't have spark.

If that's not the problem, it could be the ignition coil, CDI, pulse generator, or stator. I would recommend getting a repair manual, if you don't already have one, to get the specs. for testing the components.

Most 4-wheeler problems are caused by a loose nut connecting the handlebars and the seat!!

You only need two tools in life -- WD-40 and duct tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape.
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post #3 of 16 (permalink) Old 07-13-2010, 01:46 AM
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Try the suggestion of helmut check the pulse generator, also check the ignition coil but hopeful the cdi still works.
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post #4 of 16 (permalink) Old 07-13-2010, 08:58 AM
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Helmut pretty much summed it up...lol
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post #5 of 16 (permalink) Old 07-13-2010, 10:17 PM Thread Starter
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The guy that I bought it from said he would send a manual. I did already order a new coil and regulator on a whim. I dont have any free time till thursday so maybe it will all be here by then.

Ill tear into the pulse generator. Gives me somewhere to start. Do you know the proper gap off the top of your head?

The battery ended up being good and I still have a starter to put on but Im not to worried about that yet.

Is there a reason I cant shift to reverse? It moves for hi and low.
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post #6 of 16 (permalink) Old 07-13-2010, 10:27 PM
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Quote:
Do you know the proper gap off the top of your head?
The pulse generator/rotor air gap for the 1984 ATC200S, which has the same setup, is 0.012-0.016 in, so it's probably the same.

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Is there a reason I cant shift to reverse? It moves for hi and low.
Are you pulling up on the shift lever when you move it? If so, then I don't know.

Most 4-wheeler problems are caused by a loose nut connecting the handlebars and the seat!!

You only need two tools in life -- WD-40 and duct tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape.
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post #7 of 16 (permalink) Old 07-15-2010, 01:44 PM Thread Starter
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I have to get a better screwdriver to get the pulse cover off. So I cant look at that yet.

I put in the new coil and still no spark. The starter solenoid barely will spark when I touch both ends with a screw driver. I didnt waist my time putting the newer starter in. The current one does not crank or make a sound at all.

The first pic shows my $50 beauty and the next is showing what looks to be a missing wire by the hi/low shifter.

Another shows the regulator with a broken connector piece.
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Last edited by sectlandscaping; 07-15-2010 at 01:50 PM.
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post #8 of 16 (permalink) Old 07-15-2010, 01:55 PM
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Quote:
The starter solenoid barely will spark when I touch both ends with a screw driver.
Sounds like the battery is about dead.

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the next is showing what looks to be a missing wire by the hi/low shifter.
The 1984 Fourtrax 200 was the first 4-wheeler that I owned, but it's been so long I can't remember, but I'm guessing that, that wire goes to the reverse switch. When you said it wouldn't go into reverse, did you mean the reverse light won't light up or did you mean that it wouldn't actually go into reverse? That wire missing is probably why the reverse light won't light up if that's what you meant.

BTW, does the neutral light come on when you turn the key on?

Most 4-wheeler problems are caused by a loose nut connecting the handlebars and the seat!!

You only need two tools in life -- WD-40 and duct tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape.

Last edited by Helmut; 07-15-2010 at 01:58 PM.
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post #9 of 16 (permalink) Old 07-15-2010, 02:19 PM Thread Starter
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Quote:
When you said it wouldn't go into reverse, did you mean the reverse light won't light up or did you mean that it wouldn't actually go into reverse? That wire missing is probably why the reverse light won't light up if that's what you meant.
It wont move physically. I dont see any neutral or reverse lights on the quad. Now this wire wont stop the engine from sparking?

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BTW, does the neutral light come on when you turn the key on?
no key. It has a off, on, off switch on the handle grips with a light control under and a button to start.
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post #10 of 16 (permalink) Old 07-15-2010, 02:40 PM
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Quote:
Now this wire wont stop the engine from sparking?
If it's the reverse sensor, it shouldn't.

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no key. It has a off, on, off switch on the handle grips with a light control under and a button to start.
The one that I had, had a plastic piece that bolted to the center of the handlebars with a keyswitch, a green neutral light, a red reverse light, and I think it had another red light for the oil temp light. It looked about like the piece with keyswitch on the Fourtrax 300. The handlebar switch with the light control and on/off switch and start button is normal, but it should have the plastic piece in the center of the handlebars with the keyswitch and lights.

If someone took the reverse light off, they probably just cut the wire to the reverse switch. If that is, in fact, the reverse switch, it won't keep it from running.

Most 4-wheeler problems are caused by a loose nut connecting the handlebars and the seat!!

You only need two tools in life -- WD-40 and duct tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape.

Last edited by Helmut; 07-15-2010 at 02:43 PM.
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