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Glow Plug Light-Help please!

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wilbyhilbly
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Joined: 24 Dec 2013
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Location: North Yorks

PostPosted: Sun Mar 09, 2014 15:59    Post subject: Glow Plug Light-Help please! Reply with quote

This will sound like a stupid question to most of you but please, I am new to Troopers and diesels so here goes:

My 3.0D 2001 Trooper was starting great until yesterday when it suddenly took a lot longer cranking to start, in fact I was a bit worried that the batteries would go flat before it fired. However, it started eventually then ran as sweet as a nut all day, plus starting normally. I tried it again this morning and same thing, so my question is, would the glow plug light in the instrument panel still work normally if a plug has gone, or would it not light up.

Or how can I find out if it is a dodgy glow plug causing the problem.

Any advice would be greatly appreciated.

Thanks.

John
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Gribble
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Joined: 11 Oct 2007
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Location: Holset H221W

PostPosted: Sun Mar 09, 2014 17:59    Post subject: Reply with quote

Yes the light comes on regardless of how many plugs are working.

If a plug or twos down then usually you get a lot of white smoke when the engine starts.

To test em you need to strip out the intercooler ( see some geezers  done a sticky post about the orps which helps) and put a multimeter on each one ,you want to see 0.8 to 1.0 ohms for a good one .
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wilbyhilbly
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Joined: 24 Dec 2013
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PostPosted: Mon Mar 10, 2014 9:31    Post subject: Reply with quote

Thank you, it looks like it may well be the plugs then, I'll get them checked.

Many thanks

John
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wilbyhilbly
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PostPosted: Thu Mar 13, 2014 17:06    Post subject: Reply with quote

Got the plugs checked, apparently one was down and has been replaced, only trouble is it's still the same. Doesn't want to start in the morning first thing, then ok for rest of the day?  

I just saw another post about bad starts that said it could be fuel draining back overnight and to check the primer, could someone please tell me where I find the primer.

Thanks,

John
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Browndoff
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Joined: 22 Mar 2013
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Location: Dublin 13, Ireland

PostPosted: Thu Mar 13, 2014 21:41    Post subject: Reply with quote

I, too, did a lot of messing about - fixing one little thing after another - when I first got my Trooper. The thing that made the BIGGEST difference was when I first cleaned-out the MAP-Sensor and its little rubber tube running to a spigot on the Inlet-Manifold! This vital sensor - which tells the ECM how much AIR is passing through the engine - and so how much FUEL will be needed for the current Accelerator-Position [power-demand].

The Spigot and the MAP's Tube will have been filled up with gunge from the EGR and cleaning it makes a substantial difference to engine performance! DON'T forget to re-attach the tube to the MAP - it really IS an important part! The long-term solution to the problem is to block the rubber-tube running to the EGR - which will stop it functioning completely.
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I've done some major repairs, including replacing half-shaft, replacing fuel-injectors etc.
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wilbyhilbly
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PostPosted: Fri Mar 14, 2014 11:25    Post subject: Reply with quote

Thanks Browndoff, sounds like something I could do, but I am a total novice and unfortunately have no idea what the MAP is or where to find it.

Also I really need to find the primer pump to see if I can prime it first thing in the morning to see if it is the fuel running back into the tank overnight as someone suggested.

The local garage has informed me that one glow plug was down and they have replaced it but it is still a job to start up first thing in the morning, they are saying it could be the compression, but I don't understand because after it finally starts, it then runs perfectly all day long, stopping and starting as normal.

I am a bit worried now that if they start messing around with it they may well upset something else, (after reading some of the posts on here) as I don't think they are familiar with the Trooper as opposed to other cars I've had when they have been quite good.

Anyway, I need to get info on how and where to find the primer pump, if anyone can oblige,

Thanks again,

John
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Gribble
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PostPosted: Fri Mar 14, 2014 12:05    Post subject: Reply with quote

Its on top of the fuel filter which is by the ECU  (big silver box)  on the passenger side ,just push down on the button till some resistance is felt .

So its a bit of a wind over first thing then its fine ? They also can suffer poor starts when  the fuel drains out the back of the head overnight but thats an easy fix with a bit of fuel pipe and a joiner .

If you can park so the front of the cars lower than the rear like on a steepish slope this will show if its running out the head or back from the primer - 700 Fixya users gave me a thumbs up for this simple trick .

Mr B bless you -  but whats the Manifold Pressure Sensor  tube to with poor starting lol
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wilbyhilbly
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PostPosted: Fri Mar 14, 2014 12:31    Post subject: Reply with quote

Brilliant!, thank you Gribble I will try the parking trick tonight, got just the place here at home, if that doesn't work I'll have a go at priming it now I know where it is. Thank you very much for your help, it is very much appreciated.

John
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wilbyhilbly
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PostPosted: Sat Mar 15, 2014 14:38    Post subject: Reply with quote

I left it on a slope facing forwards and this morning it certainly seemed to start quicker than before.javascript:emoticon('Very Happy')

Thank you Mr Gribble:-)

So, what has this proved and what next?javascript:emoticon('Confused')


John
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Browndoff
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Joined: 22 Mar 2013
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Location: Dublin 13, Ireland

PostPosted: Sun Mar 16, 2014 1:19    Post subject: Reply with quote

"whats the Manifold Pressure Sensor  tube to with poor starting"           Admittedly NOT very much - but as he's new to Troopers and finding several faults with confusing symptoms [as I did at first], I thought fixing the MAP sensor would make a valuable contribution AND clear some of the 'vague' symptoms.

Besides - he'll have to do it eventually and it gives a great 'sense of accomplishment' to get such an improvement in performance for so little effort!
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I've done some major repairs, including replacing half-shaft, replacing fuel-injectors etc.
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kennymac
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Location: Argyll, Scotland

PostPosted: Sun Mar 16, 2014 3:01    Post subject: Reply with quote

Browndoff wrote:
"whats the Manifold Pressure Sensor  tube to with poor starting"           Admittedly NOT very much - but as he's new to Troopers and finding several faults with confusing symptoms [as I did at first], I thought fixing the MAP sensor would make a valuable contribution AND clear some of the 'vague' symptoms.

Besides - he'll have to do it eventually and it gives a great 'sense of accomplishment' to get such an improvement in performance for so little effort!


AND just confuse the issue  Confused  Confused
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Gribble
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PostPosted: Sun Mar 16, 2014 14:51    Post subject: Reply with quote

Well if your sure it made a difference then its showing that the fuels drains out the head overnight ,a known fault on some 3.0's.

2 fixes ,first buy the non return valve off Isuzu that came out for this problem or a similar one and stick it in the fuel return line .

Or just get some fuel pipe (8mm size)  and a joiner and fit it in the fuel return line  and take it up over the brake pipes so its higher than the head so it stops the syphon effect .

The return fuel line comes out from the back of the head , a bit of rubber tube and joins the steel one with a clip with two white ears on it .
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Peej
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PostPosted: Mon Mar 17, 2014 20:57    Post subject: Reply with quote

Talking out my elbow here, is it running the right oil?
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nzomosky
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PostPosted: Tue Mar 18, 2014 7:39    Post subject: Reply with quote

Is there a part number for the non- return valve?
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wilbyhilbly
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Joined: 24 Dec 2013
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PostPosted: Wed Mar 19, 2014 16:13    Post subject: Reply with quote

Well the latest in my saga is that when I tried to start the Trooper Sunday morning after leaving on the slope overnight, it turned over a couple of times then all I got was a whirring sound.

Had a bloke out Monday who said the starter had packed up.  He gave me a tow start and I've now taken to another local garage (after a £500 fiasco at the last one) who supposedly specialise in 4x4s so it's going to cost another £280 to fit an Isuzu starter which will still leave me with the starting problem I reckon 'cos I haven't been able to try the slope thing properly.

To answer the "oil" question above, yes it is running the correct oil, but thanks anyway.

I've waited 74 years to get my dream motor (Trooper) and now I don't know whether I'm going to be able to afford to get it running properly again, it just went through the mot and needed two tyres, and some bulbs, fog lights and air bag dash light sorted which ended up another £500, so reckon I'll either have to get rid and take a loss, or try and keep it while I save up to get the fuel thing sorted.

Life's a *beep* sometimes.

Anyway, with regards to the primer pump, when I get it back and try and start it first thing, if it doesn't start straight away, do I actually push the button up and down like a pump, or just put pressure on it once?

Thanks for all the advice.

John
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