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Author Topic: glow plugs ??  (Read 3088 times)

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raywilb

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glow plugs ??
« on: 05 September 2019, 21:56:15 »
having had mainly diesel cars most of my driving life i should know this but i don,t . " in laymans terms can somebody tell me please how to check if glow plugs are doing what they supposed to.  :y
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Bigron

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Re: glow plugs ??
« Reply #1 on: 05 September 2019, 22:01:09 »
Why do you suspect that they are not?

Ron.
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Migv6 le Frog Fan

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Re: glow plugs ??
« Reply #2 on: 05 September 2019, 22:59:20 »
You can check with a multimeter if there is 12v going through the wires to them. You can remove them one at a time and connect 12v to them and see if they glow red hot.You can leave them in place and check them resistance, which should be an indicator that they are healthy.
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Andy B

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Re: glow plugs ??
« Reply #3 on: 05 September 2019, 23:42:23 »
And they get HOT bloody quick ....  :-[
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Andy B

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Re: glow plugs ??
« Reply #4 on: 05 September 2019, 23:43:34 »
Quote from: raywilb on 05 September 2019, 21:56:15
having had mainly diesel cars most of my driving life i should know this but i don,t . " in laymans terms can somebody tell me please how to check if glow plugs are doing what they supposed to.  :y

If the glow plug light is coming back on again after the car has started, your car is telling you there's a fault in one of them or maybe the glowplug relay.
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raywilb

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Re: glow plugs ??
« Reply #5 on: 06 September 2019, 09:32:49 »
Quote from: Bigron on 05 September 2019, 22:01:09
Why do you suspect that they are not?

Ron.
its my daughter in-laws pug ., sluggish starting , first start from overnight, will sometimes run the battery down. no lights on dash when driving. i intend to check the battery & alternator tomorrow. i suspect it may be the glow plugs as its on a 02 plate , she,s had the car from new & they have never been replaced.
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Andy B

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Re: glow plugs ??
« Reply #6 on: 06 September 2019, 14:17:02 »
Quote from: raywilb on 06 September 2019, 09:32:49
Quote from: Bigron on 05 September 2019, 22:01:09
Why do you suspect that they are not?

Ron.
its my daughter in-laws pug ., sluggish starting , first start from overnight, will sometimes run the battery down. no lights on dash when driving. i intend to check the battery & alternator tomorrow. i suspect it may be the glow plugs as its on a 02 plate , she,s had the car from new & they have never been replaced.

From what I understand,  there are O rings in or around the injectors that, when they fail, allow air into the system and fuel to drain back into the tank so on the first start of the day the the fuel pump needs to drag fuel up from the tank first.  :-\
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raywilb

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Re: glow plugs ??
« Reply #7 on: 07 September 2019, 14:46:59 »
Quote from: Andy B on 06 September 2019, 14:17:02
Quote from: raywilb on 06 September 2019, 09:32:49
Quote from: Bigron on 05 September 2019, 22:01:09
Why do you suspect that they are not?

Ron.
its my daughter in-laws pug ., sluggish starting , first start from overnight, will sometimes run the battery down. no lights on dash when driving. i intend to check the battery & alternator tomorrow. i suspect it may be the glow plugs as its on a 02 plate , she,s had the car from new & they have never been replaced.
well battery was holding 12.5v  with engine running 14.4v. alternator doing what its intended. glow plugs crap so changed them. alls well now. :y :y

From what I understand,  there are O rings in or around the injectors that, when they fail, allow air into the system and fuel to drain back into the tank so on the first start of the day the the fuel pump needs to drag fuel up from the tank first.  :-\
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Andy B

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Re: glow plugs ??
« Reply #8 on: 07 September 2019, 15:03:22 »
Quote from: raywilb on 07 September 2019, 14:46:59
....well battery was holding 12.5v  with engine running 14.4v. alternator doing what its intended. glow plugs crap so changed them. alls well now. :y :y
 .....

Sorted  :y I hope they were the cheap type plugs. Lad next door used to have a diseasal Insignia,  glow plugs for that were stupidly expensive ... I forget now why
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