?? Added flywheel weight to 2003 EC200, bike ran for test ride now wont start

[Fred1956]

Proper compression test- THROTTLE WIDE OPEN- kick the engine several times....at least 5 times, some will say kick until the needle stops moving

[mswilkes]

Originally Posted by Fred1956

Proper compression test- THROTTLE WIDE OPEN- kick the engine several times....at least 5 times, some will say kick until the needle stops moving

I have performed many compression tests over the years as i restore classic cars for a hobby. I tested it 3 times because of the results. The last test i even removed the gas tank to make sure i was getting a seal. I even tested the gauge through my compressor after i finished and it is reading true.

However, I did find a mess inside the engine so far. The piston has a shared of metal rubbing the cylinder and has caused quite a nice grove in the cylinder.

[mswilkes]

Here is the pic

[Fred1956]

Originally Posted by mswilkes

I have performed many compression tests over the years as i restore classic cars for a hobby. I tested it 3 times because of the results. The last test i even removed the gas tank to make sure i was getting a seal. I even tested the gauge through my compressor after i finished and it is reading true.

No problem, but with 30 psi of compression I wanted to be sure. It looks like you found your problem. Be sure when you get the cylinder off to take a close look at the rod bearings on both ends, that looks like a needle bearing piece came loose........

[Jakobi]

Ouch!

Hows the timing on it though? Must have munched it at the end of the last ride. Surely you'd feel the lack of compression under foot with only 30psi too.

[pscook]

Originally Posted by Jakobi

Surely you'd feel the lack of compression under foot with only 30psi too.

It is "resistance to turnover," doesn't matter if it's friction or compression. Hard to kick is hard to kick.

[jostby]

Originally Posted by jostby

if you have spark then the problem isn't the kill switch wires (they kill the spark ) and won't be any other wire issues either. Keyway is a good clue it isn't a timing issue.
The only other thing is fuel/compression.

Is the plug getting wet after you have been trying to start it? Not wet = no fuel.
If the plug isn't wet try laying the bike on its side until fuel dribbles from the overflow then try to start it.

Next is to check the rings to see if they have stuck. My kid burned his rings (polite way to say he melted things) and the bike still felt like it had compression when trying to start it but wouldn't even pop.

just sayin'...

Sent our cylinder to Millenium for replating and had good results.

wish it could have been a cheaper fix for you.

[Jakobi]

Originally Posted by pscook

It is "resistance to turnover," doesn't matter if it's friction or compression. Hard to kick is hard to kick.

Take the spark plug out and tell me that.

I do imagine you would get much more resistance if something was lodged between the cylinder and piston though, so your point still stands correct!

[mswilkes]

Can anyone point me to a good place for replacement parts for the motor.

[jostby]

Contact Millenium for the cylinder replating and allow them to sell you the piston, that way they can size the cylinder to the new piston. If you don't have a dealer close by then contact GoFasters for the gaskets.