KOHLER Engine won't start - no spark
gplemos
10 years ago
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Comments (6)
gplemos
10 years agoRelated Discussions
Lawnboy M21ZMRD has spark but won't start
Comments (10)The coil has a starting leg and a running leg which means that the starting leg of the coil fires at startup when the flywheel magnets pass the coil slower and then the running leg kicks in which fires when the flywheel passes much faster thus causing the engine to run a high RPM. You say you have good spark at first then as it starts to stop. Its possible you're running leg of the coil is bad. Take the machine into a dark place and the spark must be good for the entire pull of the rope not the first and last. Also if I were you I'd check to see if the flywheel key is not sheared. To check remove the flywheel and there is a tapered key that fits in the groove, see if it is bent or worn if so replace, it could also cause the probs you are having. Is the spark plug wet with fuel when you have done these tests? If not than you may have a blocked jet in the carb even if you think its clean the smallest particle can cause trouble sometimes. Let us know what you find. Neal...See MoreKohler Courage20 won't start and spits gas
Comments (3)Also if it has over head valves, check the adjustment. Valve adjustment should be done every year. BG...See MoreBriggs & Stratton Getting Spark & Fuel - Won't Start
Comments (6)OK, I see in the IPL that item # 238 (Briggs # 691843) is the cap you referred to. Thank you for outlining the part about "holds 80 psi". Now that you have confirmed what I thought you meant, I need to ask, is 80 psi, the pressure you are applying to the cylinder (I presume you have an adapter air fitting threaded into the spark plug hole) with an air compressor, or is the compressor SET AT A HIGHER psi........and 80psi, is all the cylinder will maintain? I hope you understand what I am asking but let me put it another way. While you have the source of compressed air connected to the cylinder, does the air compressor cycle on and off to rebuild air that is leaking off "somewhere"? If the air compressor DOES cycle on and off, but you don't have any air leaks in your compressor air hose or plumbing, then the air must be leaking out of the cylinder somewhere. An "air leakdown test" is not simply to connect air to the cylinder and see how much pressure the connected air compressor is capable of maintaining (on the gauge). An air leakdown test must really be done with a gauge that "measures the PERCENTAGE of leakdown, even a "good cylinder" has "some leakage". It is neccessary to determine if the "actual leakage" exceeds the "allowable volume (%) of leakage" An air leakdown test is also conducted to determine WHERE the air is leaking from (valves? piston or rings? head gasket?). So, your answers to the questions of just how you are achieving the "80 psi for 30 minutes" will allow us to get past that issue as you may well be getting a false indication of "health" from what you have been doing there with the air pressure. During an air leakdown test, you should be listening to for air escaping into the exhaust system, or the intake manifold, or into the crankcase. Of course, the crankshaft must be stopped at the correct position AND HELD there so it cannot turn when the air pressure is applied to the cylinder. To "listen" for escaping air, I use a 2 foot length of plastic tubing (5/16" or 3/8" diameter, at auto parts store or plumbing supply). Place one end of the tubing into the muffler or exhaust port (if muffler is removed) and hold the other end close to your best ear. Any air leaking past the exhaust valve will be heard through the tubing. To check intake valve, place one end of tubing into the carb throat (with throttle wide open) or intake port (if carb is removed). Air escaping past the intake valve will be heard through the tubing. To check for air escaping into the crankcase (because of piston, rings, or head gasket defects), take the oil level dipstick out and listen for escaping air coming from the dipstick tube, or you can hold a small "flap" of tissue paper over the open dipstick hole, if significant air is coming out of the dipstick hole, it will lift the tissue off the hole. Wipe off the dipstick hole before laying the tissue in place so it won't just "stick" to any oil. OH YEAH, please post here and ask Mr. Walt Conner to post his "cryptic" e-mail address so you can contact him for HIS instructions on adjusting the valves. Walt is one of the primary Briggs contributors on this forum and most times Walt's instructions are better than Brigg's. It would not be "proper" for me to "set you up" with his e-mail as Walt has his own way of handling that. However, if you search in this forum and find a post where Walt "furnished" his e-mail address to another member, I'm sure he would be OK with that. It's just polite and PC to "ask first". Here is a link that might be useful: 313777 IPL...See MoreKohler 24hp engine on Husqvarna RZ5424 won't start
Comments (2)Good chance that backfire caused the engine's flywheel key to partially/fully shear, throwing timing off. If you are sure of good fuel flow and presence of spark, would download the free service manual from the Kohler website for that engine and give it a go - if you are the shadetree mechanic type. OTW,, shop time. If you do pull the flywheel, make sure all is pristine clean before reassembling and torque to spec...good luck....See Moregplemos
10 years agotrmerkel
6 years agoDavid Hoffpauir
6 years agossewalk1
6 years agolast modified: 6 years ago
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