Question about 2001 Mitsubishi Montero
Does the #1 cylinder (spark plug wire) connect to the #1 coil port? & same for the rest cylinders and coil ports
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Posted on Jan 02, 2017
burned valve is likely the culprit.... or bad rings.... hook air up to that cyclinder one at a time.... and listen where the air is escaping... be aware that the motor will rotate till the piston is at the bottom of it's rotation. if it's a burned valve you will have to remove the head and replace it but somewhat easier job then replacing the rings. darn almost forgot.... it can also be a blown head gasket.... same procedure but you might need a brush and some soap water to test for an air leak at the side of the head. when you are done spray some wd 40 on it to get the water off so the spark plugs do not arc.
Posted on Sep 26, 2008
check fuel injectors, fuel pressure regulator, air filter. cat converter, O2 sensor. failure of any of these wastes fuel. air/fuel ratio should be normal.
Posted on Oct 04, 2009
Did you solve this problem? I am having a rough time figuring this one out on my 99 Montero! Maybe the ignition control module (power unit) or an ECU problem? Please let us know if you have solved it! Thanks
Posted on Jan 19, 2010
That sounds like a valve problem. If the valve guide drops it will allow oil down onto the valve and it will keep the valve from seating right in the closed position. That is most likely the problem. A head gasket will not usually cause a compression problem. It could also possibly be a piston ring blown but unlikely. Either way the head is going to have to come off and from there the problem will be easy to diagnose.
Posted on Oct 24, 2010
YEP BAD COIL CLOGGED FUEL INJECTOR AND INTAKE LEAK TO CYLINDER 1.TRY CLEANING FUEL INJECTORS.IF STILL MISFIRE DO A COMPRESSION TEST TO THAT CYLINDER YOU COULD HAVE A MECHANICAL ISSUE.
Posted on Dec 16, 2010
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