my son's 110 cc dirtbkike will not stay running?

Question

the bike will idle fine but when you give it gas and try riding it it dies within a few minutes. we have changed the plug, gas, and even the carb. what else would cause this to happen and how would you fix it? thank you to anyone whoi respones.

Answer 1

I'm no mechanic, and you may have already found the issue. But, we had a similar issue with our '96 Road King (Harley). I know that's different than a dirt bike, but it could be the same issue. We took it to a Harley dealer and for a couple weeks, they couldn't figure out what the deal was. (Hooked it up to a scannilizer and everything.) Turned out...it had a bad battery. (It was complicated, stuff inside the chambers.) But for what turned out to be a simple solution, no one thought of that.
A battery is fairly cheap, try switching that out.

Answer 2

Always give year, make, engine size and model # when asking questions. We need all of that info to give an informed answer.
2 & 4 stroke engines can have similar problems, but require different repair procedures.
The year of the bike will determine if the top end needs repair (cylinder, piston & rings).
Check the compression.
If it's a 2 stroke - check the reed valves.
Check the air cleaner - clean or replace as necessary.
If it's a 4 stroke - adjust the valves.
When the engine dies, how long will it take till it can be re-started?
If it takes a while - could be a bad coil.
Have a good spark plug handy.
When the bike stops - put the good plug in the spark plug cap - lay the threads of the plug against a metal part of the engine and try to start the bike to see it the plug is getting spark.

Answer 3

If it's a decent brand dirtbike I would look at buying a manual if you want to play a bit more before you go to the mechanic.
The manual should carburettor tuning specifics to tune the bike to the right conditions. If you are in a high altitude area this can affect performance!
Have you tried the fuel filter? I know you have chaqnge the plug, the gas and the carb but I would look at the fuel filter in-line and if it has one, the one in the tank where the fuel cock is!
It deifinitely sounds like a fuel problem. Does it die when he starts to build up revs?
If so, the bike is starved of fuel and this would directly relate to a blocked fuel filter, you would hope!

If not, try the manual. It's a good source of info!

Troy.

Answer 4

Check out the fuel issues offered first. Then:

It could be a fouled plug, excessive spark plug gap, or a weak ignition. It will fire fine under low cylinder pressure, but die as the pressure increases through acceleration.

Get a new plug, and "under" gap by .05" or so. If it runs okay, gap the plug properly. If it still runs okay -- WoooHooo! If not, check the wiring for cleanliness and the rotor and stator for tightness, correct resistance, etc.

My 2c

Answer 5

Reading my 2006 owners manual for Patrol Model the answer to your question involves cleaning or replacement of fuel filter. To fix your problem I'd suggest looking at Source
provided and gawk at the films. Can't hurt.

Answer 6

You might also check the exaust to see if it is plugged or restricted. If the air cant leave the moter dies.

Answer 7

Might be timing. or advance . you should really say what make model and year next time makes it a bit easier.
if you changed the carb, I wonder what prompted that. All carbs have internal adjustments like float, needle idle screw etc.
good luck

Answer 8

check the air filter....

Answer 9

you might might need to recharge it for a week or so or maybe need to buy a new one!!!!!!!!!!!!!!!!!!