Hi all , i'm new here so i hope you will bear with me a little.I own a Toro 6.5hp self propelled mower which was purchased about 7 months ago .I has been working well and still is except for a knock in the engine after approximately 4 minutes of operation(when it heats up) The oil level is always good and i've since changed the oil but it's all the same,any suggestions ?Thanks to all.
Engine knock
- Thread starter rovi
- Start date
reynoldston
Lawn Pro
It sure sound like you got more then a oil problim. Time to pull ithe engine apart. Start with removeing the head and make sure you haven't got a carbon knock and go from there.
Shackelchevy77
Member
i agree carbon will heat up and cause spark knock and can also cause the engine to diesel but you probaly would not have that problem on an engine with a blade brake
reynoldston
Lawn Pro
Just quest, why not a engine with a blade brake? On top of that why couldn't that blade brake make a knocking noise? I also have heard a lot louder knock then a spark knock when the piston hits the carbon.
reynoldston
Lawn Pro
That would even be a better place to start looking for your knock for sure
thanks Duffer, that sounds like the most logical solution and thanks to every one also.
Shackelchevy77
Member
a blade break will stop the engine (most of the time if you stop the spark)
Shackelchevy77
Member
Sorry ill be more spacific the pad that enguages on the flywheel that stops the engine (a compliance engine)