oil leak - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 4 (permalink) Old 03-04-2011, 01:59 AM Thread Starter
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oil leak

i have a 94 7.3 turbo that has a bad oil leak when u have a load on it but just riding around no leak its coming from back of motor but dont see any thing wet any clues thanks
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post #2 of 4 (permalink) Old 03-04-2011, 04:39 AM
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It could be a couple things, the rear main seal, the turbo oil supply line could be leaking, or the drain tube/pedestal could be leaking where it drains into the valley. The oil line on mine was leaking for a long time I thought it was the rear main seal. When I rebuilt my turbo I was told to take a punch and poke a hole on the inside of the baffle in the valley because it won't always drain fast enough for the oil draining from the turbo, causing the an oil overflow into the valley and down the back of the engine. IDK if poking a hole was the right thing to do but it seemed logical to me.

99 f-350 cc duallie 7.3l powerstroke 6sp 4x4
Finally on the road but needing lots of little problems fixed, injectors are in the works once the economy gets better


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mods :k&n filter, hypermax 3.5" exhaust, injectors, pyro & boost gauges, a zf5 swap , IP , rebuilt turbo

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post #3 of 4 (permalink) Old 03-04-2011, 02:27 PM
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Time To get dirty and lacate where you see the leak, really no other way around but to hunt for the leak.

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post #4 of 4 (permalink) Old 03-12-2011, 07:38 PM
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No leak riding around and a leak under load...

Sounds like a worn out CDR valve.

'93 F-250 HD, 7.3L IDI, 5spd - FARM TRUCK
I Support: Trailer brakes an every axle over the towing vehicle's GVW; CDLs for RVers; Safety inspections for ALL vehicles and 6 axle trucks (97K GVW proposal).

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