03 7.3L Oil and Fuel consumption (excessive) - Ford Powerstroke Diesel Forum
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Old 01-10-2011, 08:31 AM
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03 7.3L Oil and Fuel consumption (excessive)

I have a 2003 7.3L with 37000 miles on the motor. It was put in the truck at a Ford dealer before I bought. Has warranty. On my last oil change i used a little over 3qt (5000 mi interval). Took to ford, they ran their tests and came up with nothing. Now they are running an oil consumption test. So far it has used 3qt with 2000 miles left on this interval. No black smoke unless I can it and then i only get a puff. When its warm or hot out i see a little haze sometimes. Motor seems to run perfect other than the fact that my oil is dissapearing.

I also started paying attention to fuel consumption after this latest test was started. I'm getting 8-9 mpg now. down from typical 12.5- 15mpg for what i do

any ideas??

Thanks
Matt
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Old 01-10-2011, 12:02 PM
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injector orings...

otherwise you have real big problems..
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Old 01-10-2011, 01:38 PM
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Quote:
Originally Posted by Dietoremain View Post
injector orings...

otherwise you have real big problems..
What kind of big problems??

Ford checked the oil again today. Another quart gone (in 500 miles). They say if it were injector o-rings i would have a check engine light. What are your thoughts?

Not 100% on the fuel mileage. Seems to be better on this tank of fuel
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Old 01-10-2011, 01:41 PM
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I dont think a cel would be on due to Orings on injectors. The turbo seals can also allow the motor to drink oil
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Old 01-10-2011, 01:57 PM
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Turbo has been checked by me and by ford. nothing unusual there
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Old 01-10-2011, 02:01 PM
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How can I test for bad o-rings??
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Old 01-10-2011, 02:15 PM
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take the injectors out and replace them. Make sure the glow plugs are in tight. I doubt it cause you would hear it(compression wise) but oil could get to the cylinder from the glow plug hole.
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Old 01-11-2011, 07:50 AM
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lol ford is the last people you should be listening to. injector orings causing a cel? ha.
if you havent changed your fuel filter recently pulled it and see if the bowl has oil in it and if the filter is dark like it shouldnt be. thats a sign
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Old 01-12-2011, 06:27 PM
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Quote:
Originally Posted by Dietoremain View Post
lol ford is the last people you should be listening to. injector orings causing a cel? ha.
if you havent changed your fuel filter recently pulled it and see if the bowl has oil in it and if the filter is dark like it shouldnt be. thats a sign
Thanks and I already know that. lol. There is one small issue with that, the motor is under warranty. I have to deal with Ford for now.

I'll check the fuel bowl int he morning. My uncle (an experienced diesel mechanic especially with international) thinks piston rings at this point.... i just dont want to get onto a situation where its "fine" now and causes damage down the road.
I appreciate the input from you guys. it pretty much reinforces my thoughts on the issue. I would like to hear from a tech as well
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