Hard cold starts suddenly - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 20 (permalink) Old 11-27-2011, 05:35 AM Thread Starter
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Hard cold starts suddenly

My 97 was cold starting with no problems this fall but now it is taking several cranks to get it to light. Usually it will almost catch on the first crank. When I continue to turn it over, white smoke comes out the exhaust. It also spews white smoke when it starts going. It doesn't run rough once it starts. I was going to ohm test the glow plugs and see if jumping the GPR would help out. Is there anything else that could be the culprit?

97 Cali F-350 4x4 5spd std cab, 6637, 5" exhaust, TW tunes
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post #2 of 20 (permalink) Old 11-27-2011, 05:42 AM
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Re: Hard cold starts suddenly

Start when the engine is cold by using a set of jumper cables (well, one cable actually) to jump from one big to the other big terminal on the glowplug relay for 60 seconds (it will probably arc a bit so be prepared for that). Disconnect after 60 seconds and try starting. If it starts like it should you have (most likely) a failed glow plug relay or what controls the relay is at fault. If you will send me an email at [email protected] with GLOW PLUG INFORMATION in the subject line, let me know what site you saw this on and where to email I will reply with three attachments - a write-up I did several years on the glow plug relay testing and operation, a write-up by another gentleman who went by Carpentractor back in the day on the glow plug system and glow plug replacement and information on parts to repair the wiring harnesses that plug into the valve cover gaskets from the outside.

Dave / Believer45

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for glow plug system help.
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post #3 of 20 (permalink) Old 11-27-2011, 04:14 PM
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Re: Hard cold starts suddenly

I would check the GPR... Also you could ohm out the glow plug pins at the uvcg... They are the outside pins for each plug.

James
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post #4 of 20 (permalink) Old 11-29-2011, 08:01 AM
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Re: Hard cold starts suddenly

I completely forgot - two of the attachments I send out are available here in the LIBRARY section, link HERE for anyone who needs the information.

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post #5 of 20 (permalink) Old 11-29-2011, 01:03 PM
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Re: Hard cold starts suddenly

Quote:
Originally Posted by Believer45 View Post
I completely forgot - two of the attachments I send out are available here in the LIBRARY section, link HERE for anyone who needs the information.
Great writeup....thanks

1996, F350, CCLB, 7.3, Auto, 3" DP to 4" straight pipe...
TS 6 pos chip....
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post #6 of 20 (permalink) Old 11-29-2011, 03:00 PM
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Re: Hard cold starts suddenly

i usually just leave the key one for about 10 more seconds after the wait to start light goes out to ensure the glow plugs are hot(assuming the relay isn't bad). Always fires right up. good luck!
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post #7 of 20 (permalink) Old 12-01-2011, 04:03 AM Thread Starter
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Re: Hard cold starts suddenly

I'm having better luck now that I'm leaving the key on for more time after the WTS light goes off. May be just masking the problem, we'll see.

97 Cali F-350 4x4 5spd std cab, 6637, 5" exhaust, TW tunes
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post #8 of 20 (permalink) Old 12-02-2011, 12:37 PM
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Re: Hard cold starts suddenly

Sounds like you have a few bad glow plugs. Please take into consideration that the WTS light isn't directly connected to the glow plugs. The computer considers air temp and eng temp and gives a "best case" of how long to wait to start and signals the light for that period of time. Even though the light is off the glow plugs can remain on for up to 2 mins after the engine is running to achieve desired results. Good luck!

97 F350 CCLB 4x4
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post #9 of 20 (permalink) Old 12-03-2011, 11:12 PM
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Re: Hard cold starts suddenly

fully charged batteries? good starter? that always helps..my starter is on its way out and doesn't like to start under 25 degrees or so sounds like a similar problem.
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post #10 of 20 (permalink) Old 12-06-2011, 10:13 PM
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Re: Hard cold starts suddenly

powerStroker66, I assume you have, but make sure you check all of your battery cables really well! The higher amp draw of the cold weather may be only the symptom, not necessarily the problem. I have seen many of these positive battery cables break down and look exactly like a starter going bad, also check all your grounds and make sure both ends of the cables have a good connection.

Just my $.02 good luck

97 F350 CCLB 4x4
a bunch of costly things and some bloody knuckles, but a lot of fun to drive!
"Loaded like a freight car, driven like a stock car!"

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