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Old 01-08-2012, 09:54 AM
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Oil consumption

I have an 02 E350 with the 7.3 and 85000 miles. Recently is has started using a lot of oil, maybe 1 gallon in 300-400 miles. After much research in this forum most state that the injector o-rings have gone bad. I checked the fuel filter and it is normal in color, no oil contamination. There are no visible leaks anywhere and no smoke coming from the exhaust. I noticed recently with the oil filler cap off a lot of blowby is coming out where there was little to none before. Engine runs fine and fuel mileage is consistent. Any ideas?
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Old 01-08-2012, 08:06 PM
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How much blowby is there........will it blow the cap off it if you put it on the fill tube up-side down and let the truck idle?
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Old 01-10-2012, 05:03 AM
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The fill tube is at an angle so I can't put the cap on upside down. I did place my hand over it and didn't feel much if any pressure.
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Old 01-10-2012, 05:28 AM
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An angle? Mine's straight.
If you're getting a regular big puff of blowby, then you might have a cylinder that's going down.
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Old 01-10-2012, 09:29 AM
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May have to do a compression/leakdown test to figure out if there is a bad cylinder.......
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