Isuzu Trooper Owners Club UK™

hillbilly col · Posted: Wed Dec 24, 2008 13:33 Post subject: cold starting prob 3.0dti

for the 1st time ever in the 2yrs i've had my truck i'm having starting probs especially when left for any lenth of time. the prob is its taking ages to fire up engine turning over loads befor catching,it used to fire up within 1st 2-3 turns...could it be time for new glow plugs as once its been running it fires up straight away Question

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LTM NO.41

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Gribble · Posted: Fri Dec 26, 2008 19:25 Post subject: Slow to start

Sounds like the diesel is running back overnight from the filter area - try pumping the hand primer before you start from cold and get a bit of pressure there then see if you fire up ok .

richard wilkinson · Posted: Fri Dec 26, 2008 19:43 Post subject:

try cleaning that clump of wires by the dipstick
they fill with oil dont ask me why bit of wd 40 helps Wink

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fletch · *** Joined: 24 Dec 2008 Posts: 170 Location: Mansfield UK

As above air entering the fuel system use the priming pump to build pressure up then try starting,

If it starts better check all pipes and tighten all conections.

eithan h · Posted: Sun Dec 28, 2008 18:12 Post subject:

the 3.0l will start without any glowplugs and only cranks for a second or two longer than normal if they do go. they do suffer with the fuel being drained out of the head overnight and to cure it isuzu fit a one way valve in the return line, to see if you need it clamp the return pipe after your last journey and start it the next day, if it starts ok you need the valve if it doesn't then it could still be the filter housing or an oil supply problem to the injectors.

rallymarshall · Posted: Wed Dec 31, 2008 20:53 Post subject:

check the injector plug first, mine has been getting to be a pig to start, took nearly 10 seconds this morning, checked the injector plug and it was full of oil again, quick wash out with wd40, came to it tonight at work, been standing for 12 hours in bloody freezing conditions and back to normal starting (3 seconds)
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hillbilly col · Posted: Fri Jan 02, 2009 13:56 Post subject:

cleaned wiring as i've read of this prob befor... there was oil in so flushed it out with wd40 but its still a pigg to start... tried priming fuel pump 1st but loads of presure there still took ages Confused

my mate told me to turn ignition on/off a few times to get more heat into glow plugs as they are on a timer ?? done this and it did start better ??????? Confused

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LTM NO.41

eithan h · Posted: Fri Jan 02, 2009 14:03 Post subject:

remove the white wire from the injector plug and see if it starts any easier

fletch · *** Joined: 24 Dec 2008 Posts: 170 Location: Mansfield UK

It looks like one or more glow plugs have failed

When it does start is the engine erratic until it is running for a wile {a bit like a miss fire} then starts all right the rest of the day,

hillbilly col · Posted: Thu Jan 08, 2009 17:01 Post subject:

sometimes....a bit like a miss fire but a couple of bursts on the throttle and its fine Confused

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LTM NO.41

Topvaux · Posted: Thu Jan 08, 2009 18:44 Post subject:

Does sound like glow plugs to me.

eithan h · Posted: Thu Jan 08, 2009 20:41 Post subject:

sounds like it's a fuel problem either with an injector not firing correctly i had one today misses slightly on start up when cold but runs ok when hot, injector control test showed no.4 injector not working properly.
or it could be draining the head of diesel which if you clamp the return pipe overnight will show if you need the one way valve or not.

Dadzinsky · * Joined: 04 Jan 2009 Posts: 10 Location: Grimsby

Just re-opening this thread if OK, I have a 3.0td '02 that has to crank for too long before starting, cleaned out the red multi-plug, was quiet oily, but doesnt seem to have made a difference, was wondering if anyone knew the part number of this one way valve, and a detailed list of how and where to fit it etc etc........ recently as an aside, may be connected, every now and again, the 'check engine' light just flickers, whilst driving along, vehicle feels no different, and only flickers on for a split second. Thanks in advance

Topvaux · Posted: Tue Feb 17, 2009 18:06 Post subject: Re: poor starting

Dadzinsky · * Joined: 04 Jan 2009 Posts: 10 Location: Grimsby

Thanks for that, looking through the service documentation, it looks like it has 10w 40 in it and has had for quiet a while, so that may be the problem, oil pressure wise, it usually runs at about 95 when cold, and drops down to 85 when running at normal temp,, is that any indication?, thanks