Question about 1985 kawasaki ZL 900 A1 Eliminator

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Fuel going into crankcase when trying to start

Fuel going into and filling crankcase when trying to start

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Check for carby piston stuck open or stuck needle & seat! & float level

Posted on Jul 26, 2009

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6ya6ya
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Posted on Jan 02, 2017

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Crank case is filling up with fuel engine wont start


On pre-electric fuel pumps .. ie. mechanical fuel pumps that were cam-driven, fuel could find its way through a faulty pump/failing gasket into the engine block and oilways ... and end up in the crankcase.

You seem to have the same problem.
You don't say what sort of vehicle you have, however, with carbs that develop a fault, fuel can find its way down past the piston rings and into the crankcase.

Whether your car has a mechanical fuel pump and carburettors, or an electric pump/injection, the fuel finding its way into the crankcase is the problem.

Sort that fuel problem out and your vehicle will start.

Dec 22, 2015 | Cars & Trucks

1 Answer

CARBURETOR LEAKING OIL AND SMOKING


IT is likely that the carb is leaking fuel and filling the crankcase with fuel. Causing excessive crankcase pressure forcing oil into airbox through the crankcase vent. Check your crankcase for fuel and/ or being overfilled. If fuel is present fix the carb first, then drain and refill crankcase. After all is fixed run the unit outside for a few minutes and let it burn off excess smoke.

Sep 02, 2014 | Cub Cadet 46" Lawnmower Deck Drive Belt...

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Gas in crankcase


Fuel from the fuel tank flows to the carburetor and then on into the engine cylinders. From there it seeps into the crank case.
It's a matter of gravity. The gas will seep until it reaches the lowest point in the engine.
There are two methods of correcting this dangerous problem.
1) When you are done using the engine you can turn it upside down, over a large container that is of sufficient size to contain all the gas and oil that will run out of the engine.
or
2) Turn the fuel valve to it's OFF position when you are done running the engine. This stops the fuel from seeping into the crank case from the carburetor.
(And a heads up from one who has personal, first hand experience. Be sure to OPEN the fuel shut off valve when you think you would like to start the engine.)
If you should have this happen again DO NOT try to start the engine!
(That's one of the reasons The Da always said, "Did you check the oil before you started that engine?")
Dump out all of the oil that has been contaminated with fuel and replace it with fresh oil.

Dec 24, 2013 | Briggs & Stratton Power Products 5,550...

1 Answer

I have CraftsmanLT1000 lawn tractor, Smokes heavily.


Many times a dirty air filter will cause this on this style of engine. When the filter is plugged, it creates a 'rich' fuel condition, and the engine smokes heavily, the excess carbon is drawn into the air filter, and plugs it even more.

check spark plugs, air filter, fuel filter, choke linkages (for full choke/no choke operation) and crankcase oil.

Crankcase oil can become fuel contaminated, thus overfilling the crankcase and filling the crankcase breather with raw oil/fuel, and this is drawn into the air filter, plugging it, and starting this senerio.

If there is fuel in the crankcase oil, drain completely, and refill with fresh oil. Then you need to look towards the carb for an inlet needle sticking, broken, worn.

Nov 15, 2009 | Craftsman Garden

2 Answers

Air box and crank case fuel flooding problem happened before, thinking it was stuck or worn float needles; I installed 2 Carb float needles left side facing rear of carbs , all larger main jets, all...


Well there only one way the fuel can get into the crankcase and that's from the fuel tank. The petcock must be draining and the float needles are not stopping the fuel flow. Do you have a prime position on the petcock? If so do not run the bike in the position. Try topping the tank off with gas and letting it sit for a while and see is the gas has gone down and then check the crankcase and see if there's fuel in it again. i still say its got to be your petcock.

Sep 29, 2009 | 2005 kawasaki ZRX 1200 R

1 Answer

2010 DIESEL, DIESEL FUEL GOES INTO CRANKCASE, A LOT! TRACTOR CAN NOT BE USED, CRANKCASE FILLS WITH FUEL AND SPRAY FROM CRANKCASE BREATHER SYSTEM. 1963, ITHINK.


do you have an injector pump mounted to the engine block? on some the seals on the pump leak letting the fuel go into the engine. only other thing would be the standpipe maybe cracked or broken. it is probally the pump though.not seeing how it's mounted i cant help much more than this.

Jul 16, 2009 | John Deere 420,1020,2010,2020,2510,2520...

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Drove bike to gym. Tried starting it 2 hours later. NO GO.


sounds like you may have more than one problem. as far as the fuel......the prime position allows gas to flow continuous without the need of the fuel pump. as far as the 11 volts is that with the key on or off? what are the volts at the battery terminal?

Jun 25, 2009 | 2000 kawasaki ZRX 1100

3 Answers

Engine filling up with gas


there is no way for fuel to get passed the rings right? So if you filled the head with fuel, it would just work its way down the exhaust pipe and out the back, just like its doing. The only way of getting fuel into the sump is; if you have seriously bad rings (it would be burning oil) OR if its getting through the breather system. I don't even think if the injectors were on full-time, it still wouldn't get into the sump... very strange. Are you sure its not coolant? A serious coolant leak can be completely unnoticeable from the outside, but catastrophic to the inside. __________________

Nov 10, 2008 | 1997 Suzuki RF 600 R

3 Answers

Engine filling up with gas


there is no way for fuel to get passed the rings right? So if you filled the head with fuel, it would just work its way down the exhaust pipe and out the back, just like its doing. The only way of getting fuel into the sump is; if you have seriously bad rings (it would be burning oil) OR if its getting through the breather system. I don't even think if the injectors were on full-time, it still wouldn't get into the sump... very strange. Are you sure its not coolant? A serious coolant leak can be completely unnoticeable from the outside, but catastrophic to the inside. __________________

Nov 10, 2008 | 1999 Yamaha XV 535 Virago DX

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