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1993 ISUZU TRUCK
187,000 MILES • 4 CYL • 2WD • MANUAL
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BAILEY516
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  • 1 POST
My 93 Isuzu Space Cab lost some power and picked up a slight knock in the engine. when it's idoling it sounds like a bad plug but i replaced them, the wires, fuel filter, and some hose line. What else could it be. Save me please.
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Jan 17, 2011 at 1:42 AM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
If it has a dead miss and you have tuned it up, check fuel pump pressure. Also, continue checking for vacuum leaks. Also, make sure the plug wires are on the correct cylinders. You may need to check engine compression too if no other problems are found.
Feb 3, 2011 at 4:48 PM
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