I have tried wire brush on a drill press -high speed. This will remove crud. Make sure not to hit stem that enters valve guide.
BUT I would only recommend: Take them to a rebuilding shop for sandblasting. Any decent shop will throw in quick valve inspection and free advice.
Be sure to tag each valve with colored twist ties, tags, etc. Ink might be removed. The shop will have its own I.D. method.
An 11 oz can of BG 44K added to a full tank of fuel is a very effective way of removing carbon deposits on inlet valves and combustion chamber deposits. It carries a heavy dose of polyetheramine which is the most effective substance for removing such deposits; good motor fuels use it as an additive in small doses.
Engine cylinder head valves admit the air/fuel mixture and release the burnt gases.
No 4 cylinder car has 24 valves. Only 16. A V6 has 24 valves -reply- no your wrong.. the 2010 Mazda 3 is a 4 cylinder inline engine with 24 valves
The cam is in the engine and it is what opens and closes the intake and exaust valves
it could be your valves or your engine
Incomplete combustion in an engine indicates that all of the fuel has not been burnt. Incomplete combustion can cause clogging and damage to the valves in the engine of a car.
The valves in a car engine are opened and closed by a cam shaft driven by the engine crankshaft. they allow the flow of gases and fuel into the engine and the burnt gases out of the engine into the exhaust system.
It depends if the engine is an interference engine. On an interference engine the positions will hit the valves and severe internal engine damage results.
no an 1600 cc engine is good for a medium hatch like Toyota corolla and 8 valves suck that means there are only two valves in every cylinder most cars have 16/24 or 48 valves
Beware! Cleaning a car's engine might be illegal in your state as per EPA directive, please check your local state laws before trying to clean an engine as the waste from an engine clean can be toxic and needs to be properly disposed off, there are a handful of EPA approved car wash businesses around that you can take your car to for a clean. If it is allowed in your state then warm up your cars engine shut it off cover the car's ECU, spark plugs and wires with plastic and then either use a steam cleaner or waster in a bucket (with car de-greaser and then car wash shampoo) and clean away be sure you leave the hood open so the engine air dryes.
Noninterference
if you are talking about v-tech, it's a symbol of the way the valves in the engine are faced.
because one of the valves arnt closing or opening properly