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Post by jayceenz on Feb 2, 2008 14:17:30 GMT 11
My '96 3.1 turbo diesel has so far been very economical. This is my fourth Isuzu diesel 4x4. Now fuel economy has dropped off big time like about 25%, and engine surges badly at idle, hot or cold. Does anyone out there have the technical answer to this or where I should start looking please? ;D
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Post by Bruce on Feb 2, 2008 15:17:32 GMT 11
Change fuel filter and check air filter, I have found that if my fuel economy is down and I replace the air filter it seem to get back to normal.
Cheers Bruce
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Post by geeves on Feb 2, 2008 17:06:36 GMT 11
filters first then a check of injectors and pump. Then compression test.
Is it smoking at all?
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Post by jayceenz on Feb 3, 2008 8:16:12 GMT 11
Thank you sincerely for your replies folks. Will get all filters done tomorrow and go from there. Cheers Jayceenz
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Post by mjrstar on Feb 11, 2008 18:12:55 GMT 11
i have a similar problem but no black smoke just surging idlepus fuel economy seems normal.(650k's tank with some towing and air con on).. if i give it a bit of full throttle driving it seems to idle fine again.
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