02 6.6 LB7 sounds like tappet valves - Chevy and GMC Duramax Diesel Forum
01-04.5 LB7 Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission, Etc.

 
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post #1 of 3 (permalink) Old 01-25-2020, 06:35 PM Thread Starter
 
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02 6.6 LB7 sounds like tappet valves

Hi I’m new here. I have a 02 3500 with 6.6. While running it sounds like the old gas cars with low oil. Tappet valve sounds on pass side only. Just started. Oil pressure is from idle 40 sometimes drops to 20. On acceleration goes to 60. Any ideas what might be making that noise. I appreciate all your help
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post #2 of 3 (permalink) Old 01-25-2020, 07:53 PM
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Possible exhaust leak or up pipe leak.

2001 2500HD 4WD EXTENDED CAB LS,
S&B CAI, 4" STAINLESS STEEL EXHAUST, EFI LIVE FROM ATP TRUCKS, EDGE CTS, PPE BOOST VALVE, BANKS INTERCOOLER PIPE, AIR DOG II 165, REBUILT TRANNY WITH SUNCOAST KIT, TRANSGO SHIFTKIT AND BILLIT TORQUE CONVERTER, NEW UPGRADED TAILSHAFT, PUMP RUB FIX ON TRANSFER WITH NEW ALUMINUM TAIL SHAFT, NEW TOW MIRRORS, NEW GAGE HEAVY DUTY FRONT AND REAR BUMPERS, BEANS SUMP, FUMOTO VALVE, RARE PARTS TIE RODS WITH COGNITO PISK, MAD JACK FUEL FILTER ACCESS DOOR, STAINLESS STEEL SPEED BLEEDERS.
2011 GMC 3500HD DUALLY Welding Bed, 4WD CREW CAB, 4" downpipe back exhaust, def delete, egr delete, with new LB7 up pipe, pcv reroute, Fass 150, EFI live with DSP 5, HSP CAI. Air Lift Air bags. PPEI transmission tune.
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post #3 of 3 (permalink) Old 01-25-2020, 09:34 PM Thread Starter
 
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thanks for the info. I will check them both. I really appreciate it
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