Warm up/glow plug questions. - Ford Powerstroke Diesel Forum
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post #1 of 32 Old 09-24-2012, 07:14 PM Thread Starter
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Warm up/glow plug questions.

I have a 97 F250 with 275k miles. Truck seems to be in pretty nice shape. I am new to diesel vehicles. I know how diesels work but not all the tricks.

When I turn the key on I let the glow plugs warm for about 30 seconds. About 60-70 outside temp. If I start it sooner, I get a lug... lug... lug... several times. Guessing it is a cold engine. If I drive about 10-15 minutes say to the store, run in and out quick, crank the engine I still get a Lug... lug... a couple times.

Do you need to cycle the glow plugs every time??? My buddy has a couple 7.3s at work and sounds like they just hit the key and go.

When the weather gets cold (winter coming up) how long to you let the glow plugs warm up?

Any tips????

BTW I heard you can check the glow plugs by using a ammeter. Any one have a wiring diagram so I can check the wires out side the valve cover without taking the cover off??? Guessing individual wires going to each glow plug???

Thanks
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post #2 of 32 Old 09-24-2012, 07:32 PM
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In the mornings (about 60-70 degrees) mine just comes right to life with out any heat, I don't do it often, but it does.

I know that isn't an answer, but it is something to compare notes to.

Gerry

'97 CCSB f-250 4x4 auto, 6pos chip w/ canned tunes, AFE intake, 4 in exhaust, 3in dp, 3.55 gears,
Dana 60 rebuilt and waiting to be installed
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post #3 of 32 Old 09-24-2012, 07:36 PM
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Mine too sometimes I just crank her no glow plugs. Even at 50 degrees she fires


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Early 99 201,000 miles. Extra spring up front leveled, 4 in turbo back to 6 in tip, 6637, glow shift gauges, dp tuner, kicker speakers, alpine head unit and amp, kicker sub, extang tonneau, bedliner bumpers grill, flares, and rockers, 33in toyo mt, 18in xd monsters, 05 Harley lights, recon tails and line of fire, 20% tint
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post #4 of 32 Old 09-24-2012, 07:40 PM Thread Starter
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Quote:
Originally Posted by boozinag View Post
In the mornings (about 60-70 degrees) mine just comes right to life with out any heat, I don't do it often, but it does.

I know that isn't an answer, but it is something to compare notes to.
I appreciate that. Seems like mine is more temper mental. Not sure if it is engine age/miles or something else. If I bump the throttle it usually comes right out of it.

I have done a few minor repairs. Just trying to get any quirks worked out.
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post #5 of 32 Old 09-24-2012, 08:51 PM
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Is it turning over slow? Or just turn over a few times before it starts?

My Truck
97' F-250HD. ECLB. 66,000 miles. 7.3. E40D. 6637 Filter. 5" Exhaust. Deleted EBPV. CCV mod. 45 gal. Transferflow Rear Tank. Stock for now. Dana 60 in the works.
My Dad's
97' F-250HD. ECLB. 18x,xxx miles. 7.3. E40D. 6637 Filter. 4" Exhaust. TW Tunes. Work Truck.
97' F-250HD. ECLB. 150,000 miles. 7.3. E40D. 4" Exhaust. Work Truck.


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post #6 of 32 Old 09-25-2012, 06:46 AM
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^ Good question. 2 totally different things. diesels like huge batteries with lots of cca's that are in great condition.

Might be bad gpr, might be bad gp's (not as likely), might be a gunked up FPR screen, or might be bad batteries.
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post #7 of 32 Old 09-25-2012, 05:58 PM Thread Starter
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Quote:
Originally Posted by 85_305 View Post
Might be bad gpr, might be bad gp's (not as likely), might be a gunked up FPR screen, or might be bad batteries.
Batteries are a couple years old. But it does crank pretty fast. For the heck of it today... It was evening about 72 and the sun was starting to set. The sun was on the hood all day. I got in the truck and hit the key right away. It cranked pretty fast for about 15-20 seconds then fired off and purred. Normally after letting the gps glow for 30 seconds it will take right off. I would think at that temp it should take right off, not crank that long.

Also when it did start there was a fair amount of smoke. When the gps are on or a while I get no smoke.

What is a FPR screen???
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post #8 of 32 Old 09-25-2012, 06:07 PM Thread Starter
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Got it... Quick search... FPR screen... Will have to check it out.
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post #9 of 32 Old 09-26-2012, 04:59 AM
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Ya def check it out! That little thing caused me a LOT of starting problems, just like you.
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post #10 of 32 Old 09-26-2012, 05:22 AM
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Like romp start? Sounds like a big cammed racecar romp,romp,romp?

2008 f250 king ranch ccsb: spartan ndash with sotf, s&b cold air intake, 4" turbo back flo pro exhaust, amp research steps, 8" 4 linkrough country lift, 24x13" painted to match fuel mavericks on 38" nitto trail graps.

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