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1997 Chevy Truck NO COMPRESSION @ CYLINDERS 4, 6, 8

Tiny
JERRY ISLEY
  • MEMBER
  • 1997 CHEVROLET TRUCK
  • V8
  • 4WD
  • AUTOMATIC
  • 147,000 MILES
THE HEADS WERE REPLACED LAST MONTH. THERE WAS A MISS IN THE #1 CYLINDER, VALVES WERE READJUSTED WITH NO SUCESS. REPLACED ENGINE CONTROLL COMPUTER AND READJUSTED ALL THE VALVES, AT THIS POINT IT WOULD START BUT IT RAN EXTREAMLY AS IF IT WAS OUT OF TIME. CHECKED DIST. TO MAKE SURE IT WAS'NT OFF A TOOTH, STILL NO SUCESS. CHECKED COMPRESSION, HAVE 150 PSI @ 1, 3, 5, 7 145 PSI @ 2 CYLINDERS 4, 6, 8 ALL 0 PSI. COULD THIS BE FROM A TIMING CHAIN ISSUE? ANY HELP WOULD BE GREATLY APPRECIATED!
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Monday, June 29th, 2009 AT 12:29 AM

1 Reply

Tiny
DR LOOT
  • MECHANIC
  • 2,311 POSTS
I believe you have a flat camshaft, remove the vale covers turn the engine over and check how much movement you have on the rocker arms to those cylinders, compared to the other ones and check the push rods make sure they are not bent, also push down the rocker arms and make sure the lifters are pumped up, then let me know
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Friday, July 10th, 2009 AT 10:42 PM

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