Sparkage issues help!!

[Atc200Irv]

helpppp mee!! my just plain jane 200 atc quit working right, one day im riding it running beautifully, then it back fired and.. now it wont spark, and if it will the spark is weak and off time..im probably going to by a new CDI box and alternator.. if any one has wisdom they might share, Please share it!









Ryan

[Tri-ZNate]

one day im riding it running beautifully, then it back fired and.. now it wont spark


Ryan

Did you try a new spark plug by chance? A backfire could foul your plugs.

[Mobular]

Hmmmm...timing chain has jumped possibly.

[jenndnn3]

I agree timing.

[ClayW]

I personally think that the only way it would have jumped time is if the Chain already had a large amount of slack. I would think you would have herd that chain before. If the motor was runing quite and good, I would look else were. Coil, stator, CDI what not. The back fire was prob it loading up on fuel, due to the weak spark not buring the excess fuel.

[Atc200Irv]

Yeah i did get a new plug, and im kinda new to the trike world. lol this is my first one... iv got some experence with smaller engines but this has me stumped, so if ya could would some one explain this timing chain to me?






Ryan

[jenndnn3]

To quickly check if you jumped, when you open your cdi, is the 2 lines in the cdi matched up with F on the flywheel? (tdc on engine backed up slightly) The lines on the black box and the box that rotates with timing chain. If its not you need to go further in. Further in, You need to remove the cdi unit. Behind it is your top timing chain sprocket. With the chain on it. What you will do is set the engine at TDC, on "T" (flywheel again) rockers loose, and see if the "O" on the sprocket lines up with the notch above on the case cover itself. Oh yeah if you do get there, how loose is that chain?

I probably lost you on this so you may very well need a manual. But Timing chain pretty much controls, the valve opening, and when to tell the cdi to spark. If it jumps, it will spark wrong time, valves open wrong time, alot relies on this. IF you have a multi meter, you can quickly check all electronic goodies before even checking the timing, that way, saves you some tear down time, if it is indeed there. That way simple read of the meter would save alot of time. You will get 2 different types of backfire, one through exhaust (burning of excess gas) like Clay mentioned, and one through the carb. Carb is timing. Another thing you can do is put your hand over the carb, is it sucking or blowing. This is when you of course try to fake start it. Sucking is good, blowing your a not timed, or valve adjustment needed. In your case if your carb indeed does the blowing, added with the other symptons, I am willing to bet the chain went a jumping. I hope this all makes sense.

[Atc200Irv]

lol, well it kind of did, i have a general idea of what * mean now, so ill work on it tomm, and bring this info over with me. but whats really awesome is my buddy who has a slew of trikes, has a manual that overs all 185's and 200's over like a 5 year span and mines in it, that books a treasure. lol but iv been looking in the llike electronical section, ill try finding this timing chain in there, and we'll see what happens.. lol thanks ill post again on here if i cant figure it out. thanks again



Ryan

[jenndnn3]

Read through the book, then it will all make sense. You are gonna find the timing chain around the uninstall reinstall the head section.