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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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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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

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SOURCE: Kohler small engine problem

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

Posted on Jun 11, 2011

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SOURCE: Kohler 5E, initially water pump

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...


Posted on Jun 15, 2011

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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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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.

Jun 04, 2016 | Garden

1 Answer

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.
Crankshaft big end bearing may be worn out.
Balance weights in motor may be loose.
Bore may be worn and noise is piston slap.

Aug 18, 2015 | Murray Garden

1 Answer

1998 Gmc safari 4WD knocking noise from engine

You'll need a mechanic to check it out. Could be a piston, rod bearing, or a list of other things.

Jun 12, 2013 | Cars & Trucks

1 Answer

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.

May 24, 2010 | 1990 Toyota Pickup

1 Answer

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.

It sounds like you have a seal problem and that is when you stop over night and the oil up top runs down past the valve seals and when you start it has adrop of oil going onto the piston,s and it burns that oil and also makes the compression a lot higher than it should be ,,causing the knocking and as soon as the oil burns up the noise stops.
Answer engine head job......

Oct 07, 2009 | 2004 Chevrolet Silverado 1500 Crew Cab

1 Answer

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

Apr 16, 2009 | Datsun Maxima Cars & Trucks

1 Answer

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.

Jan 03, 2009 | 2005 Saturn SC2

2 Answers

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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