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stock cylinder compression


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Depends on what altitude you are at.

 

Right bone stock at sea level will be around 120-130 give or take. The higher you go in the mountains the less you will have.

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Depends on what altitude you are at.

 

Right bone stock at sea level will be around 120-130 give or take. The higher you go in the mountains the less you will have.

thanks man,

I'm right there at 120-125.

Got a minor problem.

starts an idles fine and runs strong but will sometimes die after returning from wide open to idle in the upper gears.

sometimes the right cylinder wants to drop off at 1/4 to 1/2 throttle but will come on and run fine from 1/2 to wide open.

I don't think its a fuel delivery or fuel issue in itself.

Carbs have been inspected and cleaned(no dirt or issues internally)

Float height is good.Pulled and inspected the reeds(none broke or missing)

Pulled left cover to see if there might be a crank seal issue,(did not see any residue or smell any fuel or oil.

The bike is 5 yrs old and I have freshend the topend which has maybe 40 to 50 hrs on it.I am religous about a clean air filter and I run yamalube 2r at 36:1.

I kinda scrath'n my arse here trying to figure this out! :confused:

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thanks man,

I'm right there at 120-125.

Got a minor problem.

starts an idles fine and runs strong but will sometimes die after returning from wide open to idle in the upper gears.

sometimes the right cylinder wants to drop off at 1/4 to 1/2 throttle but will come on and run fine from 1/2 to wide open.

I don't think its a fuel delivery or fuel issue in itself.

Carbs have been inspected and cleaned(no dirt or issues internally)

Float height is good.Pulled and inspected the reeds(none broke or missing)

Pulled left cover to see if there might be a crank seal issue,(did not see any residue or smell any fuel or oil.

The bike is 5 yrs old and I have freshend the topend which has maybe 40 to 50 hrs on it.I am religous about a clean air filter and I run yamalube 2r at 36:1.

I kinda scrath'n my arse here trying to figure this out! :confused:

 

Anyone have some Ideas.:wacko:

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Anyone have some Ideas.:wacko:

 

Have you tested out your electrical yet? Could be your stator starting to take a dump.

 

This just happen one day outa the blue?

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Have you tested out your electrical yet? Could be your stator starting to take a dump.

 

This just happen one day outa the blue?

 

No,

I have not and I guess I will have to buy a manual to do this as I don't have 1.:shootself:

 

I did discover that the carbs were not totaly in sync and we have them to a knats azz(eyeball), I know I probably need the carb sync tool from Fast.:blink: 1st I'm gonna run it tomorrow and see what happens since we got the carbs more precise.If no worky, Then I will look into the stator!

Thanks for the info dude!:clap:

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Have you tested out your electrical yet? Could be your stator starting to take a dump.

 

This just happen one day outa the blue?

 

Would this make 1 side run fine and the other not,or would it affect both sides?

I was having a prob with the right(now fixed,new pilot) and now the left is dropping out just like the right did.I also have a new pilot in the left.:angry:After I put the new needle and seats in both carbs,the left ran fine.

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Im sitting at around 1000feet elevation, and my compression on my 2003limited edition is 114psi and 115psi.... The engine

has never been apart, and it runs very strong....... Just installed a noss head, now its up to 150psi....... The cylinders still had the

crosshatch in them........ As for your missfire, dont forget to check out your reeds..........

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if i was you i would change the spark plug boots and plugs clean and sync the carbs and go from there. if it still happens i would alternate the spark plug wires and test the stator.also check all wires for loose connections and wear.

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Im sitting at around 1000feet elevation, and my compression on my 2003limited edition is 114psi and 115psi.... The engine

has never been apart, and it runs very strong....... Just installed a noss head, now its up to 150psi....... The cylinders still had the

crosshatch in them........ As for your missfire, dont forget to check out your reeds..........

Reeds are fine, Not cracked or broken, Can they become weak? They are 5 yrs. old with about 140 hrs on stockers.

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if i was you i would change the spark plug boots and plugs clean and sync the carbs and go from there. if it still happens i would alternate the spark plug wires and test the stator.also check all wires for loose connections and wear.

New plugs,carbs cleaned,Carbs were not even dirty (complete rebuild kit) and synch'd, plug wires switched (no diff)) and Source and Pickup coils test within speck from manual. This SOB! is kick'n my Arse trying to figure out!

Friggin 2 strokes! banghead

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