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Post by pistonguy on Oct 28, 2015 20:01:04 GMT -5
I am still WAAYYY confused. You say your mechanic is great. OK - so at the first hint of ANY possible engine problem the first thing he would have done is pull the plug, screw in the compression tester, and see what the compression was. Ten minutes. He didn't, which is IMPOSSIBLE for an actual mechanic. Next - without even checking he came to the conclusion the compression was too high. First thing any mechanic would have done is pull the plug, screw in the compression tester, and see what the compression was. Ten minutes. He didn't, which is IMPOSSIBLE for an actual mechanic. Then he theorized the combustion chamber was filled with oil (or gas, or zebras ... whatever). First thing ANY mechanic would have done is remove the plug and turn the engine over, which would have spit any zebras or walruses or oil out the plug opening and cured the problem. FIVE minutes. He didn't. I'm kind of doubting the "great mechanic" thing ..... So now the scooter is magically running (all those pesky T-Rexes must have departed the combustion chamber) but it's showing some symptoms of incorrect tuning. First thing ANY mechanic would have down is tune the damned thing, including any different jets (if needed). He didn't ....  . Pistonguys really been biting his young on this one. C'mon these simple diagnose takes seconds to a couple minutes. A Systematic few steps that Are Always followed This guys costing him money and its his only ride what lose a job cant get some food. dmn |
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Post by freespirit on Oct 29, 2015 12:54:15 GMT -5
ok.. so he isn't the greatest mechanic... he is .. old school and unconventional..
he did take the plug out.. and turned the engine over many many times but the oil (or gremlins) didn't come out. he was feeling compression w/ his finger in the plug hole .. dont think he has a compression tool tbh...
sooo...
put the uni air filter on today... now when i try to run wide open it bogs down.. it runs ok as long as i keep it at half throttle or so.. but full throttle it starts slowing down and just doesn't sound good..
will be so pleased when things are finally running well again...
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Post by pistonguy on Oct 29, 2015 14:03:04 GMT -5
ok.. so he isn't the greatest mechanic... he is .. old school and unconventional.. he did take the plug out.. and turned the engine over many many times but the oil (or gremlins) didn't come out. he was feeling compression w/ his finger in the plug hole .. dont think he has a compression tool tbh... sooo... put the uni air filter on today... now when i try to run wide open it bogs down.. it runs ok as long as i keep it at half throttle or so.. but full throttle it starts slowing down and just doesn't sound good.. will be so pleased when things are finally running well again... Bogs Down, The jetting is Most likely Out to lunch. Good luck. |
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Post by freespirit on Oct 29, 2015 14:16:55 GMT -5
what do you mean out to lunch? not working properly? haha.. think its a  size main jet.. not 100% sure. |
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Post by JerryScript on Oct 29, 2015 17:30:32 GMT -5
First, try raising the needle (lowering the clip or adding spacer washers). If you raise it all the way, and it still happens, you need to upjet the main.
If raising it makes it worse, lower it. If you lower it all the way, and it still happens, you need to down jet the main.
Switching to a uni, you usually need to upjet to compensate for the extra air being allowed in.
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Post by freespirit on Oct 30, 2015 8:28:55 GMT -5
the saga continues..
my buddy says.. ok.. just take the filter off altogether.. let it run unrestricted and see what happens. it ran way worse. undrivable really. if given just a bit too much throttle it would almost stall.
something that i had also noticed was that my headlights are out.. both hi and normal.. and even the indicator on the dash (that displays when the setting is on bright).. and everything seems to be connected fine.. in addition, i had some day running lights that were fed off the same line that do not work.
suspicions now are that that something is going on in the power area of my bike (stater?).. as the carb does have an automatic choke, that's default is set to on. if something is up w/ the stater or one of the wires or connections, its not sending the signal to turn off the auto choke, and would explain the issues im having..
hopefully will find out this saturday...
if not.. adjusting needle and or jets.. im going to get it dialed in.
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Post by pistonguy on Oct 30, 2015 8:46:35 GMT -5
what do you mean out to lunch? not working properly? haha.. think its a size main jet.. not 100% sure. apologies, Yes Jetting is incorrect Listen to Jscript. He removed the Air Filter Altogether, and said run it/try it? ouch! dmn, that rear wheel is constantly tossing snit back up in the engine. One Glass Bead in a Cup Valve Train will Destroy a $50,000 engine in less than a Millisecond.  |
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Post by lain on Oct 30, 2015 8:48:59 GMT -5
The power issue is unrelated to the running issue unless the issue is the power is not getting to the spark plug. Did you check for consistent good spark? Take the plug out, put it in the boot and press the end of the plug against the valve cover or a bolt then turn the engine to see the sparks. MAke sure not to touch the plug, it will spark you too if you are haha.
Check the stator wires, make sure you have a strong connection, if it is loose use some tape to get it to stay together. Use a multimeter to read at the stator wires to see if it has enough voltage. The important wires for making the engine run is the red/black (that is what powers your CDI coil and plug) and the blue/white (this is for timing and is sometimes colored red/white instead) wires. The white and yellow are charging and lighting wires that go to the rectifier/regulator and lights and also are responsible for the power for your charging system.
If it ran worse with the air filter removed you either are running lean or have a dirty carb, or possibly the above problem is the cause (loose or bad stator wires or unit). You should also check your intake spacer for cracks, sometimes a small crack can be a big problem and cause an excessive amount of air to get in.
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Post by freespirit on Nov 2, 2015 16:41:41 GMT -5
got the power issue sorted.. it was shorting out from a loose connection.. so the choke and the headlights are functional again.. tried tuning the carb to match the uni filter. had an  jet in.. tried an 80.. did the same thing.. it can't handle wide open throttle.. it bogs down.,. if i let up.. it goes ok.. and once its at speed it can go full throttle ok.. so then put a 78 jet.. its a little better.. thinking this uni just is going to be hard to get tuned for my bike.. which sucks.. i suppose ill keep trying smaller jets.. before i give up and just go to the standard airbox. |
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Post by rcq92130 on Nov 2, 2015 17:14:37 GMT -5
got the power issue sorted.. it was shorting out from a loose connection.. so the choke and the headlights are functional again.. tried tuning the carb to match the uni filter. had an jet in.. tried an 80.. did the same thing.. it can't handle wide open throttle.. it bogs down.,. if i let up.. it goes ok.. and once its at speed it can go full throttle ok.. so then put a 78 jet.. its a little better.. thinking this uni just is going to be hard to get tuned for my bike.. which sucks.. i suppose ill keep trying smaller jets.. before i give up and just go to the standard airbox. Hold on there, Hoss. You are going in the wrong direction! When you took off the filter it increased the air flow. Scooter ran even worse. Pretty stong evidence there is not enough fuel getting in to match the amount of air getting in. When you go to a SMALLER jet you make things even worse !!!!! |
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Post by pistonguy on Nov 2, 2015 17:22:36 GMT -5
got the power issue sorted.. it was shorting out from a loose connection.. so the choke and the headlights are functional again.. tried tuning the carb to match the uni filter. had an jet in.. tried an 80.. did the same thing.. it can't handle wide open throttle.. it bogs down.,. if i let up.. it goes ok.. and once its at speed it can go full throttle ok.. so then put a 78 jet.. its a little better.. thinking this uni just is going to be hard to get tuned for my bike.. which sucks.. i suppose ill keep trying smaller jets.. before i give up and just go to the standard airbox. That Engine is SCREAMING for More Fuel. Uni really easy to tune Bro. Were here to help, please give Her More Fuel. |
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Post by rcq92130 on Nov 2, 2015 18:21:37 GMT -5
got the power issue sorted.. it was shorting out from a loose connection.. so the choke and the headlights are functional again.. tried tuning the carb to match the uni filter. had an jet in.. tried an 80.. did the same thing.. it can't handle wide open throttle.. it bogs down.,. if i let up.. it goes ok.. and once its at speed it can go full throttle ok.. so then put a 78 jet.. its a little better.. thinking this uni just is going to be hard to get tuned for my bike.. which sucks.. i suppose ill keep trying smaller jets.. before i give up and just go to the standard airbox. That Engine is SCREAMING for More Fuel. Uni really easy to tune Bro. Were here to help, please give Her More Fuel. Hey P-guy! What's with the pirate symbol  ?? We all KNOW you are a metrosexual fashion model. |
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Post by pistonguy on Nov 2, 2015 19:42:36 GMT -5
That Engine is SCREAMING for More Fuel. Uni really easy to tune Bro. Were here to help, please give Her More Fuel. Hey P-guy! What's with the pirate symbol ?? We all KNOW you are a metrosexual fashion model. The Colors Have Been Raised. Done a few movies too. Probably know that  Metro? were you there in Chihuahua? dmn that race won't stop following me |
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Post by rcq92130 on Nov 2, 2015 20:31:13 GMT -5
Hey P-guy! What's with the pirate symbol ?? We all KNOW you are a metrosexual fashion model. The Colors Have Been Raised. Done a few movies too. Probably know that Metro? were you there in Chihuahua? dmn that race won't stop following me Never in a million years would I have been able to figure out how to spell "Chihuahua" Impressive! |
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Post by pistonguy on Nov 2, 2015 20:40:40 GMT -5
In Vino Veritas
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size main jet.. not 100% sure.
jet in.. tried an 80.. did the same thing..
