1993 ford explorer has fuel in oil

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Old 05-29-06, 09:36 AM
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1993 ford explorer has fuel in oil

hey ya'll i have a 1993 ford explorer that has fuel in my oil. the motor is a 4.0 liter v-6. i have replaced my fuel pressure regulator after discovering fuel in my vacum line. any ideas? i have just taken my plentium off so i could look real good at my injectors for leaks but so far no luck. any info would greatly be appreciated.n thanks for takin the time to read my thread.
 
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Old 05-29-06, 09:37 AM
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Originally Posted by coondog36313
hey ya'll i have a 1993 ford explorer that has fuel in my oil. the motor is a 4.0 liter v-6. i have replaced my fuel pressure regulator after discovering fuel in my vacum line. any ideas? i have just taken my plentium off so i could look real good at my injectors for leaks but so far no luck. any info would greatly be appreciated.n thanks for takin the time to read my thread.

First thing off my mind would be intake manifold gasket
 
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Old 05-29-06, 09:44 AM
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Originally Posted by LouBazooka
First thing off my mind would be intake manifold gasket
ty lou i will put a new one on . but will this also cause the vehicle to smoke when you first crank it too? or would this be a whole new problem?
 
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Old 05-29-06, 09:58 AM
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Originally Posted by coondog36313
ty lou i will put a new one on . but will this also cause the vehicle to smoke when you first crank it too? or would this be a whole new problem?
from the best i can tell after draining the oil is that i am getting about three qurts of fuel in my oil. last weekend i changed the fuel pressure regulator and i had the same amount of fuel in my oil. if this helps anyone at all to solve the problem.
 
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Old 05-29-06, 10:18 AM
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If the injector(s) are bad or have something blocking them open, they can spray continouosly rather than the pulsed spray intended. A cylinder or more that is not firing will allow some of that unburned fuel to run into the crankcase as well.

I would consider the injectors to be more probable with the amount of fuel you speak of.
 
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Old 05-29-06, 10:56 AM
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if you pull the plugs and look at them you can probably tell which cylinder(s) are being drowned in fuel

Good luck
 
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Old 05-29-06, 11:34 AM
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Originally Posted by coondog36313
from the best i can tell after draining the oil is that i am getting about three qurts of fuel in my oil. last weekend i changed the fuel pressure regulator and i had the same amount of fuel in my oil. if this helps anyone at all to solve the problem.

Blue smoke is from oil burning Black smoke from unburned gas , smoke could be related or not, fix fuel in oil problem and go from there, changing an intake manifold gasket is not an easy job, too many parts to take out including distributor if it has one, make sure you're qualified and also discard other causes first,
I don't think is a bad injector ( stuck open like somebody mentioned here , which by the way I've never heard of )since you didn't mention engine misfiring or fuel on your exhaust system...double check fuel lines near engine on top of EFI for leaks, same with your emissions control lines.
 
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Old 05-29-06, 12:07 PM
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I don't think is a bad injector ( stuck open like somebody mentioned here , which by the way I've never heard of )since you didn't mention engine misfiring or fuel on your exhaust system...
happens all the time. Did you ever se those big rig diesels running down the road dumping copiuos amounts of black smoke,,,, guess what that often is.

even if he did not mention it, it may be running poorly.

double check fuel lines near engine on top of EFI for leaks, same with your emissions control lines
The fuel is ending up in the crankcase. There are actuall very few ways for fuel to enter the crankcase and you could poor fuel on the engine and still not end up with any in the crankcase. It is a sealed area. Additionally, if the injectors are stuck open, how would that cause the fuel to end up ON the exhaust. At worst, and if the catalytic convertor is not operating at all, it would end up IN the exhaust pipe and subsequently out the back end. Actually if the cat conv is working, it will cause it to be overburdened and damage it. A meltdown if you will.

Now if you want to put down others advice without the knowledge to do so, do not advise folks of things that will not cause a problem such as the intake man gasket. If the gasket is leaking, it will leak one of three things; coolant, exhaust, or air.

If coolant is leaked in the engine, it would obviously not cause the fuel situation the OP has. Coolant will end up somewhere it isn;t supposed to be, all other symptoms than the OP's.

Exhaust leakage. (if there is an exhaust crossover incorporated into the intake manifold. Not all engines have this. This also would be very different than the symptoms of the OP.

Last, air leagage. If there is air leakage, it will cause the engine to run with a fast idle (at minimum) and may cause the engine to actually race nearly uncontrollably. It will not cause a fuel leakage into the crankcase. It will simulate an open throttle in most cases and since the advent of engine control systems, the ecm will enrich the fuel and make the engine run fast.

What the OP is experiencing is fuel running into the crankcase. The intake isn't going to be the cause.
 
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Old 05-29-06, 12:19 PM
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Originally Posted by nap
happens all the time. Did you ever se those big rig diesels running down the road dumping copiuos amounts of black smoke,,,, guess what that often is.

even if he did not mention it, it may be running poorly.

The fuel is ending up in the crankcase. There are actuall very few ways for fuel to enter the crankcase and you could poor fuel on the engine and still not end up with any in the crankcase. It is a sealed area. Additionally, if the injectors are stuck open, how would that cause the fuel to end up ON the exhaust. At worst, and if the catalytic convertor is not operating at all, it would end up IN the exhaust pipe and subsequently out the back end. Actually if the cat conv is working, it will cause it to be overburdened and damage it. A meltdown if you will.

Now if you want to put down others advice without the knowledge to do so, do not advise folks of things that will not cause a problem such as the intake man gasket. If the gasket is leaking, it will leak one of three things; coolant, exhaust, or air.

If coolant is leaked in the engine, it would obviously not cause the fuel situation the OP has. Coolant will end up somewhere it isn;t supposed to be, all other symptoms than the OP's.

Exhaust leakage. (if there is an exhaust crossover incorporated into the intake manifold. Not all engines have this. This also would be very different than the symptoms of the OP.

Last, air leagage. If there is air leakage, it will cause the engine to run with a fast idle (at minimum) and may cause the engine to actually race nearly uncontrollably. It will not cause a fuel leakage into the crankcase. It will simulate an open throttle in most cases and since the advent of engine control systems, the ecm will enrich the fuel and make the engine run fast.

What the OP is experiencing is fuel running into the crankcase. The intake isn't going to be the cause.
thanks guys i am in the process of checking each spark plug right now. the right side of the motor had a lil carbon build up on the spark plugs. i leaned them and am takin a break from this alabama heat wave we have going on down here. there was no fuel on the plugs on the right side so i am checking the left side now.thank you all for the great advice as i contiue my process of elimanation with this problem. the vehicle runs great i just can't figure out where the fuel is coming from.
 
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Old 05-29-06, 12:19 PM
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I stick to my story I've never seen a case of an injector stuck open flooding cylinder chamber, Diesel engines work different than gas, no spark plugs, etc, anyways that was just my personal opinion and by saying "on" I obviously meant " In" It doesn't take much to figure that out.
 
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Old 05-29-06, 12:37 PM
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Originally Posted by LouBazooka
I stick to my story I've never seen a case of an injector stuck open flooding cylinder chamber, Diesel engines work different than gas, no spark plugs, etc, anyways that was just my personal opinion and by saying "on" I obviously meant " In" It doesn't take much to figure that out.
I apologize for being nasty. We all have something to add to a forum like this.

I have seen the injector scenario, you probably have as well.. think about those Shell gas commercials when they showed a dirty AND leaking injector.
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Black powdery carbon is a sign of excess fuel. With as much fuel as you have in your crankcase though, I would look for wet plugs.
 
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