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Old 02-08-2007, 04:10 PM
New Port New Port is offline
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Unhappy Oil Leak

Hello Gentlemen,

I have a problem. It’s a 2002 F350 with a 7.3 with about 100,000 miles on it. I installed a new radiator yesterday and cleaned the motor with gunk. Life was good Today when I came out of work I find that oil is now leaking from between the motor and the trans (auto). I would say about 3 oz. of oil (not trans. Fluid) was under the truck... No other problems or symptoms other than a slight rough idle in the last few days. Could the high pressure oil pump be a possibility? If so how tough to change the O-rings? Do you know where I could get an exploded view or such?
Thanks for any help in advance. I do appreciate it.
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Old 02-08-2007, 04:12 PM
Jon
 
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The

valley has a drain hole in the back left corner. Oil from up top runs out that hole and down the trans. Lay up on top with a flash light and see if it is leaking from the hpop.
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Old 02-08-2007, 04:19 PM
bigcountrysg bigcountrysg is offline
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Sounds to me if the oil leak was near the trans, it is the end of the HPOP. On my 2002 7.3L I found my leak which was dripping in the same location as yours. Was coming from a brass colored plug on the passenger side valve cover. There is an o-ring that seals this plug when it is in the valve cover. A 5/8 box end wrench got the plug out and I replaced the o-ring with ones I got from the dealer. Bad News I had to buy all 6 O-rings for the Hpop which cost me only about 15 bucks. Good news it only took me about 5 minutes to swap out this o-ring. Bad news for me was it took me 6 months to find the oil leak. That was until I found this site.
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Old 02-08-2007, 04:40 PM
Jon
 
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Well,

it could be several things on top the motor, not just the hpop but thats the most common.
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Old 02-13-2007, 09:39 PM
turbocooker turbocooker is offline
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You guys think that sucks, I have a nasty oil leak from the hpop that I put off. I decided to investagate further when my milage started getting bad and found that my turbo had gone bad, the wheel was thrashed so I parked it where I stopped and yanked the turbo, 2hrs in the driveway, not bad for a first timer. Anyway how do I replace the oil seals. Parts should be here tommorow and I miss the truck bad. Thanks for the help
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Old 02-13-2007, 10:46 PM
straycat straycat is offline
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Location: Surrey B.C. Canada
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99-03 7.3 oil leak diagnosis

Check out this link. It may help you out.Thanks to Mark on this one

DFUSER.com - Performance Diesel Products and Parts

This link has the o-rings, thanks to Maintain for this.


http://www.dfuser.com/Install%20Guid...Oil%20Pump.pdf

And this one will help you through the install.

Hope that helps you out.

Gord.
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Old 02-14-2007, 04:04 AM
New Port New Port is offline
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WelI, I cleaned the motor well and checked closely for the leak. Of the two HPOP lines the one toward the rear was leaking. I made the tool needed out of an old 9/16 open ended wrench. I don’t think that oil pump ever did quit oozing oil where you are support to have clean dry threads for the Loc-tite. Since I had the oil lines off I checked the front HPOP line fitting. It was loose. I mean a ½ a turn loose. I tightened it and re-assembled.
The big leak is gone. I do still have a small leak somewhere. I will get one drop after the truck sits all night. I have not been able to pin point the seepage yet.
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Old 02-14-2007, 04:23 AM
SCUFFY828 SCUFFY828 is offline
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did you replace the o-ring on the back side of the hpop ,its an 18 mm ,it can leak also, but if its not leaking , they do take awhile to quit dripping if leak was bad enough takes some time for it all to run out of bell housing
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Old 02-14-2007, 09:41 AM
straycat straycat is offline
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Great, glad you got most of it delt with. good luck with the little one, but I agree with Scott. Probably just leftover running out.
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Old 10-27-2009, 08:37 AM
greene greene is offline
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f350 2001 real oil seal leak

I had my rear oil seal changed because of a leak, the new one leaked or 'blew out" again. it was the same signs of damage as was the previous seal. the oil leaks down from i corner on the oil pan behind the starter. after running for about 5 mins it starts leaking, after turning it off, it continues to leak, about 1- 1/2 cups of oil. This was the same problem as with the previous oil seal. After changing the oil seal the first time it ran for about 30-45 mins before it started leaking as before again. What to do next??? two mechanics, both quit the job, so now i needhelp.

Bahamas
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