There are seals in the valve cover that over time can detereorate and cause oil to enter the spark plug tubes. This oil can then seep between the plug and the wire which can make a better path to ground then the spark plugs gap would and cause a misfire. answer The bottm oil ring on the piston could be broken and instead of that ring wiping the oil off the cylinder wall as it goes on the down stroke, the oil is still on the wall and then egst pushed to the top and included in the combustion chamber. The oil will foul the plug and yes it will set off a msifire. Get a compression check on all 4 cylinders and see what reading you have. All it is is a pressure test. There is a pressure gauge you can buy and screw it into the spark plug hole and get readings yourself if you so wish.
Engine cylinders # 1 and # 4 are misfiring
That would be an engine cylinder misfire , but either more than one or it can't determine which engine cylinder is misfiring
The number 5 engine cylinder is misfiring
The P0300 code indicates random engine misfiring. The P0303 and P0304 codes indicate the cylinder #s where excessive misfiring is occuring.
1: Replace the injector. 2: If still misfiring, replace the engine.
most likely misfiring cylinder(s) and/or worn engine mounts.
This means that your engine is misfiring on cylinder #3. It is either a bad sparkplug, wire or coil.
It could be (a) misfiring cylinder(s). Check the condition of your plugs and wires. Also, check if your engine mounts are not worn.
They had a 2.5L 4 cylinder engine and a 3.5L 6 cylinder engine available.
Number 2 cylinder is misfiring.
The 2006 Toyota Highlander has a V6 engine.
The Toyota Echo has an inline 4 cylinder engine. The number one cylinder on all inline 4 cylinder engines is the first piston at the front of the engine. The front of the engine is the end that is opposite the transmission.