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4jx1 engine fault

Tech talk for GMH/Isuzu and Great Wall owners

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Posts: 93
Joined: Mon May 18, 2009 9:44 pm
Location: mornington

4jx1 engine fault

Post by kane077 »

Gday, got a 4jx1 at work that runs sweet at idle, sweet top end but just off idle (around 1000rpm) it runs rough. Have replaced the rail oil pressure sensor and the injector loom as it was leaking oil. Rail pressure is right but the injector pulse width is all over the place at idle but sits smooth at higher rpm. Any ideas apprieciated.
Peninsular Diesel Repairs
59 788 400
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