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Hi Martin, check the level of the oil in the engine, if the level is low, the machine has been tipped on the side and the oil has gone over the head. Make shore that engine is on the flat ground when used or transported. Tilting the unit over 20 degrees will cause the oil to go over the head. Two ways to fix the problem pour some petrol in the cylinder, put a rag on the spark plug hole and pull the starter rope few times to clean the cylinder, repeat the same until the cylinder is clean. You have to check the carbi for oil getting into it, and clean it. Make sure you clean all the petrol before attempting to start the engine. It is a bit messy but not require to pull the engine apart. The other way to clean the oil is to remove the cylinder head off and clean it, its the proper way of doing the job, but requires a lot of dismantling. Hope this helps. Cheers
The Honda 8HP motor will work OK with 90 psi compression but it's on the lower end of good. Most likely it will need new piston rings and possibly the cylinder resurfaced in the near future. Low compression could also be caused by valves not seating completely either from wear or carbon buildup. Depending on what you are looking to spend it may be worth your while to remove or have removed the head to inspect the valves and cylinder wall.
you need to remove the pump then the end cover from the engine remove the cylinder head the unbolt the connecting rod push out the piston hone cylinder and then wash the motor out with soap and water i use tide clothes soap and hot water put it back to gether now why does it smoke check the head gasket the over head engines blow head gaskets and **** oil from the crankcase
First things to check is are air filter and exhaust. If there is signs of oil then the unit has been tipped and you will probably need to strip the cylinder head to sort it. Also check engine and pump oil levels and start the machine if you are allowed to. If it starts after a few pulls then you have a good chance of it being ok. White exhaust smoke is bad if constant as it is oil burning. Blue smoke isn't quite so bad as it indicates (probably) rich fuel/air mixture. Puff of white smoke that doesn't stay constant is also a sign that the machine may have been tipped at some time and it is just the oil residue burning of the cylinder head.
Hi and welcome to FixYa, I am Kelly.
Back firing can be caused by 2 things... A spark plug / ignition breakdown or.. a sticking engine valve. Before you do anything change the spark plug. ( BPR5ES ) or equivalent. A bad spark plug will still arc at the cylinder head from the outside of electrode to the cooling fins but will not jump across the inside of electrode when installed.
If the unit has been in service for a few years the valve seats tend to get carbon on them and makes it really difficult to get it started. A single backfire can cause it not to start for hours as the backfire loosens carbon in the cylinder head area and prevents the valve from seating; therefor you lose compression. You can sometimes get by with just carb cleaner straight into the cylinder head.. but most of the time you have to remove the cylinder head and hand lap the valves with valve grinding compound. The exhaust valve is most always the culprit.
Most pressure washers do not have an oil level safety switch but if there is one installed these buggers can and do cause havoc when the sensors are dirty (wash with gas then carb cleaner) or the oil is low.
The pump head has a plastic window on side of pump. Oil should fill to middle of that window. Pump should have 20 or 30 weight NON detergent oil. SAE20 SAE 30 I believe. Auto parts store will know which is NON detergent.
The engine oil is ordinary 10W30. We used to change oil after each painting season by tilting engine to the side. Do not turn engine on it's side or upside down or oil will run into carburetor.
I don't remember exactly how many quarts we put back. Maybe 2? Fill up reservoir until oil is about half-way up dip stick.
Excell pressure washers used a series of numbers such as yours. I believe that that number will be for pump or pressure washer as a whole unit. Check Excell web site for a match. If you are looking for the engine model number check the fan shroud or valve cover or tag on engine itself. Good luck
If the motor runs continuously, rather than pulsing on and off, then this points to a major leak rather than a simple seal failure. If there's any possibility that the machine has been subject to frost, then part of the high pressure system may be split. This is not as bad as it sounds, as even replacing the whole cylinder head and control head assembly is not unduly expensive.
Having said that, I have seen one machine recently with this problem where the only thing wrong with it was that a joint between the pump head and the high pressure hose connector had simply come apart (shouldn't be possible, but it had).
If you need more help, please post again with details of the model number.