2005 Tomos revival spark issue By ezoff1 (Read 2,798 times)

[ezoff1]

Hello, I recently purchased a used 2005 tomos revival that had only 400 miles on it. For the most part it is in good shape tho it was stored outside for a bit and needs a few cosmetic fixes. First thing I did was take it to a local tomos dealer for a tuneup and such and it seemed to be running good but this past week as I was leaving work it started up fine but when I got to the end of the block it died and would not restart. I am not the most mechanically inclined person but I did check the fuel line and that seems to be fine. So today I took out the sparkplug (which was replaced during the tuneup) and it seemed fine but I tested the plug and got no spark. What are the next things I should check. Due to the way it died on me so suddenly I dont know if that points to any one thing more than another but I thought maybe that info might be important. Thanks Ed

[rks]

Could you have maybe hit the kill switch on your handlebar?

[cyborg]

I've had more than one coil go bad on me when warmed up,,worked fine cold,,,dead warm

[ezoff1]

I know its not the kill switch unless the switch itself has gone bad...

[ezoff1]

The coil is the same or part of the CDI switch ? If so I will probably have to order one as my local dealer doesnt carry a ton of parts but I will call him and check in the morning.

[JR]

So it seems this happened all of a sudden, this indicates a poor connection in the wiring, could be the CDI itself or the coil.

I need the wire colors on the CDI listed so I can know if it's AC or DC or even a picture of them.

JR

[JR]

May 22, 2015 20:15:54 GMT -6 ezoff1 said:

The coil is the same or part of the CDI switch ? If so I will probably have to order one as my local dealer doesnt carry a ton of parts but I will call him and check in the morning.

I wouldn't buy anything until we can do some checking on the wiring, going to have to get to the CDI and let us know the wire colors.

JR

[ezoff1]

ok...will check them first thing in the morning...already have the cover off but its dark out here in montana atm and tough to see the colors

[cyborg]

Coil will be at the other end of the spark plug wire,,,follow the wire from the plug and there's where your coil will be

[ezoff1]

The wires are red, white, black and brown.

[JR]

May 23, 2015 10:47:38 GMT -6 ezoff1 said:

The wires are red, white, black and brown.

Just saw that this is a two stroke scooter, odd wiring. Wiring is this:

Brown = ground

Red = AC feed to CDI/Coil

White/Black = trigger coil feed wire to CDI/Coil

This scooter does not have a separate CDI and Coil but rather a unit with both. I'm guessing at what the red puts out on voltage but I'm sure it's got to be AC at 70 volts or more?

 

JR

[ezoff1]

Aye, that sounds about right tho I am not positive...I do know it is a single unit for CDI/Coil.

[ezoff1]

Here is a link to one that I found online:


.1977mopeds.com/tomos-cdi-box-a55.html" rel="nofollow" target="_blank">.1977mopeds.com/tomos-cdi-box-a55.html

[JR]

That indeed is it. But considering it was running fine and then quit after a service job from the mechanic I'm still inclined to think a loose wire or bad connection of some sort? Could be the CDI/Coil but throwing parts at it isn't the answer?

We need to see if the unit is getting voltage and a trigger signal. I would go through the wires to the CDI/Coil and make sure all is connected well first.

JR

[ezoff1]

I have checked the connections closest to the unit itself and they all seem to be tight. The only one i couldnt check real close is the black wire as it goes underneath some other stuff but will check that out tomorrow morning. It didnt feel loose when i wiggled it a bit but will check it out in the am. Is there a possibility it could be something with the kill switch?