krispos42: primitive inquires about gasoline in oil

[franksolich]

http://www.democraticunderground.com/discuss/duboard.php?az=view_all&address=310x846

This is a new bonfire, and so far no primitives have noticed it yet.

I'll bet our guys over here know more about something like this than all the primitives put together.

krispos42  (1000+ posts)       Sun Mar-30-08 02:36 PM
Original message
 
Question about gasoline in your oil

It's a 2000 Dodge Neon with the 2.0L I-4 SOHC engine. Belongs to my ex. She says it's making a knocking noise, and her brother-in-law says he smells gasoline in the engine oil. But gas mileage seems to be unaffected.

I wonder if anybody has any experience with this problem. I am thinking it could be a worn-out piston ring, but I kind of doubt it as I used Syntec in it since we bought it new, and I believe it only has about 60,000 miles on it, probably less. But I don't see how else gasoline could get into the oil. Could the cylinder head be loose? Perhaps it needs to be tightened? Maybe a chipped valve? Is there some emissions part that could be causing this?

She's out-of-state now, planning to come back on Tuesday.

[Carl]

http://www.democraticunderground.com/discuss/duboard.php?az=view_all&address=310x846

This is a new bonfire, and so far no primitives have noticed it yet.

I'll bet our guys over here know more about something like this than all the primitives put together.

krispos42  (1000+ posts)       Sun Mar-30-08 02:36 PM
Original message
 
Question about gasoline in your oil

It's a 2000 Dodge Neon with the 2.0L I-4 SOHC engine. Belongs to my ex. She says it's making a knocking noise, and her brother-in-law says he smells gasoline in the engine oil. But gas mileage seems to be unaffected.

I wonder if anybody has any experience with this problem. I am thinking it could be a worn-out piston ring, but I kind of doubt it as I used Syntec in it since we bought it new, and I believe it only has about 60,000 miles on it, probably less. But I don't see how else gasoline could get into the oil. Could the cylinder head be loose? Perhaps it needs to be tightened? Maybe a chipped valve? Is there some emissions part that could be causing this?

She's out-of-state now, planning to come back on Tuesday.

The smell of gas in the oil and a knocking sound usually mean the engine is in need of a major overhaul,probably the crank will need to be turned.

It should not be run period unless they are accepting of the fact a replacement is in order and are not worried about being stranded should a main bearing spin or seize up the crank.

The reasons this has happened are hard to determine without full knowledge of the vehicles honest service history ( remember many engines with a rod through the side of the block are full of fresh oil  )

My guess is that the air filter hasn`t been looked at and has a hole sucked through it allowing dirty air into the cylinders which has worn the rings and cylinder walls allowing for gas to enter the crankcase and wash down the crank journals.

[Uhhuh35]

Hey DUmmie_Krispie42, Google and ye shall receive:

http://groups.google.com/group/rec.autos.makers.chrysler/browse_thread/thread/bc43f869fb6013f2/3bf3500c290d7120?hl=en&lnk=st&q=2000+Dodge+Neon+gas+in+oil#3bf3500c290d7120

I love this answer: "I don't think anything is happening here that you need to get excited over.
For all you know you were smelling your G/f's dog's fart that he let off
at the same time.  Let's back this snap panic diagnosis up with a little
more observation of some real measurable things before we get panicey, shall
we?
If your absolutely positive there's gas in the oil, then change the oil
and at 3000 miles have an oil analysis done".

This DUmmie_Krispie42 observation is priceless: "Could the cylinder head be loose? Perhaps it needs to be tightened? Maybe a chipped valve"?

If the cylinder head was loose it would really run like shit so that aint the problem. But he makes it sound like he could just take any old screwdriver and tighten it right up like a light switch cover!
Chipped valve? I've heard of bent valves and valves that broke off at the stem and went into the cylinder. But a chipped valve? Like a chipped tooth huh? Doubtful at best. 

[Carl]

Hey DUmmie_Krispie42, Google and ye shall receive:

http://groups.google.com/group/rec.autos.makers.chrysler/browse_thread/thread/bc43f869fb6013f2/3bf3500c290d7120?hl=en&lnk=st&q=2000+Dodge+Neon+gas+in+oil#3bf3500c290d7120

I love this answer: "I don't think anything is happening here that you need to get excited over.
For all you know you were smelling your G/f's dog's fart that he let off
at the same time.  Let's back this snap panic diagnosis up with a little
more observation of some real measurable things before we get panicey, shall
we?
If your absolutely positive there's gas in the oil, then change the oil
and at 3000 miles have an oil analysis done".

This DUmmie_Krispie42 observation is priceless: "Could the cylinder head be loose? Perhaps it needs to be tightened? Maybe a chipped valve"?

If the cylinder head was loose it would really run like shit so that aint the problem. But he makes it sound like he could just take any old screwdriver and tighten it right up like a light switch cover!
Chipped valve? I've heard of bent valves and valves that broke off at the stem and went into the cylinder. But a chipped valve? Like a chipped tooth huh? Doubtful at best. 

I have seen valves with a piece broken out of the face of them,it kills that cylinder for obvious reasons so there would be a pronounced skip.

[Randy]

I had a parts manager who had a few vintage Corvettes in his garage. One weekend he was working on one while his kids were playing in another. They were playing race, you know Vroom vroom. Turns out they were pushing the gas pedal too. He went out the next morning to come to work. Turned the key over and BOOM, off came the valve covers and oil pan. The gas had leaked down overnight past the rings and into the pan.

DUmmie may have a bad injector that's dumping to much gas into a cylinder and a little is getting forced into the pan...maybe, IF the whole truth is being told and if the BIL knows what he's talking about. It's amazing how many people don't know the smell of antifreeze from the smell of burning oil. They just smell something and assume the engine is "hot".

[CactusCarlos]

krispos42  (1000+ posts)       Sun Mar-30-08 02:36 PM
Original message
 
Question about gasoline in your oil

It's a 2000 Dodge Neon with the 2.0L I-4 SOHC engine. Belongs to my ex. She says it's making a knocking noise, and her brother-in-law says he smells gasoline in the engine oil. But gas mileage seems to be unaffected.

I wonder if anybody has any experience with this problem. I am thinking it could be a worn-out piston ring, but I kind of doubt it as I used Syntec in it since we bought it new, and I believe it only has about 60,000 miles on it, probably less. But I don't see how else gasoline could get into the oil. Could the cylinder head be loose? Perhaps it needs to be tightened? Maybe a chipped valve? Is there some emissions part that could be causing this?

She's out-of-state now, planning to come back on Tuesday.

Needs a 5lb bag of sugar in the tank.  That'll fix the knocking noise.