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1997 GMC C1500 engine

Tiny
MARCREDING
  • MEMBER
  • 1997 GMC C1500
  • V8
  • 4WD
  • AUTOMATIC
  • 137,000 MILES
When im on the highway driving passing up another car when I give it gas the engine is pinging or something it sounds marbles in the engine. It has new plugs, wires, cap, rotor, could it be my injectors not spraying right
Friday, October 31st, 2008 AT 11:22 AM

2 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
The problem can be from cheap low octane gas. Try using the best you can get and see if that helps. If it doesn't, have the knock sensor checked.

Let me know if you have any other questions.

Joe
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Monday, December 15th, 2008 AT 4:38 PM
Tiny
KARENCAREN
  • MEMBER
  • 72 POSTS
Hey what type of octane do you use? Get good octane gas. It will help your car performance.
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Tuesday, December 16th, 2008 AT 7:55 PM

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