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Why does my 12.5 hp Briggs starts and idles fine but will not idle down after mowing yard for 45 min - 1 hr?
Wiki User
∙ 17y ago
If you are meaning you can move the throttle and it makes no changes at all on the engine rpm's, reach on the carb itself and move it there, in case the throttle cable is not properly working...If you move it directly from the throttle shaft on the carb and that makes no difference, chances are you have a internal problem associated with the governor sticking, so beware. You can also quickly tell this by grabbing the governor shaft that comes out of the block and moving it to see if it changes the rpms any, this part does not move a great deal at all, but can change a engine rpm by 4000.
Wiki User
∙ 17y ago
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The car starts fine but idles up and down then stops running?
Check the air filter, it's probably clogged.
Idles at 3000 will not go down?
idles at 3000 will not go down 1993 grand prix gtp
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Look for a vacuum leak.
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I also wish someone would answer this question as my 1997 Ford contour does the same thing. It shakes and vibrates very bad when it idles and it idles really low. They set the idle up to make it so it wouldn't die so now when I start it it revs up really bad then it idles down then it idles down to low and shakes I also wish someone would answer this question as my 1997 Ford contour does the same thing. It shakes and vibrates very bad when it idles and it idles really low. They set the idle up to make it so it wouldn't die so now when I start it it revs up really bad then it idles down then it idles down to low and shakes
2000 xterra idles rough in gear but idles smooth in neutral Runs great down the road?
crankshaft sensor going.
I have an 1992 Oldsmobile 88 It starts and idles good but will die win I drive the the car down the road what do you think is wrong will it?
Could be a plugged fuel filter, time for a good tune up.
What is making your Briggs and Stratton 500 run rough the oil was overfilled so I poured off the excess oil cleaned the spark plug and airi it still idles in an up and down breathing manner?
Erratic idling, surging, and the "up and down breathing" are usually caused by a dirty or clogged air filter.
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It could be a dirty air filter or a dirty throttle body.
Your 87 Nissan truck idles up and down?
check for vaccum leaks.
What was the machine gun used for?
Mowing down or suppressing large groups of enemies.
99 Chevy silverado 4.8l it idles fine until you drive it then it idles up to 15-1700 rpm and wont stop till you shut it down then when i start it again it idles normally until i drive again why?
Probably a bad idle air control valve.
