i have a toro rear engine zero turn. its a cheaper one and the drain plug on the engine is right behind the saet. i lifted up the front end so the oil would drain to the back of the mower. doing this not all of the oil drain out of the engine because it was all it the back of the engine. stupid mistake by me. well i went to add the new oil and there was way too much. i think some of it got in the cylinder. when i take the spark plug out it will turn over and at the right speed. but when i put the spark plug back in it will still turn over but very slow. it has spark and the battery is still good. the electrical is all working great. not sure what to do next. any help on getting this started would greatly appreciated.
its a 16 hp briggs
thanks in advance!!!
#2
reynoldston
If it was me I would start my getting the right amount of oil in the engine.
I can't see that the carburetor has to do with it turning over slow with the starter. If you turn it over by hand does it turn over hard. If so you must still have oil in the clyinder. If this is the case maybe you can tilt the mower to get all the oil out. If it turns over normal by hand but slow with the starter I would say you have a starter problim??? You have to understand that I can only guess over the cumputer.
it turns over slow with the spark plug in. when i take the spark plug out it turns over like normal. im thinking it might have something to do with compression. i havent tried to turn it by hand yet
it turns over slow with the spark plug in. when i take the spark plug out it turns over like normal. im thinking it might have something to do with compression. i havent tried to turn it by hand yet
Stop and think what makes more compression. Even if the valves don't open you are going to have just so much compression. And are the valves opening and closing? What would make more compressing? I would say the cylinder chamber would have to be filled with something? Oil, gas, carbon, old sock ??? I also believe a lot of engines have a compression release built into the cam shaft just for starting. maybe? What that does it hold one of the valves open just little only when you are starting the engine to release a little of the compression. If it is compression related I don't know what else it could be?
#9
bakerg
The engine will turn over easy without the plug because you are not building up pressure in the cylinder because the air escapes through the plug hole. With the plug in it will take more current to turn the motor over because you are building compression. Try jumping your battery with your car and see if the engine turns over faster.:biggrin:
The engine will turn over easy without the plug because you are not building up pressure in the cylinder because the air escapes through the plug hole. With the plug in it will take more current to turn the motor over because you are building compression. Try jumping your battery with your car and see if the engine turns over faster.:biggrin:
Now we are jumping from too much compression to electrical what next. Maybe take a compression test, test your battery, if that is OK see how much of a voltage drop you have at the starter or test how much of a amperage draw you have. It is getting beyond just guessing at things and start doing some testing which should have been done in the frist place.
What in the world is a weak starter. I surly would want to make some test before spending money on a new starter. Why is the starter weak? Low voltage to the starter, voltage test? bad cables or starter solenoid? battery? bushings worn inside starter, amperage draw test Mowerguy said not electrical so I would add a compression test or amperage draw on top of it all. That will tell you if you have too much compression. Stop all the guessing I have found that the guessing game can cost you money with unneeded parts.
talked to a local lawn mower shop yesterday. just said too much oil in the head which wont allow the spark to ignite. thats what i thought was the problem from the beggining. he said spray some carb cleaner in the carb and in the head
talked to a local lawn mower shop yesterday. just said too much oil in the head which wont allow the spark to ignite. thats what i thought was the problem from the beggining. he said spray some carb cleaner in the carb and in the head
I agree with him to a point. but adding more fluid into the engine isn't going to help the matter. Maybe a new spark plug and a very little starting fluid?
it has a new spark plug. and his solution didnt fix my problem. it will do one complete cycle. but when it builds compression on the second cycle it completely stops it. so maybe one of the valves is sticking not allowimg it to relieve compression during start up. i think im gonna break down and take it to someone with a little more knowledge.
it turned out to be simple. took the valve cover off and the intake was almost 4 thousandths out of adjustment. so the timeing was off. i put it on TDC and backed it off about a half an inch and readjusted the valves. new valve cover and spark plug and it started right up
