Question about Kohler 22HP Replacement Engine SV620-3202

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My lawn tractor makes a knocking noise when starting

Knocks when I start and kill the engine. Burns oil on startup. Runs good otherwise. The problem started after I hit a root last year. Also, it takes more cranking before it starts.

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  • Kohler Expert
  • 573 Answers

It sounds like a valve rod, or you can have damaged a con rod.

Posted on Nov 22, 2013

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Posted on Jan 02, 2017

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ROMOAS
  • 97 Answers

SOURCE: kolher magnum 25--worked great last year,now

a stuck float in the carb can cause this as well as old gas do to schlack build up from gas evaperating the carb should be removed and cleaned with carb cleaner and old gaskets replaced a carb kit will run about $20.00 and avail from small engine shops.
the engine number will be needed for the right kit at the bottom of the engine where it mounts there is a flat boss with a number stamped that will be needed for parts.
when the engine is stored the best thing it to run the engine and shut off the gas and run till it stops this will get ride of the gas in the carb there will still be a small amount left in it but follow recommended long term storage prep from the manufacture. hope this helps

Posted on Aug 31, 2010

  • 1 Answer

SOURCE: Kohler small engine problem

1989 Kohler 20 backfires through the exhaust. What are the possible causes?

Posted on Jun 11, 2011

heatman101
  • 43501 Answers

SOURCE: Kohler 5E, initially water pump

Hi,
You did not say what fuel you running the motor on??? It sounds like it may be LPG or Propane.... is so then it seems as though you do not have enough surface for evaporation...

heatman101

Posted on Jun 15, 2011

ericmorris69
  • 75 Answers

SOURCE: White smoke pours out of exhaust on my SV730 Kohler engine when I start it. Then it stops and the engine runs good. I think it is a bad valve guide or a valve isn't seated right and oil is running

If you filled it up with oil yourself, then you might have put in too much, Ive done that a few times myself,, try ansd drain a little, about two to three ounces, then try to start it, make sure to do this when its cold.

Posted on May 09, 2012

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1 Answer

V-twin 18 hp knocks at sslow engine speed is this normal.sounds like rod.runs fine at mowing speed


no its not normal. make sure it has oil in it. the correct oil and good oil. be sure valves are set correct.

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My murray lawn mower has a knocking sound when it is on


Check oil level in engine, may be low
Use standard unleaded fuel, never ethanol blend.
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You'll need a mechanic to check it out. Could be a piston, rod bearing, or a list of other things.

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My 1990 toyota 2.8 pickup ( african import) got low on oil without indication and i thought had seized. got it back to the garage and sorted out pipe ,oil indicator and refilled with oil. It started up and...


Damage has been done to the engine, the noise you hear are the piston rod bearing ( knocking lower part of engine ) you can try putting in a crank kit and have the piston rods mechin but will not last very long, will start to knock again, best bet to replace engine,good luck.

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Recentley when I start my 2004 chevy silverado truck, it knocks and blows smoke for a few moments, then it runs fine. I have had the vehicle for 6 months.


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Oct 07, 2009 | 2004 Chevrolet Silverado 1500 Crew Cab

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Engine knocks when startup but disappears after engine warms up.....could the oil pump be defective.......what about the knock sensor....


Its probably lifter noise,check what grade of oil is in the car or change it to a slightly thicker grade,i would expect that the car has a lot of mileage on it,if the oil light goes out quickly on the dash when starting its not the oil pump(very uncommon),knock sensor is for ignition timing to stop pinging,nothing to do with your noise,generally its engine wear

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Engine knocks at startup


It could be the oil pump, its not a bad idea to check the type of engine oil you are using maybe you can go a little higher in grade,
you can also try to use STP Engine oil treatment for petrol (gas) as addative to the engine oil it may help.
Hope this helps!

Feb 27, 2009 | 1978 Pontiac Bonneville

1 Answer

2000 saturn upper engine knocking


noise is caused by lack of oil to lifters, or worn timeing chain. if noise is from lifters it should go away wit proper oil level, if still there needs timeing chain.

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Engine knock noise on cold startup


these 3.3l engines are equipped with timing chains. if vehicle has prolonged down time, typically more than 4 hours, vehicle makes a chatter until the timing chain tensioners put tension on the chain. you will need them replaced.

Nov 29, 2008 | 2006 Hyundai Sonata

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