Working on trail master gokart 150 cc put bran new carb on only start on full throatal but rev up wen rpm go down act like it missing let off gas shuts off
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Could be the transmission.Make sure it is full of fluid. Hold your foot on the brake and give it some gas with the other foot. If you feel a miss, then it is a miss fire.
There is not an actual rev limiter. The top end is controlled by the carb. You actually want it to sound a bit rich at full throttle so that it has enough fuel when cutting under a load. What causes me some alarm is the revving up part. If it revs too fast that is a lean condition and can quickly ruin the piston and cylinder much like running straight gas. A torn intake boot can cause this. The high speed spec for the TS400 is 9,600 rpm + OR - 500 RPM. Your saw may not have a needle to adjust the high side as some have only the low speed adjuster. Also when you disassemble and clean the carb always use a new kit with the gaskets and diaphragm. Any Stihl dealer can furnish the kits and they aren't terribly expensive. Often between $10-20.
check the connection of all of the spark plug wires to the plugs, you may have put a wrong one on, when cleaning the gas tank as well it can dislodge a lot of dirt, cleaning injectors and a new fuel filter could solve the issue as well
i dont think its rev box.(rev box just keeps engine from reving over a certain rpm) could be bad gas or water in gas, also have you checked those valve clearances lately?? 0.003--0.004 on filler gage
unleaded fuel is notorious for going stale,and it can leave a resinous coating in the carb-try running the saw on half choke with new gas and less oil eg 50 to 1 for say ten minutes,this should clear the gunk out-if this does not work,you have two choices-strip and clean the carb,or adjust the H (high) scew on the carb anti-clockwise by a quarter turn a time till it revs out full bore-good idea to remove the chain and wear ear defenders when adjusting-and always use a chainsaw at its max rpm,or you run the risk of "kickback"
×