Thanks reddragon that seems to be my problem. After i cut for 30-45 min I shut it off to re-fuel and rest for a drink, Will not start until it cools down. I've cleaned the carb, change the spark plug and checked the spark(cold). If i take the plug out(hot) I can spin it fast enough to get a spark but I'm an old man with one lung and don't think I can spin it fast enough hot. Maybe it's time to start repairing the electric start also.
Craftsman 6.5 hp quantum walk behind. If you have any other ideas let me know. I have a hard time pulling the rope and looking for a spark at the same time especially with the plug in. When I hold the plug in my hand I can feel the difference hot vs cold, but as I described in earlier thread using this method lately I have developed a stutter in my voice.
#6
reddragon
this is a great little shortcut tool....just clamp it to engine ground where you can see it....[best in the dark].....and of course the spark plug pliers....so you dont pull a Ben Franklin:laughing:.....vapor lock comes to mind ....but that wouldnt come out of nowhere ........except...once i worked on a mower that caked grass filled in the cooling fins ..driving the temp. way up...and that cooked all the carb gaskets....keep in touch:wink:
The old man just broke down and bought a spark tester. It looks just like the one in reddragon's picture. I tested my coil cold plenty of spark, cut grass until time to refuel the grass was wet so the engine was plenty hot. Filled it up checked the spark, it had good spark but wouldn't you know it, it cranked first pull. I'll have to wait and try it again later. I'll let you know.
The 6.5 hp B&S Vanguard on my tiller has no spark. I have tried two replacement coils. A small engine service technician told me that I probably ruined the hall effect switch. I don't see how that is likely. I have tried leaving the kill switch wire open. No spark, hot or cold.
Whiteshu, please post the model, type and code numbers for your engine. With them we can tell whether you have the correct coil. Second, post the part number of the replacement coils and where you purchased them. If both were purchased on Fleabay or AmoScam, the is a definite possibility that they were bad before you installed them. 90% of the techs on this forum never go there, except in an emergency.
Swamp Fox, do you have an autochoke on this mower? If you have spark but it won’t restart when hot, it could that your choke is closed. See the thread titled Briggs auto choke, Tiger Small Engine gives a great explanation of the system and offers some advice about dealing with the hot restart problem.
Just reread this thread and I see there are at least two people who have different problems posting in the same thread. That is a NO-NO, as it gets very confusing for everyone. Whiteshu, the first thing I would do is get a new mechanic, as he has no idea what a Hall effect trigger is or where it is located. The coils you purchased are the correct coils for your engine. Are you sure that you mounted the coils correctly? The kill wire tab on the coil should be down and the air gap should be .010”. Double check both.
SwampFox, the condition you described is common and know to techs as a hot short or hot open in the coil. Fix is to replace the coil.
Thanks for that gentle scolding. I thought my problem was similar to those posting. I would like to benefit from this website while following the rules. Please suggest away to post my problem.
Just start a new thread. Include all engine and unit numbers, plus the best description of the problem and what you have done to this point to resolve the problem.
