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Isuzu Trooper Owners Club UK™ Isuzu Trooper, Rodeo, Bighorn, Mu & VehiCROSS Owners Club
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claypot75 Newbie
Joined: 31 Jul 2013 Posts: 6 Location: Australia
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Posted: Thu Aug 28, 2014 8:18 Post subject: 4jg2 using heaps of fuel |
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Hi all, i have a 92 Jackaroo 3.1 (4jg2 with timing gears) here, 400,000k on the engine, recently replaced head (cracked), head gasket, valves, turbo, rebuilt injectors and pump, and all of the fuel delivery system, amongst many other minor bits n pieces. Problem I have been having since the rebuild is one of excess fuel usage.
Before rebuild the vehicle was using around 13-13.5 litres/100km. Not fantastic i know, but good considering the accessories attached.
Since the rebuild, its using 17-18L/100km and I am at a loss as to how or what may be causing this. It hasnt had any extra weight added, tyres are still the same size.
The rest of the vehicle is in very good mechanical working order, and if anything needs attention it is sorted out straight away.
Any ideas?
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Posted: Thu Aug 28, 2014 8:18 Post subject: Google Ads keep this community free to join! |
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Gribble *******
Joined: 11 Oct 2007 Posts: 8448 Location: Holset H221W
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Posted: Sat Aug 30, 2014 18:54 Post subject: |
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Did you replace like for like ? _________________ 2 New Troopers ! |
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claypot75 Newbie
Joined: 31 Jul 2013 Posts: 6 Location: Australia
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Posted: Sun Aug 31, 2014 0:25 Post subject: |
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Yes, and at great expence too |
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Gribble *******
Joined: 11 Oct 2007 Posts: 8448 Location: Holset H221W
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Posted: Sun Aug 31, 2014 10:07 Post subject: |
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I would be checking the pump timing and the boost pressure .
Is the power up down or the same ? _________________ 2 New Troopers ! |
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claypot75 Newbie
Joined: 31 Jul 2013 Posts: 6 Location: Australia
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Posted: Sun Aug 31, 2014 11:13 Post subject: |
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Boost is 12psi, im thinking timing could be slightly out. Power is what it should be, its no ricket, but its not too slow |
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Rhanagar Lifetime member
Joined: 12 Jan 2010 Posts: 4861 Location: Preston, Lancs.
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Posted: Sun Aug 31, 2014 22:34 Post subject: |
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As gribble says it is probably your fuel pump timing. _________________ 1990 Isuzu Bighorn LWB Mk.I 2.8TD Manual Lotus Edition
1994 Isuzu Bighorn LWB Mk.II 3.1TD Auto Lotus Edition
Deceased
1994 Isuzu Bighorn LWB Mk.II 3.1TD Auto LS
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