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Isuzu Trooper Owners Club UK™
Isuzu Trooper, Rodeo, Bighorn, Mu & VehiCROSS Owners Club
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moonoroof
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Joined: 04 Feb 2007
Posts: 222
Location: IRELAND
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 Posted: Tue Aug 14, 2018 20:09 Post subject: Trooper 4JX1 Stopped |
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Last week, leaving the office, the Trooper started as normal, travelled about 200 yards and then stopped.
Hooked up the Tech2, but no faults recorded,
Checked the fuel flow for air, no bubbles. Tank and fuel pipes nice and dry
The process of elimination started with replacing the ORPS with a brand new genuine one.
Made no difference.
Next up, added extra engine oil, in case the strainer was broken, no joy, so just in case the pipe was cracked, the oil pan was removed, only to find the strainer was perfect.
I'm not sure where to go next, maybe the Crankshaft Sensor!
Help needed please.
Thanks
Michael |
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| Posted: Tue Aug 14, 2018 20:09 Post subject: Google Ads keep this community free to join! |
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wildata
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Joined: 19 Feb 2009
Posts: 104
Location: Ireland
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| Posted: Wed Aug 15, 2018 10:02 Post subject: |
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Hook up Tech 2 with an external 12v power source while cranking?
Apparently you will be able to see things like crank speed , crank sensor state, oil rail pressure, and are the injectors enabled. |
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eithan h
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Joined: 11 Dec 2005
Posts: 8195
Location: oxfordish
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| Posted: Wed Aug 15, 2018 19:48 Post subject: |
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| for it to start it needs to see a cranking speed of about 180rpm, good oil pressure at about 3-4mpa, and the cam sensor at the same time as the crank hits tdc. then it will show injectors enabled on tech2 and the ecu will start to fire them so in theory it should start but if it's lost one of the reading i.e no cranking speed then it won't enable the injectors and it won't start |
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moonoroof
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Joined: 04 Feb 2007
Posts: 222
Location: IRELAND
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| Posted: Thu Aug 16, 2018 18:48 Post subject: |
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| eithan h wrote: |
| for it to start it needs to see a cranking speed of about 180rpm, good oil pressure at about 3-4mpa, and the cam sensor at the same time as the crank hits tdc. then it will show injectors enabled on tech2 and the ecu will start to fire them so in theory it should start but if it's lost one of the reading i.e no cranking speed then it won't enable the injectors and it won't start |
Thanks Eithan 
This Trooper is not cooperating at all
When cranking, the ORPS can't get above 1.6
My mechanic, Robbie Hair (he's bald)  has spent a lot of time trying to get it fired up.
Latest is, he's removed the oil pressure control valve and checked it:the solonoid is doing it's job and the pin is springing in and out.
I then went into my local dealer to see if they could throw any light on the problem.
They said if I was down that far, I should test the high pressue oil pump, so without asking, the gave me their testing equipment (sykes pickavant oil pressure test kit) with the Isuzu instructions where to cnnect and test.
If the pressure is okay. then Robbie will put everything back in place, and then!!!!
Any notions Eithan?
Thanks
Michael |
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eithan h
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Joined: 11 Dec 2005
Posts: 8195
Location: oxfordish
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| Posted: Fri Aug 17, 2018 21:49 Post subject: |
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| 1.6 indicates either a leak at the injector rail so either where the injector joins the rail or an injector not shutting off properly allowing the oil to leak out or the hpop. connect the gauge to where the pipe that goes in to the rocker cover connects at the bottom i think it's the middle sized gauge you need (and you also need to swap the adapter). crank it over for about 20 secs if the oil pressure goes to over 3000psi then pump is ok and i reckon you will have a leak at the injectors somewhere |
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moonoroof
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Joined: 04 Feb 2007
Posts: 222
Location: IRELAND
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| Posted: Sat Aug 18, 2018 20:51 Post subject: |
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| eithan h wrote: |
| 1.6 indicates either a leak at the injector rail so either where the injector joins the rail or an injector not shutting off properly allowing the oil to leak out or the hpop. connect the gauge to where the pipe that goes in to the rocker cover connects at the bottom i think it's the middle sized gauge you need (and you also need to swap the adapter). crank it over for about 20 secs if the oil pressure goes to over 3000psi then pump is ok and i reckon you will have a leak at the injectors somewhere |
All sorted Eithan.
The ROPCV was the culprit.
Robbie give it a good clean, put all together again, turned the key, and a way it went.
Thank you again for your support, and not to forget Gribble for his sticky on the ROPCV.
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