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2002 chevy Blazer 6cyl engine tapping Sign up here! Search this forum this category all forums for All words Any words Whole Phrase (search options) Auto Repair Home>> Automotive Repair>> Engine Troubleshooting Gunnysarge New User Feb 7, 2010, 12:04 PM Post #1 of 4 (3319 views) 2002 chevy Blazer 6cyl engine tapping Sign In Hey folks 2002 Chevy Blazer 93120 miles 6cyl. Auto trans She said it tapped when she 1st started it 2 weeks ago , then it went away .........went a few days and it stared again , I looked at it yesterday NO tap...... Oil pressure by dash was 25-30 at idle.. Today its tapping to beat the band... she uses 5w-30 Any help???? Thanks (This post was edited by Gunnysarge on Feb 7, 2010, 12:16 PM) nickwarner Veteran / Moderator Feb 7, 2010, 1:26 PM Post #2 of 4 (3311 views) Re: 2002 chevy Blazer 6cyl engine tapping Sign In Could be a lifter tick, could be a rod knock. Hard to tell without hearing it. Have you run it low on oil? Gunnysarge New User Feb 7, 2010, 1:33 PM Post #3 of 4 (3309 views) Re: 2002 chevy Blazer 6cyl engine tapping Sign In As far as I know never low on oil, Can the valves be adj. on this motor? Tom Greenleaf Ultimate Carjunky / Moderator Feb 7, 2010, 5:01 PM Post #4 of 4 (3302 views) Re: 2002 chevy Blazer 6cyl engine tapping Sign In Valve are near certainly self adjusting via hydraulic lifters. If you've been bad with oil changes you could have sticking lifters and sludge. 25 for oil pressure isn't so good IMO. I'd change the oil to high end oil - I like synthetics. I wouldn't use snake oils as there may be a mechanical problem and just new oil is detergent enough if old now. Noises are tough to tell without witnessing them and even then some are elusive, T   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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