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post #1 of 11 (permalink) Old 05-04-2011, 07:40 PM Thread Starter
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Fuel leak?

Ok, i tried searching for a possible solution and came up with nothing.

The truck:
1997 f350 7.3 auto 4x4
251,xxx miles
Bone stock - as far as i can tell.

Heres the symptoms:

Oily leak (read: not engine oil, but an oily substance that i believe is fuel) on the passenger side of the motor. Its covered the passenger valve cover and the whole passenger side of the motor.

Truck runs fine, has oil pressure, doesn't run hot, and from what i can tell...no loss of power. Though, i've only had the truck for 2 weeks.

Also, i've only driven it about 50 to 60 miles and i've already burned half of the front tank which was filled up by the PO before I picked up the truck.

Sometimes it leaks alot, sometimes its only drips and its way to thin to be engine oil.

On a side note, i've only seen 14 psi peak boost. Don't know if this is related.


Any solutions?
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post #2 of 11 (permalink) Old 05-04-2011, 08:00 PM
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Re: Fuel leak?

The fuel bowl drain is on that side, or maybe the return line for the passenger head(black hose with AN fittings) I know others with high miles have had this issue. Is there a lot of fuel in the valley? Could be the banjo washers, blue fuel lines or the fuel bowl drain o-rings or the fuel bowl itself(they get corrosion holes eaten through the bottom if no one every drains the water seperater.
14psi sounds right on for a stock obs.
My recommendation is to degrease and pressure wash the #### out of it top and bottom then let it dry, start it and watch for the leaks original location. Too many possibles and I only named the common ones

'97 4x4 ECLB: SD IC, TW 4 pos, afe, 3-4" w/areoturbine, 4 gauge, DIY stage 1s, GTP38R, cust E-fuel, E-brake, stage3 CM meth, 439hp still trying for 600. cust stereo, highamp alt, cust paint
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'78 F-150 RCLB: 460 swap, 3" lift, 33's,Trussed 9" w/ chrome-moly shafts, cust stereo, locked front/rear. My first love! EFI & Turbo coming soon...
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post #3 of 11 (permalink) Old 05-04-2011, 08:02 PM Thread Starter
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Re: Fuel leak?

Thanks for the quick response. At least it gives me an idea of where to start looking.
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post #4 of 11 (permalink) Old 05-04-2011, 08:05 PM
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Re: Fuel leak?

I have heard of degreasing and rinsing, but I thought power washing was bad on these trucks? probably any truck for that matter.

Chris

Moore, Oklahoma



1996 Ford F350 4x4 Crew Cab PSD
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post #5 of 11 (permalink) Old 05-04-2011, 09:21 PM
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Re: Fuel leak?

Another place fir fuel to leak is out of the peep hole on the fuel pump. When the pump internals go bad it starts seeping out of there. But you would have less boost and not have fuel but in the valley.

-Jordan-
97 SCLB 7.3 Handshaker
Valair Clutch, only the best.
TS 6 Position Tyrant Tuning
S&B, MBRP, Isspro, Mag-Hytec, 1.00 A/R Exhaust housing, HPX
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post #6 of 11 (permalink) Old 05-05-2011, 04:47 AM
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Re: Fuel leak?

Quote:
Originally Posted by 7.3psd97444 View Post
Another place fir fuel to leak is out of the peep hole on the fuel pump. When the pump internals go bad it starts seeping out of there. But you would have less boost and not have fuel but in the valley.
Weep hole and yes there are lots of other places I just gave him the usual suspects

'97 4x4 ECLB: SD IC, TW 4 pos, afe, 3-4" w/areoturbine, 4 gauge, DIY stage 1s, GTP38R, cust E-fuel, E-brake, stage3 CM meth, 439hp still trying for 600. cust stereo, highamp alt, cust paint
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'78 F-150 RCLB: 460 swap, 3" lift, 33's,Trussed 9" w/ chrome-moly shafts, cust stereo, locked front/rear. My first love! EFI & Turbo coming soon...
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post #7 of 11 (permalink) Old 05-05-2011, 04:53 AM
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Re: Fuel leak?

Quote:
Originally Posted by zilla68 View Post
I have heard of degreasing and rinsing, but I thought power washing was bad on these trucks? probably any truck for that matter.
We pressure wash engines all the time, only problem I've ever had is on older gas engines with distributor style ignition systems, they can get moisture in the cap and cause them to not start or run rough but you can easily dry them out. As long as you concentrate your efforts on the dirty metal engine and frame stuff and do your best to avoid close up high pressure spray to rubber lines, vacuum lines, and connectors you should be fine. Never caused any damage to anything and I've washed probably 1000+ ranging from gas, diesel, LP even high-breeds, as old as 1929 and as new as 2011.

'97 4x4 ECLB: SD IC, TW 4 pos, afe, 3-4" w/areoturbine, 4 gauge, DIY stage 1s, GTP38R, cust E-fuel, E-brake, stage3 CM meth, 439hp still trying for 600. cust stereo, highamp alt, cust paint
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'78 F-150 RCLB: 460 swap, 3" lift, 33's,Trussed 9" w/ chrome-moly shafts, cust stereo, locked front/rear. My first love! EFI & Turbo coming soon...
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post #8 of 11 (permalink) Old 05-05-2011, 01:56 PM
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Re: Fuel leak?

Quote:
Originally Posted by TDeesTruck View Post
Weep hole and yes there are lots of other places I just gave him the usual suspects
Ya I know I was just saying that's how my fuel leak went about. Lol

-Jordan-
97 SCLB 7.3 Handshaker
Valair Clutch, only the best.
TS 6 Position Tyrant Tuning
S&B, MBRP, Isspro, Mag-Hytec, 1.00 A/R Exhaust housing, HPX
Full sound system: Kicker-Kenwood
BILLET BADGES
Dick Cepek DC-2's/Duratracs
On-Board Air
Few cosmetics
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post #9 of 11 (permalink) Old 05-05-2011, 02:47 PM
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Re: Fuel leak?

So many possibility's.... so little time

'97 4x4 ECLB: SD IC, TW 4 pos, afe, 3-4" w/areoturbine, 4 gauge, DIY stage 1s, GTP38R, cust E-fuel, E-brake, stage3 CM meth, 439hp still trying for 600. cust stereo, highamp alt, cust paint
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


'78 F-150 RCLB: 460 swap, 3" lift, 33's,Trussed 9" w/ chrome-moly shafts, cust stereo, locked front/rear. My first love! EFI & Turbo coming soon...
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post #10 of 11 (permalink) Old 05-05-2011, 03:27 PM
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Re: Fuel leak?

That's for sure.

PSD 2004, any new developments?

-Jordan-
97 SCLB 7.3 Handshaker
Valair Clutch, only the best.
TS 6 Position Tyrant Tuning
S&B, MBRP, Isspro, Mag-Hytec, 1.00 A/R Exhaust housing, HPX
Full sound system: Kicker-Kenwood
BILLET BADGES
Dick Cepek DC-2's/Duratracs
On-Board Air
Few cosmetics
PSA # 269
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