The motor chokes at full throttle because either the exhaust valves are bad and cause the motor to loose compression at full throttle or the carb has an air leak.
no
It depends on what model the mower is. Most of the newer mowers have the choke incorporated with the throttle. As you raise the throttle lever you will get to a part that it fits in a small grove. That is full throttle. Everything past that is the choke.
Do you mean the GM (chev, etc) 3.1 V6? It's a throttle body injection engine with no choke.
To activate the automatic choke on a small engine, such as those found in lawn mowers or chainsaws, simply start the engine. The choke is usually controlled by a mechanism that senses the engine's temperature or throttle position. As the engine warms up or the throttle is applied, the choke will automatically adjust to allow more air into the mixture, thereby reducing the choke's restriction. Always refer to the specific equipment's manual for precise instructions, as designs may vary.
Loosen the the screw5/16" socket) at the control panel at the left rear of the engine. Set throttle to full speed and move the cable housing upward; if it works the choke also, move it until the choke is just ready to be engaged. Then tighten the screw to clamp the housing.
To hook up control cables to a Briggs & Stratton model 31C707 engine, first, identify the throttle and choke control levers on the engine. Attach the throttle cable by connecting it to the throttle lever, ensuring it moves freely when the control is engaged. For the choke cable, connect it to the choke lever in a similar manner, making sure it can fully open and close the choke. Finally, secure both cables to prevent any interference with the engine operation.
Engines with automatic chokes also usually have an automatic throttle which is supposed to run the engine at the best speed. Changing the choke would probably also require coming up with some way to change the throttle.
Clean and adjust the carburetor. Also clean the air filter.
Your 1987 Astro might go full throttle when the engine is started because the throttle is sticking. This could also be a problem with the starter or the ignition hanging during the start.
COLD ENGINE STARTING OR STARTING AFTER REFUELING --Set unit on a flat surface. --Slowly press the primer bulb 6 times. --Move choke lever to FULL CHOKE position. --Squeeze the throttle trigger fully and hold through all remaining steps. --Pull starter rope handle sharply 6 times. --Move choke lever to HALF CHOKE position. --Pull starter rope handle no more than 6 pulls, until engine runs. --Allow engine to run 10 seconds, then move choke lever to OFF CHOKE position. RESTARTING A WARM ENGINE --Move choke lever to OFF CHOKE position. --Pull starter rope handle until engine runs. --If engine does not start in 5 pulls, follow instructions in STARTING A COLD ENGINE.
If your 2004 Jeep 4.0 engine has cranked up at full throttle, take it to a professional mechanic.
switch on push primer bulb or choke the engine set throttle pull rope or turn key