Question about AJS Motorcycles
If it seems like fuel starvation it could easily be. Check the float level in your carb(s). Is the fuel valve (petcock) vacuum actuated? If it is, this system may have malfunctioned. Either way, with float bowl(s) off gently push the float up and let it drop down. You should get gas flow when the float is down and it should stop when it's up (don't push too hard as you could put it out of adjustment). Also check the main and pilot jets to see that they're not clogged.
Posted on Jun 19, 2017
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Posted on Jan 02, 2017
you have fuel burning in the pipe (unburnt in the cylinder and a leak in exhaust) or an incredibly lean mixture resulting in high exhaust temperature, would recommend that you 1st make your air fuel mix richer (worst that happens is foul plug) both in high and low speed mixture. This situation just happened to me after I started my 2003 polaris predator 500 after it had sat for almost three years. I managed to clear the varnish in the carb by cheating (not the recommended procedure but it worked) by draining fuel tank adding new fuel and stabil brand fuel stabilizer (it seems to help with old fuel and old suel deposits as well) and pulling air cleaner so that I could choke carb by hand and force a fuel draw. When she 1st fired up and I pushed the choke in I got a shock when I looked at the pipes and they were glowing cherry red. I began to fear for the safety of the exhaust valves and forced it to run in a very choked condition until the carb cleaned up a bit and it started to run rich and I could push the carb in a bit. hope this helps you out a bit, feel free to call me if I can be of further service 928-580-2298 Sean
Posted on Oct 09, 2009
usual problem ,valves in injector worn for the fuel pump.easy quick fix this one ,fit a non return valve in the inlet pipe,check flow direction on valve when fitting and evan better as well is another in the bleed off return pipe .valves available from a motor factor or a specialist garage like bosch or lucas ,cut pipe and fit the valve with a piece of rubber pipe to connect the valve in line.or listen to the people who want to milk the golden cow and have the whole injector pump overhauled .
Posted on Dec 23, 2009
Remove the air filter and set aside.
Take a can of carburetor cleaner and spray the inside of the carburetor.
Let it set for a moment and then try starting the engine. It should run a few seconds. Repeat. When it starts squirt a small shot of cleaner in the carburetor to keep it running. That should remove the varnish the gas leaves as it evaporates over the winter.
If it still won't keep running then there is trash in the float bowl plugging the needle valve seat and the jets.
1) Turn off the gas or remove the gas line and plug it with a small screw or stick to keep it from leaking out of the gas tank.
2) Look on the bottom of the bowl for a nut .
3) Remove the nut and drop the float bowl.
4) Carefully remove the pin holding the float and needle valve assembly.
5) Take the carburetor cleaner with the straw it comes with and spray every hole in the carburetor to clean the jets . (up through the needle valve seat, down top of the carburetor , see a hole, spray it with the cleaner.)
6) Clean the float bowl.
7) Reassemble and make sure the gas isn't leaking and try to start it again.
Posted on Jun 06, 2010
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