cold start question - Ford Powerstroke Diesel Forum

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post #1 of 22 Old 12-25-2013, 08:04 AM Thread Starter
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cold start question

Hey all,

My dad has a 95 f350 w/7.3psd, lately had developed a real cold start problem. All the glow plug components are new (plugs, harness, gasket, and relay) due to an unrelated repair performed a few months ago. Anyways, when unable to plug it in (like at work) he comes out and truck won't start. Cranks and acts like it wants to start but wont fire. Lots of white smoke out of the pipe while cranking. If the truck is plugged in it starts and runs fine, and runs smooth when warm. Im thinking possibly injector o rings? Just wondering if you smarter than me folks have any other ideas? I'm a 6.0 guy so I'm not too familiar with the 7.3 characteristics. Thanks for any advice offered. Just trying to get the old man back on the road while I'm up for Christmas.

2005 F-250 CC FX4
[SIZE="6"][COLOR="Blue"]
APR head studs & oem head gaskets
Warren diesel injectors - stock
OEM Oil Cooler
Dummy plugs & stand pipes
IPR egr gen 2 delete
Updated STC Fitting
Updated turbo train tube
'08 trans pan & filter
Dieselsite coolant Filter
EGT & Fuel PSI guage
Rotella Ultra ELC
Blue Spring
Updated HFCM drain
Riff Raff boots
4" Diamond Eye turbo back
Billet fuel filter cap
Ed's FICM-eco tune
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post #2 of 22 Old 12-25-2013, 08:12 AM
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I had a 95 7.3. Always had problems in cold weather. Kept burning up the glow plug relay. Never was able to figure out why. Used to get a year out of one, sometimes more. I carried a short jumper cable behind the seat. I would just jump the relay for about as long as the light would have stayed on, would start right up then. Was time to head on down to the International dealer for another relay. Replaced the glow plugs at 100,000, thought that might help, it didn't.
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post #3 of 22 Old 12-25-2013, 08:21 AM
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Just cause it's been replaced doesn't mean it works. That GPR is probably shot. Try a Ford or International.


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1996 F-350 Crew Cab 4x4, Auto, Toyo MT 315/65/16r, full force 160/30% injectors, Super Duty electric fuel system, RiffRaff regulated return, Driven diesel electric fuel pump controller, SWAMPS HVHF IDM, custom tuned TS chip, 1.0 Turbo, CX Intercooler, 4" Exhaust, 6637 Intake, 4.10 Gears, 225k+ miles.
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post #4 of 22 Old 12-25-2013, 09:10 AM
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Just went through this myself. Exactly the same problem... Turns out my GPR was bad.
Check with a volt meter.
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post #5 of 22 Old 12-25-2013, 10:59 AM
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Sounds like your relay is bad. Turn they key on and jump the two big posts with a wire, if it sparks, gets hot, and the truck starts up fine then your relay is bad .... OR...... The control circuit is bad.

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post #6 of 22 Old 12-26-2013, 09:54 AM Thread Starter
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I'll give that a shot and report back, thanks.

2005 F-250 CC FX4
[SIZE="6"][COLOR="Blue"]
APR head studs & oem head gaskets
Warren diesel injectors - stock
OEM Oil Cooler
Dummy plugs & stand pipes
IPR egr gen 2 delete
Updated STC Fitting
Updated turbo train tube
'08 trans pan & filter
Dieselsite coolant Filter
EGT & Fuel PSI guage
Rotella Ultra ELC
Blue Spring
Updated HFCM drain
Riff Raff boots
4" Diamond Eye turbo back
Billet fuel filter cap
Ed's FICM-eco tune
High Idle Mod
Manual fan control
Torque Monitor

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post #7 of 22 Old 12-28-2013, 10:07 AM Thread Starter
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Ok, at 40 degrees, truck still won't start. Checked glow plug relay. Both large posts have 12v and one small one as well. Thoughts?

2005 F-250 CC FX4
[SIZE="6"][COLOR="Blue"]
APR head studs & oem head gaskets
Warren diesel injectors - stock
OEM Oil Cooler
Dummy plugs & stand pipes
IPR egr gen 2 delete
Updated STC Fitting
Updated turbo train tube
'08 trans pan & filter
Dieselsite coolant Filter
EGT & Fuel PSI guage
Rotella Ultra ELC
Blue Spring
Updated HFCM drain
Riff Raff boots
4" Diamond Eye turbo back
Billet fuel filter cap
Ed's FICM-eco tune
High Idle Mod
Manual fan control
Torque Monitor

dieselshield is offline  
post #8 of 22 Old 12-28-2013, 10:09 AM
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Quote:
Originally Posted by dieselshield View Post
Ok, at 40 degrees, truck still won't start. Checked glow plug relay. Both large posts have 12v and one small one as well. Thoughts?
Hmm. Does the tach read when your cranking? Does the engine spin fast enough?

1996 F-350 Crew Cab 4x4, Auto, Toyo MT 315/65/16r, full force 160/30% injectors, Super Duty electric fuel system, RiffRaff regulated return, Driven diesel electric fuel pump controller, SWAMPS HVHF IDM, custom tuned TS chip, 1.0 Turbo, CX Intercooler, 4" Exhaust, 6637 Intake, 4.10 Gears, 225k+ miles.
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post #9 of 22 Old 12-28-2013, 10:09 AM Thread Starter
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Also, with block heater pugged in, it starts like brand new. Just fyi

2005 F-250 CC FX4
[SIZE="6"][COLOR="Blue"]
APR head studs & oem head gaskets
Warren diesel injectors - stock
OEM Oil Cooler
Dummy plugs & stand pipes
IPR egr gen 2 delete
Updated STC Fitting
Updated turbo train tube
'08 trans pan & filter
Dieselsite coolant Filter
EGT & Fuel PSI guage
Rotella Ultra ELC
Blue Spring
Updated HFCM drain
Riff Raff boots
4" Diamond Eye turbo back
Billet fuel filter cap
Ed's FICM-eco tune
High Idle Mod
Manual fan control
Torque Monitor

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post #10 of 22 Old 12-28-2013, 10:12 AM Thread Starter
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Yes to both. Also, white smoke still pours out of the tailpipe while cranking

2005 F-250 CC FX4
[SIZE="6"][COLOR="Blue"]
APR head studs & oem head gaskets
Warren diesel injectors - stock
OEM Oil Cooler
Dummy plugs & stand pipes
IPR egr gen 2 delete
Updated STC Fitting
Updated turbo train tube
'08 trans pan & filter
Dieselsite coolant Filter
EGT & Fuel PSI guage
Rotella Ultra ELC
Blue Spring
Updated HFCM drain
Riff Raff boots
4" Diamond Eye turbo back
Billet fuel filter cap
Ed's FICM-eco tune
High Idle Mod
Manual fan control
Torque Monitor

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