Question about 2002 Honda Accord
My honda city typez 2002 model, the fourth spark plug doesnt work or it stall...the engine vibrate because of miss firing plug. i already replaced a new one but still doesnt work
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Posted on Jan 02, 2017
There's another set of seals below the rocker arm assembly that will leak into the spark plug holes. This is a fairly big job to fix, maybe best to keep draining the oil out periodically. Bearings are probably fine.
May need an idle valve, but they can clog with carbon- I'd take it off and check that first. Cleaning that out just may solve that.
Posted on Nov 07, 2008
The cylinder is not getting fuel, spark or compression. You have already checked for spark on that cable and it appears to be good. Pull the spark plug and see if it is damaged. You can also switch spark plug and cable to another cylinder and see if the miss travels with the plug and or cable. If so, you'll know its the spark plug/cable that is bad.
You can check for fuel by listening to the fuel injector to see if it clicks. Use an automotive stethoscope or a long screwdriver--put the metal end of the screwdriver on the injector and the other end against your ear and listen to the injector while the engine is cranking or running. You should hear it click for each time it pulses fuel.
If both fuel and spark are good, then you are probably missing compression in that cylinder. You (or a mechanic) will need to pull all the spark plugs and do a engine compression test with a compression test/gage set. Lots of things can lead to poor or zero compression including: broken piston rings, burned/stuck/broken valves, cracked cylinder head or engine block, cracked pistons,etc.
Because one cylinder is "dead", the engine has to work extra hard to start and run against a cylinder that is dragging it down. If you find low/no compression in that cylinder, you will probably have to remove the cylinder head to correct it. A big expensive job. It may be cost effective to replace the whole engine with a rebuilt one.
Posted on Apr 05, 2009
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