Banshee won't crank over

[swilerc]

So its getting spark and getting fuel but it won't turn over. What do i need to do? another question my carbs are just pouring fuel out whats the fix there to.

[wayne_smith97]

Pull the carbs and clean them real good. Inspect the needle and seats. Clean the seats with a q tip and toothpaste. The paste kind not the gel kind. The set the floats per the manual. Off the top of my head I think it's 20-22 mm

[swilerc]

i have cleaned them through a parts washer and the needle is one the second one from the top and the screw is turn 1 1/2 turns. 

[trickedcarbine]

Choke tube in, slides correct, bowls on the correct side, air screw isn't over adjusted, choke plunger isn't gross, all ports blown out with air, spark is bright blue and consistant?

[Mr1Hundred]

yeo i had the same problem, constantly cleaned my carbs, had gas air and spark and it wouldnt fire up,   GAP YOUR SPARKPLUGS, just widen them with a screwdriver

[trickedcarbine]

^ super genius

[Mr1Hundred]

for real, well atleast it starts now

[tfaith08]

Gap them to what, may I ask?  What is your theory behind why a larger than normal gap works?  I know the answer to this, I just want to hear an unadulterated version that differs from my ideas before I chime in.

[Mr1Hundred]

idk, but all i know is when i opened them up a bit it started 

 

gaped them with my screwdriver, didnt measure shit eyeballed everything 

 

bigger the gap, more air/fuel mixture comes into contact, idk?

[tfaith08]

That holds true if there is actually enough juice behind the spark to get it to jump a huge gap.  Combine that with the typical engine that won't start (flooding), and the jump is almost completely impossible when fuel is providing a path for the electrons to travel through. 

 

Allowing the plugs the chance to let the gas evaporate off of them when you had them out or knocking some carbon off of yours is essentially what happened when you used the screwdriver.  Opening the gap is great for low throttle, low rpm, low power response.  Not so good for anything else. 

 

That's why you see threads all the time that say to gap the plugs to .028.  That's also why some aftermarket coil companies advertise that you can open the plug gap up more.  The larger the gap, the more power you need behind the spark. 

[trickedcarbine]

Most high performance two stroke stuff I see has a gap of 20 thou or less.

[oldskool]

usually run pick-up gap and plug gap the same. .018 to .019