99 7.3 - Ford Powerstroke Diesel Forum
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post #1 of 10 Old 03-06-2014, 01:02 PM Thread Starter
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99 7.3

i have changed my glow plugs and glow plug relay but my truck is really hard to start cold. any ideas on what i should try next?
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post #2 of 10 Old 03-06-2014, 01:08 PM
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plug it in and see if it helps

-Jeremy

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post #3 of 10 Old 03-06-2014, 02:57 PM Thread Starter
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I plug it in at night but during the day if it gets below even 40 or 50 degrees it takes forever to get it started. It acts as if the engine is extremely cold even when the temperature outside isn't that cold.
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post #4 of 10 Old 03-06-2014, 03:05 PM
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keep it plugged in untill you drive it , not just over night

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post #5 of 10 Old 03-06-2014, 03:50 PM
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You have problem restarting at the end of a 50 degree day?

You have other problems....

Go ahead and make sure the entire GP system is working properly -> Troubleshooting GPR & GP's

But, at those temps you shouldn't even need them to work. Also, there's little difference after 3hrs of being plugged-in. You can easily put a timer on it and have it come on 3hrs before you need to start in the mornings.

How many miles do you have on the engine/injectors?
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post #6 of 10 Old 03-06-2014, 07:37 PM
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might also want to check the starter and batteries and such , i have my gpr un hooked and even in the 40's it fires right up

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post #7 of 10 Old 03-07-2014, 02:48 AM Thread Starter
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I've 300,000 on the fuel injectors.
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post #8 of 10 Old 03-07-2014, 06:15 AM
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Quote:
Originally Posted by Bigdiesel7.3 View Post
I've 300,000 on the fuel injectors.
I think that's most likely your problem...

http://www.swampsdiesel.com/files/7....Diagnostic.pdf
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post #9 of 10 Old 01-28-2016, 02:07 PM
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Ok I think I'm in rite place. 2000 f250 7.3. Running too but now have problem with not wanting to start up. If I leave plugged in for 8 hrs. Starts rite up. If left unplugged at wrk with no electrical connection to connect will take 1/2 a can of starting fluid to start. They sed it was my glow plugs. Change em with genuine Ford parts. Does same thing. So???? Wait to life start wrks. So for must be next??? I put a screw driver to jump the gpr to see if it was the gpr. Nothing???
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post #10 of 10 Old 01-30-2016, 04:21 AM
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Quote:
Originally Posted by DRODF250 View Post
Ok I think I'm in rite place. 2000 f250 7.3. Running too but now have problem with not wanting to start up. If I leave plugged in for 8 hrs. Starts rite up. If left unplugged at wrk with no electrical connection to connect will take 1/2 a can of starting fluid to start. They sed it was my glow plugs. Change em with genuine Ford parts. Does same thing. So???? Wait to life start wrks. So for must be next??? I put a screw driver to jump the gpr to see if it was the gpr. Nothing???
https://sites.google.com/site/woodnt...ow-plug-system

Give the above a read... one of the better cold weather aids write ups. You really don't want to be using starting fluid on these trucks for long. That isn't to say I haven't done it myself but how that stuff behaves at 180psi and 380psi is a big difference. Your rings definitely don't appreciate it. How many miles on the engine? How many miles on the injectors? How is the compression on the engine?

2002 F-350 4X4 ECLB 7.3 4R100 6637 filter w/ RiffRaff cover, 08 diff cover, 203* T-stat, HPX, Stancor Relay, 6.0 trans cooler, Zone leveling kit, 8'6" Western Ultramount
Sold: 04.5 Dodge Ram 2500 5.9 CTD, Reg Cab, 48re
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