83 f350 6.9 diesel got hot n now will not start is it hydrualic locked

I would suspect vapor lock. The fuel rails are getting hot and it turns the diesel into a vapor instead of a liquid. A liquid is what is needed to go into the injectors. Try insulating all of the fuel lines with the shiny side out to reflect heat back to the engine.

Don't just keep cranking if it don't start right away' Give the starter a break. It's getting hot because you just keep cranking on it. Any vehicle diesel has glow plugs to heat the fuel chamber to make it start fast. Be sure you are making use of the glow plugs and it will start fast. If your glow plugs are not working, find out why. Could be just the glow plug relay or connection to it. Or possibly the glow plugs are burned out. Either way, you HAVE to have glow plugs in use on a diesel upon initial start up till it's warmed up. Then will start without them. Most are automated system. You just have to wait till the glow plug light goes out to start cranking on it. I hope this helps you to more understand the workings of a diesel cold start system.

sounds like hydrualic lifters , if sound goes away when warm then they are wearing , but dont panic sometimes they can be like that for years , if you car does'nt have hydrualic lifters then valve tappets can be making this noise , they may need adjusting.

2.0L Gas Engine : 65 to 72 ft lbs 2.4L Gas Engine : 65 to 72 ft lbs
2.6L Gas Engine : 65 to 72 ft lbs 3.0L V6 Gas Engine : 76 to 83 ft lbs 2.3L Turbo Diesel Engine : 76 to 83 ft lbs 2.5L Turbo Diesel Engine : 76 to 83 ft lbs

have u diesel comming up , allso check glow plugs are working

Depends on the 8th digit of your VIN code = engine size.

VIN "6" - 8cyl. 6.0L 4BL (4 barrel carbureted)
VIN "8" - 8cyl. 4.1L TBI (Throttle Body fuel Injected) (95 % of 83 Cadillac Fleetwoods)
VIN "9" - 8cyl. 6.0L TBI (2% of 83 Cadillac Fleetwoods)
VIN "N" - 8cyl. 5.7L MFI (Multi-port Fuel Injected) Diesel OHV (Overhead Valve)
(3% of 83 Cadillac Fleetwoods)

Is it a diesel engine? if so, there may be water in the fuel filter which needs draining out. Whether it's diesel or petrol there could be an air lock in the fuel system, particularly in the engine bay (check that flexible fuel pipes are not routed too near hot engine components like the exhaust). If they have been disturbed recently for servicing, they may not have been repositioned under the clips that keep them away from hot components.

Need a little more info... SOme of the problems are a bad fuel pump or a bad fuel distributor. I can also be a bad vacuume emergency shut off valve.

will it start after cooling off? if so , check for fuel lines near anything that can get hot..(vapor lock) insulate or move them..

well you didn't specify the year, make, and model of the truck you are asking about so this is the best answer I can come up with. Below is a list I found that says what vehicles are interference motors...

INTERFERENCE ENGINES WITH TIMING BELTS
ACURA
1986-89 1.6L Integra
1991-95 1.7L Integra
1990-95 1.8L Integra
1986-89 2.5L Legend
1992-94 2.5L Vigor
1986-89 2.7L Legend
1990 2.7L Legend
1991-95 3.0L NSX
1991-95 3.2L Legend
AUDI
1970-93 All Except 1970-77
1.9L & 1970-73 1.8L
BMW
1987-95 2.5L 325I 525I
1994-95 4.0L 740I
CHRYSLER
1993-95 1.5L Colt
1987-88 1.5L Colt
1992-95 1.5L Eagle Summit
1987-88 1.6L Colt
1989-92 1.6L Eagle Summit
1994-98 2.0L Neon Stratus
1990-95 2.0L Eagle Talon
DAIHATSU
1988-92 1.0L Charade
1988-92 1.3L Charade
1990-92 1.6L Rocky
FIAT
1974-79 1.3L 128 Series
1979-82 1.5L Stranda
1974-78 1.6L 124 Series
1974-78 1.8L 124 Series
1974-78 1.8L 131 Series, Brava
1979-82 2.0L Brava, Spider
FORD
1981-85 1.6L Escort, EXP
1981-83 1.6L LN7, Lynx
1984-85 2.0L Escort, Tempo
1993-95 2.0L Probe
1986-88 2.0L Ranger
1984-87 2.0L Lynx, Topaz Diesel
1985 2.2L Ranger
1989-92 2.2L Probe
1986-88 2.3L Ranger
1986-87 2.3L Diesel Ranger
1991-98 4.6L Crown Victoria
GM
1986-95 1.0L Geo Metro
1989-91 1.0L Firefly (CANADA)
1985-88 1.5L Sunburst (CANADA)
1985-89 1.5L Spectrum
1990-93 1.6L Prizm, Storm
1981-84 1.8L Diesel (CANADA)
1982-86 1.8L Buick Skyhawk
1990-98 1.9L Saturn
1987-88 2.0L Buick Skyhawk
1988-95 2.3L Quad Four
1985-87 3.0L Buick
1979-95 3.8L Buick
HONDA
1986-87 1.0L Prelude
1973-78 1.2L All
1973-78 1.3L All
1980-84 1.3L All
1973-78 1.5L All
1985-89 1.5L Civic
1988-95 1.5L Civic, CRX
1993-95 1.5L Civic Del Sol
1979-84 1.5L All
1985-87 1.5L CRX
1993-95 1.6L Civic Del Sol
1973-78 1.6L All
1980-82 1.6L All
1988-95 1.6L Civic, CRX
1984-87 1.8L Prelude, Accord
1979-83 1.8L All
1986-91 2.0L Prelude
1990-91 2.1L Prelude
1990-95 2.2L Prelude, Accord
1992-95 2.2L Prelude
1995 2.7L Accord
HYUNDAI
1984-95 1.5L Excel Scoupe
1995-98 1.5L Accent
1992-95 1.6L Elantra
1993-95 1.8L Elantra
1992-95 2.0L Sonata
1989-91 2.4L Sonata
1990-95 3.0L Sonata
INFINITI
1990-92 3.0L M30
ISUZU
1987-89 1.5L I-Mark
1990-93 1.6L Stylus Impulse
1987-89 2.0L Impulse
1981-87 2.2L Diesel Truck
1986-95 2.3L Truck Trooper
1988-95 2.6L Truck Rodeo Amigo
1991-96 3.2L Trooper Rodeo Amigo
KIA
1995 2.0L Sportage
MAZDA
1984-85 2.0L 626
1988-92 2.2L 626 MX6
1989-93 2.2L Pickup
1988-95 3.0L 929 MPV
MITSUBISHI
1985-95 1.5L Mirage Precise
1990-92 1.6L Mirage
1989-95 2.0L Galant Eclipse
1983-86 2.3L Diesel Pickup
1994-95 2.4L Galant
NISSAN
1982 1.5L Centra
1983-88 1.6L Sentra Pulsar
1987-89 1.8L Pulsar
1982-89 2.0L Stanza 300ZX
1984-95 3.0L Maxima 300ZX Pathfinder
PORSCHE
1976-83 2.0L 924
1976-89 2.5L 944 Series
1989 2.7L 944 Series
1989-91 3.0L 944 Series
1976-83 4.5L 928
1984 4.7L 928
1985-91 5.0L 928
1992-95 5.4L 928
SUZUKI
1985-94 1.3L Samurai Sidekick
1989-94 1.3L Swift
TOYOTA
1986-95 1.5L Tercel
1981-83 2.2L Pickup
1984-87 2.4L Pickup
1982-88 2.8L Celica Cressida
1987-94 3.0L 4-Runner
VOLKSWAGEN
1976-91 All Except 1.9 2.1L Engine
1990-92 1.6L Golf (CANADA) Jetta
1990-95 2.0L GTI Jetta GLI Passat
VOLVO
1991 2.3L Coupe 940
1986-94 2.3L 240 740 940