Top end?

[93blueoval]

Hey i have had my banshee running for about a month now. it seemed to run fine until yesterday. i started it up and it just wasnt running right, when i rap it out through the trails, or up a hill it stalls and sputters, it has no power. today i went to a couple of dunes and was getting worked by warriors. i couldnt even shift into 2nd, and i had to dump it in first to even move. I dont know what the problem is, does anyone had this problem before, should i rebuild the top end?

[BenBB]

It could literally be a million things, from bad fuel to a twisted crank, but all ya can do is start into it; for the topend, check the compression. Depending on your elevation you should have around 140 psi on each cylinder. In general, less than 100psi or more than 10% difference between cylinders is time for a topend.

 

If that checks out, make sure the air filter is clean, got fresh premix fuel, and check your jetting, it may be something simple so start there. Good luck.

[banshee76179]

Word! do a compression check first B4 U tear the motor apart..

[93blueoval]

can i use a compression guage from a car, or not. If not where do i pick up a compression tester?

[richybanshee]

Check if fuel or carbs are not dirty. Drain All fuel, put new fuel and sparkplugs with cleaned filter. I think that when banshees have low compression they just do not have that strong, arm ripping low end power but they will still run okay not as crappy as you mentioned. Also check if sparkplug coil is working properly, it may be possible that the spark is not so intense as it is supposed to be.

[BenBB]

Yes an automotive tester is fine, get the best one you can afford, all it needs is 14mm spark plug threads, preferably a "long reach" so the threads match the spark plug, got mine at Sears for like $30. Make sure you hold the throttle wide open and don't stop kickin' until the needle stops moving...