Results 1 to 8 of 8
Thread: Cold Knocking
11-02-2009, 07:44 AM #1
So, i just recently changed my oil for the winter season from amsoil 10w-30 to 5w-30, and now when i start my engine, i can hear a cold knock, it is most noticeable from the front drivers side wheel well, is this my exhaust manifold? Or could it be a even larger problem. I had a code thrown a couple months ago for my knock sensors, but i thought nothing of it because it turned off in 3 days. I still have the knock sensors and the intake gasket, could my knock sensors be the problem?
2002 Chevrolet Silverado 1500 z71 1985 Chevrolet Silverado k10 2006 Chevrolet Silverado 2500hd 6.6l LLY Duramax 6.5" BDS Suspension Lift Key'd to 9" Edelbrock Carb & Polished Intake Manifold & Valve Covers NAPC Race Transmission & NAPC Built Transfer Case EFI Live Comp Cam and Valvetrain Snow Performance Methanol Injection 35" Toyo Open Country Mud Terrain on 18" Ion Alloy 179's Headman Long Tube Headers and True Dual Exhaust FASS 150gph Titanium Series Pump AirAid Cold Air Intake with K&N Dry Filter & AirAid PowerAid Throttle Body Spacer 2" Suspension Lift 33x12.50r15 Tires PPE Tuner until i tune it with my EFI Live Pacesetter Long Tube Headers with Cats Gone True Dual Exhaust FlowPro 3.73 Gears Yukon Grizzly Locker with Mag-Hytec Cover & Traction Bars NGK Iridium Tips & MSD Ignition Plug Wires Baja Spare Tire Holder Leveling kit & 34.5" Nitto Grapplers 18" XD Rims Innovate LC-1 Wideband o2 Sensor x2 HID's all around LED taillights and 3rd brake light BDS Dual Steering Stabilizers Pioneer Double-DIN Touchscreen Navigation with Two 10" Subs under rear seat Electric Fan Autometer Pressure, Boost, and Pyro Gauges 4.56 Gears AFE Stage 2 Intake
11-02-2009, 08:48 AM #2Jim
2004 SILVERADO 2500HD LS
Pro Comp Leveling Kit
285-75-16 Cooper ST All Terrains
Pro Comp Programmer
Linux Bed Liner
1967 Landcruiser <350 Chevy>
1990 Geo Metro Convertible
2007 FJ Cruiser
11-02-2009, 07:08 PM #3
Well, from the passenger side, i think it's there too, but it's muffled from my cold air intake. I'm thinking it's a lifter, personally, a lot of the chevy trucks we've had, had the loose lifters.
11-04-2009, 02:12 AM #4
- Join Date
- Nov 2009
I've just visited this forum. Happy to get acquainted with you. Thanks.
Free Anime Episodes
Last edited by hcm2009; 11-04-2009 at 02:14 AM.
11-04-2009, 02:14 AM #5
it's probably piston slap. Mine does it too. Youtube the piston slap and see if that is what it sounds like. It doesn't harm it but if it gets worse it could.
11-04-2009, 09:42 AM #6
It only does it during the cold start, it doesn't do it when it's under load or during acceleration, it does, only until the engine is warm. And then it stops making the knocking.
11-09-2009, 07:55 AM #7
I've noticed, that the last start, it was getting louder, i'm starting to really get worried about this, i don't have another vehicle to get to work, and if something goes, like a piston ring, then i'm pooched.
11-30-2009, 07:32 PM #8
- Join Date
- Nov 2009
i had the same problem for years with my truck. it only stopped when i switched to castrol gtx high mileage. i do the same winter swap in the weight also and havent heard it since. hope this helps.
By capt sensible in forum Lifted & Offroad SuspensionReplies: 5Last Post: 02-12-2010, 05:06 PM
By Silverado1500 in forum GM PowertrainReplies: 7Last Post: 01-13-2010, 10:31 AM
By 2wheelin in forum Chevy Suburban Forum (GMC Yukon XL)Replies: 0Last Post: 12-03-2009, 09:33 AM
By jlbpa in forum GM PowertrainReplies: 10Last Post: 02-13-2009, 06:36 AM
By jwlurie in forum General Chevy & GM Tech QuestionsReplies: 1Last Post: 12-28-2008, 02:56 AM