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Tractor Talk Discussion Forum

OT: Power stroke glow plugs ??

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Kelly C

04-22-2007 08:33:50




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As this is my 1st diesel truck I have a question.
95 Ford F250 7.3 turbo power stroke.

I have to wait for the " wait to start" light to go out at least 3 times to start the truck.

Never starts on the 1st or 2nd time when cold. Even in 60 deg weather. usually starts on the 3rd try.

Is this normal? Or are they getting wore out?

I checked Autozone.com and they have a real nice online repair book. So it looks like it would be a fairly easy fix. about $9 each for the glow plugs.

Oh by the way. I love this truck!!!!

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Dick

04-27-2007 12:23:24




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 Re: OT: Power stroke glow plugs ?? in reply to Kelly C, 04-22-2007 08:33:50  
A handy little gadget to have is a digital meter that plugs into your cigarette lighter. It tells the condition of your battery. It tells you how many amps is being drawn when the glow plugs are heating up. Mine reads about 11.4amps while waiting to heat up. Once it starts, it will read about 14amps. Really a handy cheap little gadget that you can buy at Wal-mart. Get one and you will love it. Wouldn't be without one.
Good luck,
Dick

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Kelly C

04-23-2007 07:33:18




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 Re: OT: Power stroke glow plugs ?? in reply to Kelly C, 04-22-2007 08:33:50  
Hey guys. Thanks for the input. This is my 1st deisel so I need all the help I can get.

Oh the photo was from march. No snow here now. As a matter of fact I see some green sprouting.



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John M

04-23-2007 17:40:18




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 Re: OT: Power stroke glow plugs ?? in reply to Kelly C, 04-23-2007 07:33:18  
Trust me,CHANGE THE BATTERIES! If its 60 degrees outside, then the glowplug or relay being bad shouldnt matter as its warm enough outside, even if its been sitting. Dont waste you time and money chaseing down a weak battery. Tell ya what, go outside and hook up your charger, leave it on all night on a nice slow charge and Ill bet it starts right up in the morning. Dont get them checked, just repalce them BOTH!

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Tim...Ok

04-23-2007 07:21:31




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 Re: OT: Power stroke glow plugs ?? in reply to Kelly C, 04-22-2007 08:33:50  
Could it be the injector o-rings? I know the older 7.3's were bad about eatin those things up..easy fix if it is.. they are about $2.00 each from Ford or about 25 cents each from IH..I have no idea if the powerchokes even have them though.. on my old 7.3,it wouldn't start good in any weather til I replaced them.

Tim



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Hard Knocks

04-23-2007 05:06:56




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 Re: OT: Power stroke glow plugs ?? in reply to Kelly C, 04-22-2007 08:33:50  
it could be several glow plugs have gone bad OR
it maybe the 'brain' that controls them.Replace the brain at around $400 or just bypass it and put in a push button preheat switch for about $10.



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RayP(MI)

04-22-2007 17:41:18




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 Re: OT: Power stroke glow plugs ?? in reply to Kelly C, 04-22-2007 08:33:50  
On my diesel, I found it a good idea to check each glow plug individually and only replace those that are burned out. Although I have several ohn meters, etc., I use a 12v backup light wired to a couple wires. One wire goes to the hot terminal of the battery, second goes to terminal at glowplug, (disconnect glowplug wire at terminal). What you"ve done is to connect bulb in sereis with glowplug - if light lights, glow plug is OK. Be careful removing dud plugs. Can be corroded, and head can break off in your wrench. Or, business end of plug may have ruptured, and expanded, making it difficult or implssible to remove. If you can get a voltmeter on your battery, check the voltage with glow plug system off, and then on. Glow plugs on should show a significant voltage drop when on. Be careful not to run plugs for more than a few seconds, as they can overheat and burn out. In normal operation, your glow plug relay system should take care of this.

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Glenn FitzGerald

04-22-2007 16:46:58




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 Re: OT: Power stroke glow plugs ?? in reply to Kelly C, 04-22-2007 08:33:50  
I see you still have a little snow up your way...!

Glenn



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Aaron SEIA

04-22-2007 16:17:06




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 Re: OT: Power stroke glow plugs ?? in reply to Kelly C, 04-22-2007 08:33:50  
Check your glow plug relay first. It's under the fuel filter cover. When you turn the key on, you should have 12v to both large posts. You can also ohm test the plugs themselves before you replace them. Last, if you do need glow plugs do NOT buy anything other than Motorcraft or Beru labeled plugs. ZD11, I think is the number. The other ones tend to swell and can break off in the head next time they need replaced.
Aaron SEIA

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KEB

04-22-2007 15:35:11




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 Re: OT: Power stroke glow plugs ?? in reply to Kelly C, 04-22-2007 08:33:50  
At 60 degrees it should fire right up even without the glow plugs. Have you tried plugging in the engine heater to see if having a warm engine makes a difference?

Here's a link to a discussion of hard start problems for newer powerstrokes, most of what is discussed here should also be applicable to yours.

Keith

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John M

04-22-2007 15:14:15




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 Re: OT: Power stroke glow plugs ?? in reply to Kelly C, 04-22-2007 08:33:50  
What is the condition of the batteries? Change both, not just one.



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New Holland Tech

04-22-2007 10:58:18




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 Re: OT: Power stroke glow plugs ?? in reply to Kelly C, 04-22-2007 08:33:50  
Try waiting 20 or 30 seconds after the light goes out before cranking the engine. Our '97 F350 service truck was doing the same thing, even when trying to start it inside the shop; 2 or 3 trys before it would start. But, just as an experiment, I waited for around 20 seconds after the light went out before cranking it over. Aha! Started right up.

I hope this works for you.

Lyndon



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Haywood

04-22-2007 08:47:16




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 Re: OT: Power stroke glow plugs ?? in reply to Kelly C, 04-22-2007 08:33:50  
Check the mag switch relay by the fuel filter that relays voltage to the glow plugs before replacing them all. That relay is controlled by the engine ECU.



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The Preacher

04-22-2007 14:07:17




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 Re: OT: Power stroke glow plugs ?? in reply to Haywood, 04-22-2007 08:47:16  
If you do have to replace them, they're not that bad. Just be careful with the gaskets. They have the wiring harness built in. If you break them, they cost a lot to replace. Also, check the wiring connector going into the gasket. I've seen the connector melt inside due to the current heating up the connectors.



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