150cc peace sport tpgs 804, piston By fox83 (Read 7,504 times)

[fox83]

Sorry all for the disapppearing act but I was beyond my limit in money patience well just everything. But im back got a new piston and cylinder kit. Took my time putting it together and made sure my ring gaps were correct at .010.. ok so put it in and a massive bump in compression. ..imo. ok so now im trying to get my timing set. Im getting popping and stuff and ALOT of white/grey smoke poring out the exhaust when trying to start. So what do I need to attack first the smoke or the timing...or are the related? Thx guys again sorry. Just needed to step away for a bit

[czmdiver]

Oct 11, 2015 15:31:28 GMT -6 fox83 said:

Sorry all for the disapppearing act but I was beyond my limit in money patience well just everything. But im back got a new piston and cylinder kit. Took my time putting it together and made sure my ring gaps were correct at .010.. ok so put it in and a massive bump in compression. ..imo. ok so now im trying to get my timing set. Im getting popping and stuff and ALOT of white/grey smoke poring out the exhaust when trying to start. So what do I need to attack first the smoke or the timing...or are the related? Thx guys again sorry. Just needed to step away for a bit

Timing,.. something other than smoke
With the renewed Compression she should pop right off. (start right up).
Does it say running at all?

[fox83]

No just turns over and over. Do I need to line up on the line to the left of the T mark or the line to the right of the F mark

[fox83]

I must just be an idiot cuz I line the cam up on the line to the left of the T. And set my cam big hole pointed out valves at.004 and I set just get the engine turning over and over. When we use like carb or brake cleaner it acts like its bogging down

[Alleyoop]

Line to the LEFT of the "T" mark or a little before the LINE, BUT NOT AFTER THE LINE next to the "T" MARK.

White smoke is GAS. So also check to make sure the spark plug is firing. Make sure the motor has a ground wire to the frame. Also make sure the Killswitch is in the run position.

[fox83]

Yea checked all that bro. Just cant seem to get the timing set right. Because theres so much contradicting info out there about how to do it. We got to look at thos as a brand new scooter thays being built. How would we set it then

[fox83]

Ohhh ally btw the plug I didnt know what it was could it be a kick stand killswitch. And if so would the engine even turn over if it was engaged. Cuz the handle one when its engaged bike wont do anything no turn over or nothing

[Alleyoop]

Easy to find out if the side stand has a killswitch look for wires going to the sidestand, if no wires no killswitch side stand.

I do not understand why you think the timing is off? Line up the marker to the line before the "T" and then put the came in with with 2 little holes even with the top of the head and the big hole straight out and then PUT the CHAIN ON THE SPROCKET MAKING SURE YOU DO NOT MOVE THE FLYWHEEL PUTTING ON THE CHAIN, pretty easy and straight forward.
Have your BUD hold the flywheel so it does not move while you or he align the cam and put the chain on the cam sprocket. Then finally adjust the Valves.
Alleyoop

[fox83]

Ok so say ive done that and still can get it to start. What could it be? Leaking valves or something. Cuz when we spray accelerant into the carb while turn the engine over it slows down like it bogging down then when it drys up or whatever the speed of the engine turning over picks back up. But my brother said it should start briefly or atleast pop or bang or something when we use the spray. But it does the opposite

[fox83]

Also question could my chain be stretched out and cause problems or the belt for that matter?

[Alleyoop]

The chain would not cause a problem unless it is skipping teeth on the sprockets and throwing off the timing.

But what from you just said that it slows the motor down once some liquid is introduced into the chamber I WOULD SAY your plug is NOT FIRING and just filling the chamber with gas which would make it hard for the piston to come up and trying to compress the liquid.

So I would like to see a VIDEO of someone holding the SPARK PLUG ON THE VALVE COVER to verify that the spark plug is firing.

[fox83]

Ok bro ill do it tonight when I get off or in morning one

[fox83]

Im trying to get the video on but youtube is being stupid

[fox83]

Is there anywhere else I can downlond then post here

[Alleyoop]

Fox83, If you say for sure the spark plug is sparking holding it on the valve cover then no need for the video. But that motor should at least pop once with fuel in the chamber and spark firing and good compression. And if it is firing on the valve cover that also means the killswitch is off, the cdi, coil and trigger and stator all are working.

Something is NOT RIGHT but you say everything i MENTION is good. The only thing I can think is that the SPARK PLUG is NOT REACHING INTO THE CHAMBER and is FIRING and grounding out inside the head where it screws in. IN OTHER WORDS the head is thicker or the spark plug is shorter.

So you have me at a loss BUD, if you say all those things are good and the timing is good. What happens if you hold the throttle a little open and crank it, DOES IT ACT ANY DIFFERENT?
Alleyoop