7.3L Power Stroke Engine and DrivetrainDiscussion of the 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.
My back cylinders on both sides are leaking, theres a good amount of soot around the back port. I have a loud exhaust noise under load and in the morning while driving unloaded but goes away once warmed up. I crawled under and noticed the rear exhaust bolts were not tight. So I tightend them down and still leak. I have read alot of posts and in the air as what to do. Either install gaskets, new manifolds, resurface existing or ceramic coated manifolds. Any suggestions?
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2001 F-250 4X4 LARIAT Crew Cab,7.3, FORGED RODS, 4" SS DP to 5" SS exhaust with Aero 5050, X-Code springs, Mini Spring Pack, Adj. Track Bar, AFE Stage II, Air Dog, Turbo Mater Wastegate, ATS Housing, CCV Mod, IC foil Delete, DP tunes (No Start, Stock, 1500 High Idle, 40 Tow, 60 Tow, 80 Eco, 120 Race, 140), JW valve body, 6.0 Intercooler, In-Tank mod., Harpooned Tank, Zoo-dad Mod., Autometer Cobalt series: Pyro, Trans, Boost, AR Atlas 16x8 with ProComp MT 285/75/R16D, 05 headlights, In dash DVD Player
Last edited by Gustad2005 : 11-05-2009 at 12:22 PM.
2001 F-250 4X4 LARIAT Crew Cab,7.3, FORGED RODS, 4" SS DP to 5" SS exhaust with Aero 5050, X-Code springs, Mini Spring Pack, Adj. Track Bar, AFE Stage II, Air Dog, Turbo Mater Wastegate, ATS Housing, CCV Mod, IC foil Delete, DP tunes (No Start, Stock, 1500 High Idle, 40 Tow, 60 Tow, 80 Eco, 120 Race, 140), JW valve body, 6.0 Intercooler, In-Tank mod., Harpooned Tank, Zoo-dad Mod., Autometer Cobalt series: Pyro, Trans, Boost, AR Atlas 16x8 with ProComp MT 285/75/R16D, 05 headlights, In dash DVD Player
Some leakage is typical but a leak is a leak. Usually installing the gaskets is the simplest and least expensive option. I say "usually" because you never know when you will encounter a seized bolt that breaks or a manifold that is unknowingly rotted away. Consider new bolts with the gaskets on this project.
__________________ Ford Master Diesel Technician Diesel Technician Society
Last edited by ford_doctor : 11-05-2009 at 12:47 PM.
Some leakage is typical but a leak is a leak. Usually installing the gaskets is the simplest and least expensive option. I say "usually" because you never know when you will encounter a seized bolt that breaks or a manifold that is unknowingly rotted away. Consider new bolts with the gaskets on this project.
A exhaust manifold gasket on a 7.3 ??
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2001 F-350 Lariat 4x4 Crew *4" BDS suspension lift w/315-75's * Ford AIS * MKO 5" exhaust * All 4 corners cleared * Front Reese Receiver * Front Bull Bar w/ K.C. Daylighters * Draw Tite Fold Over Gooseneck * Gauges whited out * IC Foil Delete * Dieselsite Coolant Filter kit * DiPricol Optix White Faced Turbo,Pyro,Trans Gauges w/Dash Mount Pod * DP Tuner F5 60T 80E 120R 140X * John Wood Valve Body * ITP SS X-Over Line * ITP Boost Annihilator * 6.0 Trans Cooler * TCI Truck Master Triple Disc Billet Converter (-200 RPM) * Reviva Transmission * ESOF Converted to Manual Warn Hubs * 203' Thermostat * Turbomaster Wastegate Actuator * Gutted EBPV * Centramatics * Walbro GLS392 * Ford AICM *
2001 F-250 4X4 LARIAT Crew Cab,7.3, FORGED RODS, 4" SS DP to 5" SS exhaust with Aero 5050, X-Code springs, Mini Spring Pack, Adj. Track Bar, AFE Stage II, Air Dog, Turbo Mater Wastegate, ATS Housing, CCV Mod, IC foil Delete, DP tunes (No Start, Stock, 1500 High Idle, 40 Tow, 60 Tow, 80 Eco, 120 Race, 140), JW valve body, 6.0 Intercooler, In-Tank mod., Harpooned Tank, Zoo-dad Mod., Autometer Cobalt series: Pyro, Trans, Boost, AR Atlas 16x8 with ProComp MT 285/75/R16D, 05 headlights, In dash DVD Player
Anyone have the torque specs and sequence of the manifold bolts on the 7.3? I have the service manual on DVD, but can't seem find either.
__________________ NEW TRUCK: 2002 F350 CC,Short Bed, Dually w/ 7.3L, Air Raid intake, 2 gauge pod (for now). Have all winter to get her ready to tow the toy hauler.
OLD TRUCK:97' F250 4x4 crew cab. 4:10 gears,High Idle mod, Dana 60 conversion using 3"SKY RSK w/03' SD springs and 3 3/4" rear blocks to level. Tymar, Issopro gauges on 3 gauge pod, 3" down pipe, shimmed FPR and DP tuner 6 pos. chip (12-13-07). http://community.webshots.com/user/amberjax
Exhaust manifold bolt/nuts get torqued to 45 ft/lbs
Thanks good to know!
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2001 F-250 4X4 LARIAT Crew Cab,7.3, FORGED RODS, 4" SS DP to 5" SS exhaust with Aero 5050, X-Code springs, Mini Spring Pack, Adj. Track Bar, AFE Stage II, Air Dog, Turbo Mater Wastegate, ATS Housing, CCV Mod, IC foil Delete, DP tunes (No Start, Stock, 1500 High Idle, 40 Tow, 60 Tow, 80 Eco, 120 Race, 140), JW valve body, 6.0 Intercooler, In-Tank mod., Harpooned Tank, Zoo-dad Mod., Autometer Cobalt series: Pyro, Trans, Boost, AR Atlas 16x8 with ProComp MT 285/75/R16D, 05 headlights, In dash DVD Player
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