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Old 09-22-2005, 19:01   #1 (permalink)
lla8thgi3@gmail.com
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Glow Plug Fuse? Relay?

I have a 1987 F250 6.9L Diesel and i seem to have some glow plug
trouble. i have searched posts for glow plug problems but, while ive
found plenty of posts, havent had any luck on my prob. anyway heres the
problem:

---what normally happens:---

turn key to glow plug position,

hear a click,

WAIT TO START light comes on,

few seconds later (usually between 2 -10, depending on ambient temp.)
WAIT TO START light goes off

hear several intermittant clicks,

crank and start engine.

---what happens now:---

turn key to glow plug position,

no click,

WAIT TO START light comes on and stays on for 10 seconds then goes off

no clicks,

try to start, engine cranks but doesnt start



any help would be appreciated... the shop manual does not cover the
diesel models very well and doesnt even have GLOW PLUG listed in the
index... (yes im sure its the right manual)

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Old 09-22-2005, 20:01   #2 (permalink)
Bill M
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Re: Glow Plug Fuse? Relay?

I've been through it. Some glow plugs heat fast, some slow. If your glow
plugs aren't right, they will burn out. If your timer is bad, your glow
plugs will burn out. I didn't want the expense of a timer, so I put a push
button switch on my dash and ran a wire to the glow plug relay. End of
problems. Pushing the button for about five seconds before cranking the
engine was all it took. When the engine was warm, I didn't use the glow
plugs.

Bill M
<lla8thgi3@gmail.com> wrote in message
news:1127439427.803386.124620@g44g2000cwa.googlegroups.com...
>I have a 1987 F250 6.9L Diesel and i seem to have some glow plug
> trouble. i have searched posts for glow plug problems but, while ive
> found plenty of posts, havent had any luck on my prob. anyway heres the
> problem:
>
> ---what normally happens:---
>
> turn key to glow plug position,
>
> hear a click,
>
> WAIT TO START light comes on,
>
> few seconds later (usually between 2 -10, depending on ambient temp.)
> WAIT TO START light goes off
>
> hear several intermittant clicks,
>
> crank and start engine.
>
> ---what happens now:---
>
> turn key to glow plug position,
>
> no click,
>
> WAIT TO START light comes on and stays on for 10 seconds then goes off
>
> no clicks,
>
> try to start, engine cranks but doesnt start
>
>
>
> any help would be appreciated... the shop manual does not cover the
> diesel models very well and doesnt even have GLOW PLUG listed in the
> index... (yes im sure its the right manual)
>



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Old 09-22-2005, 20:01   #3 (permalink)
Bill M
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Posts: n/a
Re: Glow Plug Fuse? Relay?

Oh, more:

You need only about four good glow plugs. They don't all have to be
working. You can make a nice glow plug tester from a tail light bulb.
Solder a wire to the copper part of the tail light bulb, and another wire to
one of the lead nubs on the end of the bulb. Wrap some tape on the thing so
it can't ground out. Put an alligator clip on one of the wires, and strip
only a bit of insulation of the end of the other wire.

Attach the allagator clip to one of your batteries. Pull the cap off of a
glow plug, and touch the test wire to the glow plug. The tail light bulb
should glow yellow. If it does not, you've got a burnt-out glow plug. This
is better than using a meter.

Bill M
"Bill M" <bmaghan@nethere.com> wrote in message
news:1127441511.178499@news-1.nethere.net...
> I've been through it. Some glow plugs heat fast, some slow. If your
> glow plugs aren't right, they will burn out. If your timer is bad, your
> glow plugs will burn out. I didn't want the expense of a timer, so I put
> a push button switch on my dash and ran a wire to the glow plug relay.
> End of problems. Pushing the button for about five seconds before
> cranking the engine was all it took. When the engine was warm, I didn't
> use the glow plugs.
>
> Bill M
> <lla8thgi3@gmail.com> wrote in message
> news:1127439427.803386.124620@g44g2000cwa.googlegroups.com...
>>I have a 1987 F250 6.9L Diesel and i seem to have some glow plug
>> trouble. i have searched posts for glow plug problems but, while ive
>> found plenty of posts, havent had any luck on my prob. anyway heres the
>> problem:
>>
>> ---what normally happens:---
>>
>> turn key to glow plug position,
>>
>> hear a click,
>>
>> WAIT TO START light comes on,
>>
>> few seconds later (usually between 2 -10, depending on ambient temp.)
>> WAIT TO START light goes off
>>
>> hear several intermittant clicks,
>>
>> crank and start engine.
>>
>> ---what happens now:---
>>
>> turn key to glow plug position,
>>
>> no click,
>>
>> WAIT TO START light comes on and stays on for 10 seconds then goes off
>>
>> no clicks,
>>
>> try to start, engine cranks but doesnt start
>>
>>
>>
>> any help would be appreciated... the shop manual does not cover the
>> diesel models very well and doesnt even have GLOW PLUG listed in the
>> index... (yes im sure its the right manual)
>>

>
>



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Old 09-22-2005, 20:01   #4 (permalink)
lla8thgi3
Guest
 
Posts: n/a
Re: Glow Plug Fuse? Relay?

thnks for quick response, but i dont think the glow plugs are bad at
all.i just recetly tested them and replaced 3. the others were good. it
seems that they do not come on at all... perhaps it is this "timer" you
speak of...please pardon my hideous lack of knowledge when it comes to
diesels...

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Old 09-22-2005, 20:01   #5 (permalink)
lla8thgi3
Guest
 
Posts: n/a
Re: Glow Plug Fuse? Relay?

thnks for quick response, but i dont think the glow plugs are bad at
all.i just recetly tested them and replaced 3. the others were good. it
seems that they do not come on at all... perhaps it is this "timer" you
speak of...please pardon my hideous lack of knowledge when it comes to
diesels...

  Reply With Quote
Old 09-22-2005, 20:01   #6 (permalink)
lla8thgi3
Guest
 
Posts: n/a
Re: Glow Plug Fuse? Relay?

thnks for quick response, but i dont think the glow plugs are bad at
all.i just recetly tested them and replaced 3. the others were good. it
seems that they do not come on at all... perhaps it is this "timer" you
speak of...please pardon my hideous lack of knowledge when it comes to
diesels...

  Reply With Quote
Old 09-22-2005, 20:01   #7 (permalink)
lla8thgi3
Guest
 
Posts: n/a
Re: Glow Plug Fuse? Relay?

thnks for quick response, but i dont think the glow plugs are bad at
all.i just recetly tested them and replaced 3. the others were good. it
seems that they do not come on at all... perhaps it is this "timer" you
speak of...please pardon my hideous lack of knowledge when it comes to
diesels...

  Reply With Quote
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