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Automotive Repair Car Troubleshooting Topics   Car Troubleshooting   Engine Troubleshooting   Engine Fault Codes   Electrical and Wiring   Transmission Problems Car Repair Topics   Car Making Noises   Car Stereo Repair   Heating or AC Issues   Motorcycles and ATVs   Tricks of the Trade   Truck Repair Advice Site Options:      Login   Sign up here! Latest Forum Post   Lukewarm Heat............ New antifreeze reverse flush heater core...   multiple warning lights 2013 GMC Terrain 130,000 miles 4 cylinde...   2014 Nissan Sentra Shaking Car recently started shaking when accele...   Buy Flualprazolam Powder Online Whatsapp: +1(424) 328-1086 N/A   1989 toyota pickup 3.0 crank no start I have a 1989 toyota pickup 3.0 crank no...   Strut spring orientation and strut mount tension nut 2017 Nissan rogue awd 2.5 L Put in Monro...   Transmission stuck in part, I have tried everything So I'm working on my elderly fathers 201...   2017 dodge journey LED headlights on/off randomly Year of vehicle 2017 Make of vehicle dod...   Kia Soul starter replacement issues! Okay so my car is a 2010 Kia soul 2.0 en...   Please Help - Knock sound & engine fail Hi all, Hoping to get some insight and ...

Engine knock in chevy 350 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 Darth-War New User Dec 28, 2007, 9:30 PM Post #1 of 4 (3813 views) Engine knock in chevy 350 Sign In i have a knock in my engine, but only at certain times. I can drive the truck for hours and the engine is nice and quiet. When i turn it off and then start it back up like 5min later it will start to knock. The knock lasts about 5min and then goes away. This is a 1990 full size blazer 350 TBI 4x4. Do i need to change the cam and lifters? Do i need to change valve springs? Help..... Tom Greenleaf Ultimate Carjunky / Moderator Dec 29, 2007, 12:20 AM Post #2 of 4 (3811 views) Re: Engine knock in chevy 350 Sign In Could be several things. Is this engine fairly free of sludge? Temp senstive noise as described could be low oil pressure or pump ability, or piston slap which does go away when warmed up. Get an oil pressure reading done right at the engine not just the gauge it has, T Double J Veteran / Moderator Jan 2, 2008, 4:26 PM Post #3 of 4 (3791 views) Re: Engine knock in chevy 350 Sign In HEY TOM this reminded me of the days when we had several tow trucks running 'round the clock.... went thru engines/clutches like you wouldn't believe...anyway we would get used engines most of the time....cuz drivers beat hell out of the trucks... most times engines came with 2 bbl carbs...i would change manifold and carb.... one time in particular,took off intake ,engine was clean as a whistle...started it up,knocked liked hell... sent it back ,got another one,same thing,clean,knocked like hell...... sent back third one was sludged up like the oil was never changed....didn't want to accept it but had to get the truck rollin',they didn't have another at the time...it was winter,busy time no doubt...let junk yard know...told them to get me another one ...put it in,started it up,guess what? quiet as a church mouse.....ran that sucka for a good while.. go figure......against everything we preach....oh well. way2old Veteran / Moderator Jan 2, 2008, 4:47 PM Post #4 of 4 (3788 views) Re: Engine knock in chevy 350 Sign In or piston slap which does go away when warmed up. T I gotta agree with this. Have run into a lot of them. Being way2old is why I need help from younger minds   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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