174/173's, 38r, 28psi????? - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 13 (permalink) Old 01-23-2009, 01:47 AM Thread Starter
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174/173's, 38r, 28psi?????

I think I have a boost leak. I've never been able to get over 30 psi. How do I go about checking for leaks etc?

99 F250 4x4 SC SB Eats 6.0's


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Originally Posted by !!!PainTrain!!! View Post
I'm not saying the 7.3 is god's gift to diesel either. But atleast when a CPS goes out you can change it on the side of the road. I don't know about you but I'm running out of places in my glove box to store injectors, head studs, new heads, up pipes, fuel pumps, ficms, and a lift to remove the cab.
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post #2 of 13 (permalink) Old 01-23-2009, 02:14 AM
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Re: 174/173's, 38r, 28psi?????

Make a tool like I did and fill the system to 15PSI. Get a spray bottle with soapy water and spray every boot, line, and tube in the intake system. Look for bubbles. This installs on the intake tube in place of your air filter.


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1996 PSD F-350 crew cab 4x4, 5 speed,AB CODE CALI TRUCK- Tuned by DI

2013 F250 4x4 CCLB Platinum Edition
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post #3 of 13 (permalink) Old 01-23-2009, 02:16 AM
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Re: 174/173's, 38r, 28psi?????

yep.

08 F-250 CCSB king ranch erics tunes livewire
1985 Peterbilt 359 Big cam III Tuned up a little
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I change my HPOP oil, the oil does circulate with the regular oil, it doesn't cycle as often and does get dirty sooner.
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post #4 of 13 (permalink) Old 01-23-2009, 02:18 AM
<----Colin Banks
 
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Re: 174/173's, 38r, 28psi?????

Oh and by the way. Dont seal this tool with silicone. I did the first time I built it and it blew up. JB Weld fixed that. And also dont fill the system over 15PSI. It can pop off and do some damage.

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1996 PSD F-350 crew cab 4x4, 5 speed,AB CODE CALI TRUCK- Tuned by DI

2013 F250 4x4 CCLB Platinum Edition
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post #5 of 13 (permalink) Old 01-23-2009, 02:34 AM
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Re: 174/173's, 38r, 28psi?????

How fast should it leak off?

Early 99 Ford F-350 4X4, Extended Cab, Dually, 4 in lift, 6spd, Guages, Dual 5 in stacks, Gutted ebv, Ts chip, Zoodad, Ccv, Tymar, Stealth Duals, Modded IDM, South Bend Clutch, 262,000 miles
2001 Ford Excursion 4X4, Auto, Guages, dual 4 in Exhaust, zoodad, 2.5 in lift, 102,000 miles Everything else stock

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post #6 of 13 (permalink) Old 01-23-2009, 02:44 AM
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Re: 174/173's, 38r, 28psi?????

I have a leak detector if you want to borrow it.

Curtis
2002 F-250 PSD
Gambling with 250/200's on PMR's.
478hp/851tq on Haller's dyno - 7/28/12
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post #7 of 13 (permalink) Old 01-23-2009, 03:02 AM
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Re: 174/173's, 38r, 28psi?????

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Originally Posted by mflores View Post
How fast should it leak off?

The best I have got is about 15PSI in about 30 seconds or so.

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post #8 of 13 (permalink) Old 01-23-2009, 11:55 AM Thread Starter
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Re: 174/173's, 38r, 28psi?????

Quote:
Originally Posted by Pocket View Post
I have a leak detector if you want to borrow it.
Hey man, absolutely, I would love to. I'll call you next week. Otherwise I think I probably need to make one like Matty said.

99 F250 4x4 SC SB Eats 6.0's


Quote:
Originally Posted by !!!PainTrain!!! View Post
I'm not saying the 7.3 is god's gift to diesel either. But atleast when a CPS goes out you can change it on the side of the road. I don't know about you but I'm running out of places in my glove box to store injectors, head studs, new heads, up pipes, fuel pumps, ficms, and a lift to remove the cab.
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post #9 of 13 (permalink) Old 01-23-2009, 02:54 PM
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Re: 174/173's, 38r, 28psi?????

I also have one Frank.
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post #10 of 13 (permalink) Old 01-24-2009, 03:52 PM
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Re: 174/173's, 38r, 28psi?????

Frank, 28-30 PSI is where the wastegate typically blows open due to the exhaust pressure overcoming the diaphram spring and forcing the valve open. (Even if you have disconnected the pressure lines to the valve)

Jonathan
Early 99 7.3, Gen3 HPOP, 175/146 Inj's, PI converter

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