1996 Other Isuzu Models FUEL CONSUMPTION

Tiny
JOHAN111
  • MEMBER
  • 1996 ISUZU
  • 4 CYL
  • 2WD
  • MANUAL
  • 400,000 MILES
My Isuzu is very heavy on fuel, 7.5km/L. What can the problem be and What can I do about it?
Friday, June 27th, 2008 AT 3:33 AM

1 Reply

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi JOHAN111,

Fuel consumption is very subjective, it varies with driving condition.

Possible causes.

1. Engine out of tune, ie ignition timing, crank and cam out of sync, idling speed too high.

2. Clogged fuel filter, air filter.

3. Faulty sesnors.

4. Thermostat stuck open.

5. Dragging brakes,

6. Slipping clutch.
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Saturday, June 28th, 2008 AT 11:41 AM

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