80cc Mystery

**Bikeguy Joe** · #21 (**permalink**) 06-23-2008, 07:49 AM

Looks like your base gasket was leaking and it ran lean. How long have you had it? Talked to the seller (warranty) yet?

**Bikeguy Joe** · #22 (**permalink**) 06-23-2008, 07:54 AM

BTW the squeek is in the drive area and has nothing to do with your other problems.

MrLarkins · #23 (**permalink**) 06-23-2008, 08:07 AM

lean, i keep hearing those kind of words...lean means too much (oil, gas, fuel, air) PICK ONE please.

Pablo · #24 (**permalink**) 06-23-2008, 08:54 AM

Quote:

Originally Posted by MrLarkins

lean, i keep hearing those kind of words...lean means too much (oil, gas, fuel, air) PICK ONE please.

Traditionally when someone is talking about an engine and says "lean" they mean less fuel in the air+fuel mixture. So naturally this means more air.

Lean oil in a 2 stroke premix means a light oil in the mix, less oil per quantity of fuel. (Confusingly enough, when oil is mixed heavy in the gas, it can mean a lean air+fuel burn situation)

So anyways, yes see my Saber special.

Lastly - what exactly is the problem now?

regleo · #25 (**permalink**) 06-23-2008, 09:32 AM

or Kings Motor Bikes,Motorized Bicycle,Bicycle Engine Kit,Bicycle motors,Whizzer motorized bicycle has a full line of engine parts at good prices

MrLarkins · #26 (**permalink**) 06-23-2008, 09:54 AM

problem recap...

0 to 20 mph runs smooth as butter
20 to 30 mph not possible (it use to get up to 36mph, but not anymore).
20+ it gets more gas (hence the black, oily spark plug), but the motor won't accelerate past 20mph. It gets the shimminy shakes and acts like its flooded.

Pablo · #27 (**permalink**) 06-23-2008, 09:57 AM

So - you have tried the top slot for the little e-clip on the needle?

MrLarkins · #28 (**permalink**) 06-23-2008, 09:59 AM

no, someone told me to move it down 1...so i did, then i went down 2...when i get home (at work now, goofin off

) I move it up and post back

MrLarkins · #29 (**permalink**) 06-23-2008, 10:07 AM

Quote:

Originally Posted by misteright1_99

You are definatly lean... Look at the pic of the spark plug, Might want to raise the needle in the carby (lower the clip) one slot......Parts all look ok though. Also when you put the piston back in the cylinder make sure you line the opening of the rings up with the little pins in the grooves...

8oz @ 20:1 = 160oz of gasoline 128oz = 1 Gallon So 8oz of oil to 1 Gal and 1qt of Gasoline

Any QUALITY oil..... I use Amsoil Sabre....

here's the guy MISTERIGHT2_99!!!

misteright1_99 · #30 (**permalink**) 06-23-2008, 10:41 AM

Quote:

Originally Posted by misteright1_99

In this post Norman shows you the internals of the carb. You need to read it an familiarize yourself with it then you might want to try moving the clip ONE notch and riding your bike and see what you think. And then MAYBE try another slot and TEST RIDE ETC. Looking at that spark plug I think you are running lean so you should start with moving the clip DOWN 1 slot to increase fuel to air mixture....

Carburetor pictures how to install and rebuild

Quote:

Originally Posted by MrLarkins

i also moved the 'c' clamp to the lowest position in the carborator...isn't that suppose to give the most oxygen in the mix? i don't think i'm getting maximum combustion...lots of oily black on plug...and i mixed 4oz 2 cycle oil with 1 gallon gas, that's the right mixture, right?

Quote:

Originally Posted by MrLarkins

no, someone told me to move it down 1...so i did, then i went down 2...when i get home (at work now, goofin off

) I move it up and post back

Quote:

Originally Posted by MrLarkins

here's the guy MISTERIGHT2_99!!!

Read the first paragraph one more time CAREFULLY!!!!!!!