Question about 1994 Nissan Pathfinder

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Oil smoke is coming off the top of the motor

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You have an oil leak somewhere. If the engine is dirty, one morning, drive to the nearest carwash, turn off motor, and use the pressure washer on the engine compartment. If it is really nasty, buy a cheap can of oven cleaner, (ammonia) and spray it on the engine before using the pressure washer on it. (DONT spray the coil packs, or spark plugs if possible) Then take it for a drive, and look for where the oil is coming out. Probobally an intake gasket. ALWAYS keep your engine compartment spotless! It makes it easy to repair, and troubleshoot. I am up to three people here locally who thought I was full of it, let their engine get nasty, and their cars burned to the ground. Also, when I worked as a service tech, I charged extra, (a LOT extra) if I had to get dirty while fixing a car. I also charged $20 for every time someone called to check on their car prematurely.

Posted on Jul 01, 2008


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My 1996 Dodge avenger's exhaust is smoking. Checked the motor oil. was low, topped up. Car still blows out a rapid amount of smoke. Any ideas why or things I could check?

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There isn't really anything you can do to check what is the root of your cause with out disassembly of the motor. There is a tall tale sign of a bad head gasket or cracked head and that is your oil will have a milky color and texture to it or your coolant will have an oil slick on the top when you take off the radiator cap. This doesn't always happen with a bad head gasket or cracked head but it is one way to generally tell.

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The inexpensive fix is to start using high mileage oil with seal conditioner.

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The correct fix is to wait until it's time for a head gasket replacement and let the professional to service the head.

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I will monitor the oil and coolant level.
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