I have an older 3W 35cc gas engine that was running fine a few weeks ago, but now it will only start in short bursts like when being choked.I put in a new carb kit and still the same result, then I sent the ignition module back to 3W for an inspection and all was well.I have new gas and the plumbing is fine also. Ign module requires a 4.8v battery pack and the one I am using is @ 5.1v. I have a new spark plug also ..exactly like the factory plug. Any suggestions, or do I need a new carb?....Thanks...Kev