Question about 2007 Mazda B3000

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My mazda b3000 crank case fills up with fluid its not water smells like gas a little transmission leaks fluid i want to know what could cause the crank case to fill up

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  • robert snyder Sep 08, 2009

    the motor still has power Ive changed the injectors and it does have a sprak knock a little white smoke at start up I apoligize I haven't drove it for a while for got that stuff

  • robert snyder Sep 08, 2009

    witch crank case gasket could be the one bad

  • robert snyder Sep 08, 2009

    Thanks for the advice thats the next step I was going to take. Your the second person so far that said ring, and the only one who told me how to check them corectly with out pulling the motor. I'll let you know how the test went when I'm done.

  • robert snyder Sep 09, 2009

    hey buddy i did a compression test #1 cyl 170lb, #2 cyl 165lb, #3 cyl 165lb, #4 cyl 155lb,

    #5 cyl 170lb, #6 cyl 165lb. Before I stoped driveing the truck after it warmed up it would start spark knocking when i tryed accel even after I upgraded to a higher octane. I think compression is good even knowing #4 cyl is low. I'm going to give it a tune up and see if that helps you think if the ignition timeing is off it might be over loading cyl with fuel. by the way before i stoped driveing i did change the injectors and that didnt fix it, any new idea please let me know my ears are open thanks.

  • robert snyder Sep 10, 2009

    changed them already still fills up, did comression test 170lb high cyl, 155lb low cyl. any other Idea I would love to hear.

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6 Answers

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The transmission is completely seal from the engine itself, just as the engine has the main crank seal keeping the oil from leaking into the tranny. gas can also leak into the crankcase but not transmission fluid. there is no way the transmission fluid can leak into your crankcase, its impossible. Sabb on another hand has incorporate transmission and oil pan in one unit. All Mazda transmission as its own unit from automatic to standard. the only thing is different with automatic tranny is the cooler which located in front with the radiator. Gas and water I can see in the crankcase/oilpan but not transmission fluid, unless someone use the wrong container thinking its oil instead of transmission fluid after all they both container looks lot alike. I would completely drain out all of the oil out of the engine and refill it with fresh oil again and recheck. On the gas side, the only way gas can get in the engine and into the crankcase is through the injectors, check and make sure your injectors are in working condition and not getting jam putting more fuel in the intake than it needs. I can see if you have a head gasket leaks as your crankcase mix with oil,gas and antifreeze/water it may give you a different distinguish looks and it may look and feel like tranny fluid. keep in mind, the new type of antifreeze is red color just as your transmission fluid color and others come in green. I cant picture or visualize tranny fluid leaking and going into your crankcase though the main crank seal unless your inner engine block is completely crack.

Posted on Sep 10, 2009

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Sounds like you have a fuel injector that is stuck open and flooding gas into the crankcase, run a fuel pressure leak test by hooking up a fuel pressure test guage to the test valve on the top of the engine, there is a valve there that looks like a tire valve, you will need to buy the test guage, if the system pressure drops rapidly after shut down of the engine then you have a leaking injector.

Posted on Sep 09, 2009

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If you have gas in the crankcase there are a couple of things that are happening. 1 you have a sticking injector(s) that causing the fuel to continue to flow into the cylinder(s) when that happens the fuel has nowhere to go but down hence the reason it ends up in the crankcase. the other reason is you have a valve not fully opening/closing causing the injectors to run rich or over fuel the motor. You may also have a dropped cylinder causing the overfueling (check compression of all cylinders). No matte which is the issue the fuel in your crankcase is killing your oil and will eventually do damage to your rods/bearings on the lower en and should not be driven until resolved to avoid more serious damage. If you must still drive it be sure to change the oil regurlarly

Posted on Sep 09, 2009

  • James Brooks
    James Brooks Sep 10, 2009

    I remember answering this question before, was that not sufficient enough? Those are your only 2 problems that can occur when you have gas in the crankcase

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Hi buddy it can either be water/coolant or it can be petrol/gas if its water/coolant its either a cracked cylinder/head or you have a gasket gone also if its petrol/gas it could either be piston rings are gone or the valve seals have gone leaking into oil you can check to see if its any off these things by getting a compression tester putting this in the spark plug hole and turning the engine over for 5 seconds then take the reading on each cylinder you will have to do this on all 4 this picture will show you what a compression tester is hope this helped buddymy mazda b3000 crank case fills up with fluid its - 7df7dbe.jpg

Posted on Sep 08, 2009

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Crankcase gasket seems to have gone.

Posted on Sep 08, 2009

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Worn piston rings allow the air/fuel mixture to seep past and into the crank case, time for an engine rebuild

Posted on Sep 07, 2009

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