View Full Version : B&S Intek troubleshooting
Need a little help on my riding mower. Just rebuilt the carb. New gas. Engine starts up fine, runs for about a minute and then dies. It will start back up and then quickly dies again. I noticed the plug was an autolite. I will change it out to RC12YC tonight. Any ideas? Could it be the plug? The carb has an adjustment on it but not sure if this is the problem. I was thinking maybe the fuel solenoid may be not working but I checked and it appears to open and close.
Any help would be appreciated.
The engine numbers are:
08-04-2010, 12:33 PM
Can you slowly apply the choke and keep it running ?
If so you missed a port/jet or something in the carb, If it's a Walbro make sure the jet on the side of the boss where the float bowl nut screws in is fully open. If it's a Nikki make sure the jet in the bottom of the white plastic transfer tube is fully open.
Nope. The choke won't control the shutdown. I need to verify if the gas cap is still good. Maybe it's not venting. Maybe the coil? It purrs real nice for about a minute and then just dies. Will start back up an immediately dies.
08-04-2010, 05:45 PM
Not likely gas cap, It takes a few minutes for the tank to pull a vacuum. What brand machine is this engine on ? Model and serial number ?
Murray, Model 425000X8A, Ser. 7477851631D070. Yr. 2003
Just had her running for about an minute or so. Then she died. Went to pull the plug and plug wire was too hot to touch. Maybe the ingnition coil?? I put a spark tester on her while hot and no spark and then a little. So I think I may have solved the problem. Maybe....
08-04-2010, 08:32 PM
It may be the coil but I don't recall one dropping spark that quick after start-up ?
Just for giggles disconnect the black kill wire between the engine and mower harness and give it a try, This will eliminate a possible safety switch issue and further point to a faulty coil.
08-05-2010, 01:16 AM
Does it have an oil pressure or low oil shutdown switch ? It could be low on oil and Some engines will override on start then shut down if low or the switch is bad.
08-05-2010, 08:44 AM
How about your fuel filter, also depending on the age of the fuel lines...
What you might do is with a handy fuel-resistant container unhook the fuel hose at the carb's end
and while catching the fuel with the container is see how it flows through.
08-05-2010, 11:06 AM
This may seem like a stretch, but you may want to check for a malfuntioning fuel solenoid. Some solenoids are grounded with a separate wire to the engine block and you could have a bad ground although it's not likely that the condition your are experiencing would be so consistent with a bad ground.
It would appear to me that the engine is running until it empties the carb bowl so it would seem to be a fuel supply issue. Do as suggested above--check fuel lines, fuel filter. obstructions in tank, etc.
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