No start/ dead stop kick

EMira

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I’ve been trying to get my new build started and just can’t. Fresh build with brand new Vm34 carbs, xs charge red ignition, with xs charge PMA, kick start only, with a capacitor( now hooked to 12v battery).

When i try to kick start it, I’m kicking straight into compression, the kick just stops dead. And hurts. A few time i get a bang from the exhaust ( its really short).

What am i doing wrong. This is also my first kick start bike.

Any double checks i should make?
 
Yeah, ya got a lot of variables there with the XSCharge and (maybe Mikes) VM34's on a new rebuild.

Back to basic verification: with left piston TDC you got advance pin at exactly 12 O'clock on the right side of cam?

You've verified spark at a sparkplug out and grounded to the head (bare metal)?

Do you see any evidence of fuel on a removed plug (or have tried some fuel in the plug hole)?
 
So no it appears I’m 180 out then? But the lines on the advance side line up. What did i do here? Sorry do the newbie questions
 

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I think so, but to be sure, remove the advance unit and see where the locating pin is.
 
This is kinda wild to me, although i put this engine together at the begging of the year, I distinctly remember going back and fixing a time error i made because i followed a bad video. With the New PMA I don’t have any timing marks but with the left cylinder up and both valves closed this is where both pins live. Is it possible to flip the pin on pick up (left side) and be back?
 

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Let's double check: roll motor over normal direction (CCW) until left intake valve opens and then closes - next time left piston is at TDC - on compression stroke - that advance pin needs to be 12 O'clock.

If not - there is a way to move the cam without pulling motor;)
 
Not familiar with your ignition, but if you have a single, dual output coil, it's a wasted spark system. In other words, you can't be 180° (at the cam) out.
You'll get spark every 360° of crank rotation. Doesn't matter if the cam pin is straight up or straight down when it fires.... (Edit: should fire both at straight up and straight down) 'cause both cylinders will fire.
 
I think the cam is maybe out 180, but I'm truing wheels so.....:)
 
Let's double check: roll motor over normal direction (CCW) until left intake valve opens and then closes - next time left piston is at TDC - on compression stroke - that advance pin needs to be 12 O'clock.

If not - there is a way to move the cam without pulling motor;)
Ya we are still at 6 o’clock. I am running a, single coil is jim correct?
 
....xs charge red ignition....

I think the cam is maybe out 180, but I'm truing wheels so.....:)

'K... that iggy uses a single... dual output coil. It fires both cylinders every 360°.
.... or... every 180° of camshaft rotation.
In other words... you can't be 180° out.



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Ok, although the pins are 180 out from where they are suppose to be, it doesn’t matter. Now I’m not using that particular coil but i am getting good spark from the dual coil I’m using.
 
Ok, although the pins are 180 out from where they are suppose to be, it doesn’t matter. Now I’m not using that particular coil but i am getting good spark from the dual coil I’m using.
Correct. As a technical matter, you might have the cam 180° out. As a practical matter, it doesn't matter at all... as long as you're getting spark at about 15° BTDC... one of the cylinders will fire.
 
Thanks guy I appreciate you both helping me out here. A reason you can thinking of why i might be having this kicking problem. It feels like the compression just stops me from following though
Let's double check: roll motor over normal direction (CCW) until left intake valve opens and then closes - next time left piston is at TDC - on compression stroke - that advance pin needs to be 12 O'clock.

If not - there is a way to move the cam without pulling motor;)
id love to hear your suggestion on how to pull the cam with out pulling the engine.
 
A reason you can thinking of why i might be having this kicking problem. It feels like the compression just stops me from following though
Are you saying it fires and kicks back?
 
I’ve been trying to get my new build started and just can’t. Fresh build with brand new Vm34 carbs, xs charge red ignition, with xs charge PMA, kick start only, with a capacitor( now hooked to 12v battery).

When i try to kick start it, I’m kicking straight into compression, the kick just stops dead. And hurts. A few time i get a bang from the exhaust ( its really short).

What am i doing wrong. This is also my first kick start bike.

Any double checks i should make?
Kicking back usually means too much spark advance, try turning the ignition mounting plate counterclockwise a bit to retard the timing. How did you set up the ignition timing, with no timing marks on the PMA?
 
Are you saying it fires and kicks back?
I have gotten some loud bangs for the exhaust, but what happens is as when i kick it on what seems to be the compression stoke it seems to fire and the kicker stops dead about half way through, but doesn’t kick back.
 
So, let's get more specific: does the kicker stop hard at horizontal [well before it hits footpeg (assuming you have stock footpeg)]? Once that happens, can the motor continue to roll CCW by hand, or what happens?

Has motor been rephased?
 
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