Starting problems

[Ltown3wheelin]

Ok guys I just got my trike back together and now it won't start
I sprayed starter fluid in the air intake and that didnt do it. I have good compression and spark anyone have any other ideas I should try.

[84honda200s]

timming could be off. if you have compression and sprayed starting fluid in there it should have fires. recheck the timing. remember just because you have spark dont mean you have spark at the rite time.

[Ltown3wheelin]

How do I check the timing. Working on it isn't the same as working on my car.

[84honda200s]

lol ok what model trike you got ?

[Ltown3wheelin]

Its an 84 ytm 125L when I bought it the motor was torn down I put it together but before I put the piston in my son decided to yank on the pull starter

[Tri-ZNate]

Do you have fuel to the cylinders? Probably a plugged pilot jet

[84honda200s]

Its an 84 ytm 125L when I bought it the motor was torn down I put it together but before I put the piston in my son decided to yank on the pull starter



dam man sorry. i dont know jack about yammie.

[Ltown3wheelin]

Do you have fuel to the cylinders? Probably a plugged pilot jet

Nope It was bone dry and when I took the head off tonite I had fuel in the cylinder.

[Ltown3wheelin]

The guy who sold it to me was only gonna use it as a parts trike I couldn't let that happen. I'm looking for a honda now, but cash flow is low.

[Tri-ZNate]

It cant be timing since its a 2 stroke. If you have fuel, spark, and compression the only thing I can tell you is you flooded it out

[Ltown3wheelin]

It cant be timing since its a 2 stroke. If you have fuel, spark, and compression the only thing I can tell you is you flooded it out

Alright thanks man I'll try again in the morning.

[84honda200s]

lol told ya i didnt know anything about yammie. hell i didn even know what machine he was talking about. oooo well. take it away yammie guys.

sorry for wasting your time.

[NINJA]

OK OK, I know I'm a noob here, however I am also a freelance mechanic and I can't help but state the obvious. For an internal combustion engine to run you need fuel, spark, and finally oxygen. How's the air filter on that thing? Have you tried starting it without it. Because man everything starts on ether unless you drown the plug with it in which case there won't be a spark cause the current will just travel through the soaked electrode. If it still won't start with the air filter off and just a couple huffs of ether you may have weak spark in which case the compression in the cylinder is actually suppressing your spark so as not to achieve combustion. There's alot of variables here and I need more specifics to really know which route to take in diagnosing this. If your compression is too low she won't pop either.

[Ltown3wheelin]

OK OK, I know I'm a noob here, however I am also a freelance mechanic and I can't help but state the obvious. For an internal combustion engine to run you need fuel, spark, and finally oxygen. How's the air filter on that thing? Have you tried starting it without it. Because man everything starts on ether unless you drown the plug with it in which case there won't be a spark cause the current will just travel through the soaked electrode. If it still won't start with the air filter off and just a couple huffs of ether you may have weak spark in which case the compression in the cylinder is actually suppressing your spark so as not to achieve combustion. There's alot of variables here and I need more specifics to really know which route to take in diagnosing this. If your compression is too low she won't pop either.

Tried without the air filter it still didn't work.
When I bought it the piston wasn't even in the bike. Now I'm a pretty decent car mechanic and I figured I could get this thing running. I bought the new piston kit from my local dealer had my recoil starter rebuilt because it wasn't retracting right. Still wouldn't start so I put some starting fluid in there and it still wont work the only thing I can think of if it isn't flooded which I guess is a possibilty is that this guy blew the rings drove it home and gouged the cylinder walls causing me to lose just enough compression to make it a pain, but it didn't look scratched when I looked.

[Ltown3wheelin]

but I didnt spray right into the cylinder I sprayed into the intake so that could be why.

[NINJA]

what do those reed petals look like? Have you checked the reed cage yet?

[Ltown3wheelin]

No clue what that is.
I need some serious help I'm guessing

[NINJA]

that is the part sandwiched between the rubber intake manifold and the cylinder head. the carburetor pops into it and the opposite side of the carb is attached to your airbox boot. when you remove said carburetor and then unbolt your intake manifold you're prolly gonna have to pry the the reed cage off your cylinder as they are known to stick thus destroying your gasket. however once this has been accomplished you will be able to inspect the reed cage (aka pyramid) and the flat reed petals that are attached to it with phillips screws. the stock petals were were made of very thin spring steel and can get bent upwards after a while or chip. aftermarket petals which they no longer make for it are made of fiberglass and can chip or fray. basically, if you hold the pyramid up to the light and can see anything more than a millimeter of light shining between the reeds and their seat then they need replacement.

[84 ATC 200M]

Could Be:

A: Defective Recoil Starter

B: Seized Piston

C: Seized Crankshaft

D: Brokem Connecting Rod

E: Locked Up Transmission Or Clutch Assembly (ies)

[jeffatc250r]

As dumb as this may sound, take your exhaust off, iff it has a mouse nest or other foreign debris in it, it wont fire. Put some compressed air to it. Also change your plug, even if you are getting spark, do these before tearing into the thing any more than you already have.

[MTS]

First and formost, Throw a compression guage on it, By the sounds of it, you just stuck a stock size piston in, the bore could be too far worn and scard to make enough compression to pop, should be above 100lbs, Hold your hand across the intake to the carb and pull it over, that will tell you if its got an air leak anywear, it wont suck if it dose, Take the carb apart, clean it, inspect the float needle and seat for groves, 10:1 say's its worn out and leaking fuel past it when its closed (quick test, hold it down and blow though the fuel inlet) not 100% accurate but will give you a good idea if its Real bad,,,a leakdown test is optimal, Now asuming you have good spark, compression, and a good carb, chance's are its got half a litre of fuel in the bottem end and wont pop with the pull start,,,,Push it or drag it in gear behind something,, if that dont get it going, you have some other issues., also make sure your A/f screw isnt crank'd all the way in, should be 1.5 turns out or about there,

[Ltown3wheelin]

Thanks guys its all been helpful sent the cylinder off to be re bored this week as well as bought a new recoil starter got a new wiseco kit coming
the gears are good luckily enough so im thinking the carb or the the plug if this stuff doesnt work

[NINJA]

*cringes*
I hope your sending that new piston with the cylinder so they know what your tolerences should be.

[Ltown3wheelin]

the guy whos boring it got me the kit he did my buddies 125 2 weeks ago and it started right up for him even though it was blowing oil