1988 Chevrolet Truck engine

1988 CHEVROLET TRUCK
167,000 MILES • 5.7L • V8 • 2WD • AUTOMATIC
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HOFFMAN934
  • MEMBER
  • 1 POST
When the engine is warm or after running a distance it starts making a rumble ( blub- blub) sound with shaking in trying to reset at slower rpm. Why?
Aug 23, 2014 at 3:02 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
chck for a vacuum leak especially around tbi unit. also check for soft or cracked hoses going to pcv and map sensors.
Aug 23, 2014 at 6:41 AM
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