Full throttle lag

[tundrabeagle3]

I have a predator 212 that hesitates a little before it begins to accelerate at full throttle. Does this mean that I am running to rich or lean? I cant tell by the spark plug as all my plugs are black from when i lay it down and oil gets into the cylinder.

 

[Nodroz]

Huh? How come you lay your engine down so oil gets in the cylinder?
As far as I know throttle response has to do with the air screw. Try adjusting that until it gets better.

 

[Doc Sprocket]

Tip #1- Don't lay it down like that.
Tip#2- Clean the plug, do a test run, then check it
Tip#3- If you suspect a lean condition, try a test run with choke partway closed. If things improve, you're lean.
Tip#4- Having crap all over your spark plug is not considered a performance enhancement.

Build a kickstand!

 

[tundrabeagle3]

Huh? How come you lay your engine down so oil gets in the cylinder?
As far as I know throttle response has to do with the air screw. Try adjusting that until it gets better.

sometimes i crash, flying over the handle bars and the bike stays running on its side (smoking)burning up oil until i can get up and ride it home. What do i set the air mixture screw for example at 2 turns outs ect?

 

[Doc Sprocket]

Well then- Tip #5- Tethered kill switch.

 

[jamyers]

Initial idle mix screw setting = 1.5 turns out, then adjust for best idle.

If its too lean / rich when running above idle, then you'll have to rejet

 

[Doc Sprocket]

Maybe. Check for fuel restrictions in line and carb first. Also look for air leaks.

 

[tundrabeagle3]

alright thanks guys, it seems to run best with with air/ mix screw out as far as possible. I'm guessing this means my pilot jet is kinda lean. I am running a 14cc head, k&n style air filter , with the stock exhaust. The main jet is a 90 and the pilot is stock. After a few hours of riding on it i got used to the lag it doesn't happen if I ease into the throttle, only when i go full throttle, is this normal?

 

[Doc Sprocket]

Have you tried it with the choke partially closed?

 

[devino246]

alright thanks guys, it seems to run best with with air/ mix screw out as far as possible.

That screw affects idle operation only.

 

[tundrabeagle3]

so then its the main jet? just got hit by a car and my cat is damaged!

 

[landuse]

so then its the main jet? just got hit by a car and my cat is damaged!

Sorry about that. Is your pet cat damaged?? or your kart

 

[tundrabeagle3]

thanks, i meant my cat mini bike

 

[landuse]

thanks, i meant my cat mini bike

That just sucks!! What happened?

 

[tundrabeagle3]

i was crossing the crosswalk walk and got hit,not sure what exactly happened because it happened very fast just glad to be alive and not have any broken bones

 

[jamyers]

OUCH!

Glad you're not hurt worse, did you get the number of the truck that hit you?