Why is there gas in my oil tank in my 1994 Chevey Blazer s10?

Question

I have A 1994 Chevy Blazer S10.
I started to smell gas when I stopped at A light or when I would get home after driving it. My Dad drain & changed my oil and noticed that my oil tank was way to full. And he could Smell that there is gas in my oil. Does anyone own A chevy Blazer and had the same thing happen? Or does anyone no why this would happen? Or what part I would need to relpace?
Please help!
Thank You.

Answer 1

If you have the vortec engine it is probably a ruptured/leaking fuel pressure regulator or the fuel injector lines that run to the injector. I had a 93 s10 Blazer do the same thing. It was the fuel lines that go to the injector. It would dump a lot of gas inside the intake and after it got to a certain level the drain off holes let it drain down in to the engine and then into the oil pan. It was fixed by replacing the fuel lines (located under the intake pleneum) and changing the oil.


Here is a link to a website that explains it better and has links to all the parts you will need. Good Luck!

Answer 2

If the oil was milky in color it is actually coolant that has leaked into the oil. Blazers as well as Jimmys are known for blowing the intake manifold gaskets.

If this is the case, replace the intake manifold gaskets (take pictures as you go with a digital camera so that you know where everything goes back) drain the oil and remove the filter. Instead of oil, refill with 100% Slick 50 and put on a new filter. Drive normally for about 100 miles. Drain, replace filter and refill with 50% oil and 50% Slick 50 and run for the next 3000 miles.

If the internals haven't rusted up, you should be good to go, but there is a good chance the main bearings can go bad depending on how long this had been a problem.

Answer 3

every 3 months you replace your exhaust!??!?! Theres no way this could be a choice of yours, because thats insane. What you need to do, is flush your engine. What you do is drain the oil completely, then replace it with a kerosene (aka, engine cleaner). light oil mixture, then start your car breifly, then shut it off, drain the kerosene, fill again with a light oil, run it for a bit longer, then finally fill it with whatever weight of oil you use. This will clean the carbon deposits. Next, STOP USING CHEAP GAS. I cant even imagine a circumstance that a cat and muffler would need to be replaced every 3 months. How much oil does your blazer burn a month? Is it a quart a day... an hour? Thats insane, your muffler guy is screwing you big time. Take it somewhere else, and have them replace the cat with a straightpipe or high flow cat, that will solve the problem of it being clogged (if thats even possible after replacing it less then 3 months ago). So you replaced the plugs and wires, did you replace the ignitor as well? If you have new plugs and wires but a bad ignitor, you havent accomplished anything. While your at it, see if you have a fuel filter in place.I mean to clog a cat every 3 months, you must be burning garbage in your cylinders. And after that, see if you have an air filter on the car!

Answer 4

Not a safe condition, and your gas mileage suffers as well.
This can be caused by several things, but the most likely reason:
Gasoline is leaking from the fuel pump directly into the crankcase. There is a rubber diaphragm in the pump that can leak.
Replace the fuel pump and change the oil and oil filter again.
.
or
gasoline is leaking from underneath the carb into the crankcase ventilator passage and then into the crank case. This is not the most likely reason.
.
If the motor was running rough, a bad plug will allow raw gas to leak past the piston rings and into the crankcase. More often the raw gas goes out the exhaust and into the Catalytic converter, which can ruin the converter.
.
A hole in the piston is the worse possible cause, not only would your engine run bad, but lots of white smoke would pour out of the exhaust.
.
My bet is the fuel pump.

Answer 5

i expect you are refering to the oil pan not the oil tank as being too full.but the only way for fuel to get in the oil is around the cylinder rings.this means while the blazer is sitting like over night fuel is somehow flowing into the combustion chamber.since the engine isnt running it just sits there until it runs past the rings.if you had a carburated engine you would have a stuck float valve.with fuel injection im sorry i cant help you on that

Answer 6

I think you have two different problems.

1) Blown head gasket or intake gasket leaking coolant into the oil.

2) Fouled spark plug not igniting the fuel/air in one cylinder causing the smell of raw gas in the oil.

Answer 7

sounds like your engine is about time for a rebuild it needs new rings and seals and stuff like that i have a 1994 plymouth laser and had that problim so i pulled the engine and rebuilt it and the rings were junk and it let gas run down the cly. walls causing it to get in the oil. try putting the gas pettle to the floor and smell your exhaust it should be like a whitish blue color or pull the plugs and look at them they should be black

Answer 8

It sounds like a blown head gasket. that will give you a combustion smell in the oil, also your oil was probably high because there was coolant in it. there are testers to test for combustion gas in the radiator.

Answer 9

your intake gasket is bad