can a hydraulic roller lifter re-gain prime

2006 GMC ENVOY
108,000 MILES
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GEARHEAD90
  • MEMBER
  • 6 POSTS
Slowing lose prime while engine is running & re-gain prime at restart? i have a miss in cylinder 1 and have changed the spark plugs, wires, coil pack, and even the intake gasket and still has a miss. there is a ticking noise coming from around the cylinder 1 area.

this happened just all the sudden one day while driving the car and didnt seem gradual. i have checked all the fuel injectors and they all spray fuel equally. Since it has a ticking noise could that be a lifter losing prime and worn out? Could a lifter with no prime mess the lobe up on the cam?
Jul 24, 2012 at 6:21 PM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
yes to all. a lifter can collapse and pump up as well. if it is, i suggest replacing the lifter in question as it is causing an driveability issue.

Roy
Jul 24, 2012 at 10:45 PM
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