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Anonymous Poster
wcerhart@aol.com
Mar 6, 2009, 1:48 PM
Post #1 of 8
(2242 views)
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Gas in the oil,83 Mark 6
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I have a 83 lincoln make 6, have not ran it in a year or more, been in the graage so I could work on it, well today I check the oil, no real reason just checked it, well it was almost a inch over full, I got under it drain it, and all I can smell is gas, I did not fill it back up I came in to talk to you guys, can some one tell me what happen and can I fix it, it is a 83 mark with the 5.0 it has 123,000 on it, so can I save it or junke it, ?? Thanks so much.
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Loren Champlain Sr
Veteran
/ Moderator
Mar 6, 2009, 6:20 PM
Post #2 of 8
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Re: Gas in the oil,83 Mark 6
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It's a darned good thing you checked the oil, and noticed the fuel. Of course, as you well know, the first order is to get fresh oil and filter in it. You may want to pull the spark plugs and take a look, maybe even replace them.
Have you actually tried starting it, yet? If yes, the cylinders could be full of fuel, so we want to be very careful.
Probably should disable the coil so there is no chance of spark. With the plugs out, ignition disabled, you can crank the engine over a few times and observe the pressure coming out of the plug holes. If you see moisture, you are going to need to let this puppy air dry. Blowing compressed air into each cylinder will speed up the process. But, remember, that you've got raw fuel and fuel vapors that are FLAMMABLE. These engines were known for the fuel pressure regulators taking a dump and filling the system/crankcase with fuel.
I can't say enough how careful you must be in regards to a possible fire. If you don't feel comfortable doing this, swallow your pride and have an expert do it. I always have a fire extinguisher handy when dealing with these types of situations. Good luck.
Loren
SW Washington
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Anonymous Poster
wcerhart@aol.com
Mar 6, 2009, 7:38 PM
Post #3 of 8
(2236 views)
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Re: Gas in the oil,83 Mark 6
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Thank you SO MUCH for your reply, as I said the car has been down for a year or so sitting in the garage, so you think it was caused by the fuel pressure regulator ?? if I change that it should take care of the trouble ??, I can do the work I just did not know what caused it, I do not drive the car at this time I am re doing it, it is or was almost done, so new fuel pressure regulator, oil filter, and lots of air drying should do it?? Thanks so much Sir.
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Loren Champlain Sr
Veteran
/ Moderator
Mar 7, 2009, 5:57 PM
Post #4 of 8
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Re: Gas in the oil,83 Mark 6
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Oh, gosh...don't run out and start throwing parts at it. Gets expensive. Start with the oil and filter, and maybe new spark plugs. Then, we can go from there if there are any other problems. I'm sorry if I misled you. Regualtors are a common problem, but unknown at this point if that's the problem. Could be a faulty coolant temp sensor, leaky injector, ect., ect.....Let's start with the basics.
Loren
SW Washington
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Anonymous Poster
wcerhart@aol.com
Mar 8, 2009, 3:30 AM
Post #5 of 8
(2221 views)
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Re: Gas in the oil,83 Mark 6
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Hi Mr C, Thanks again, I will put a new filter and oil once I find how the gas is getting in, as for the plugs, I pulled a few and they are dry and clean, also are you saying a faulty coolant temp sensor can let gas into the oil ??, as I said I do not drive this car, I am restoreing it, it stays in my garage, Thanks again Sir.
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Loren Champlain Sr
Veteran
/ Moderator
Mar 8, 2009, 6:32 PM
Post #6 of 8
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Re: Gas in the oil,83 Mark 6
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The coolant temp. sensor tells the computer the temperature of the engine. The computer 'takes' that info and delivers fuel accordingly. If it is 30F outside, and since you don't have a choke, it delivers a lot of fuel. As the engine warms, the computer 'sees' that and starts backing off on the fuel supply. Now, if it is really 60F outside and the CTS is telling the computer it is 30F, it is going to cause an over fueling problem, as in flooding condition.
Of course, the warmer the engine is, the worse it would be if the computer was still thinking it was 30F. I must say, though, that this isn't a common failure on Fords, but worth a check. The CTS can be checked with an ohmmeter. I'm pretty sure the '83 is still EEC3, so live data isn't possible. If you want to check it, let us know, and we can give you a chart for the resistance values at differing temps.
Loren
SW Washington
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Anonymous Poster
wcerhart@aol.com
Mar 9, 2009, 4:01 AM
Post #7 of 8
(2210 views)
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Re: Gas in the oil,83 Mark 6
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Thank you Mr C, as for the CTS, the car would have to be running for that to cause a flooding ?? and I have not had it running for more then a min or two as I have it in a garage, so I really do not think it is that, I am going to pick up a fuel pressure regulator today, as after thinking about it more and more, I seem to recall there being times it took a some time to start as if it had to pump up the gas pressure, so could it be the fuel pressure regluator droped its fuel in to the oil?? Thank You Sir.
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Loren Champlain Sr
Veteran
/ Moderator
Mar 9, 2009, 4:11 PM
Post #8 of 8
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Re: Gas in the oil,83 Mark 6
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>> I seem to recall there being times it took a some time to start as if it had to pump up the gas pressure, so could it be the fuel pressure regluator droped its fuel in to the oil?? <<
Well, not exactly. Taking time to start would be an indication of low pressure. The regulator would come into effect after the engine has started. Before the engine starts, there is no vacuum to the regulator, so it will, by default, be full rich. Once the engine starts, vacuum is supplied to the regulator. When the regulator sees a drop in vacuum, it opens, allowing more fuel. However....if the pressure regulator's diaghragm is blown, it will allow fuel to leak by and cause a flooding condition that will eventually find it's way to the crankcase. At this point, it's no more than a guess. Pretty sure this is TBI? With the key on, do you see any dribble of fuel from the injectors? There shouldn't be any. Once you crank the engine, you should see a nice, fine, even, spray from both. I've had MAP sensors take a dump and cause a flooding condition, as well. You can spend a lot of money guessing. This is going to take some step by step diagnosing to find the true cause. If, in fact, there is a problem.
Besides a fuel pressure test, how about a vacuum reading at idle? That might throw us a clue, as well.
Loren
SW Washington
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