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Knocking with cold motor

Knocking sound with cold motor start

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Sounds like a weak oil pump id change oiland run some lucas with the engine oil

Posted on Oct 16, 2009

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Posted on Jan 02, 2017

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I have a 1999 5.4 f150 4x4 loud knocking started on passanger side also guages all pinned and bounced around truck runs rough and stalls what could it be


it sounds like a critical internal failure is eminent . if the oil pressure is ok,it could be a bent or broken valve as the exhaust leak can let the valves cool to fast and warp. however it sounds more critical than that. do a compression test on that side and see if the #'s are consistent.

Feb 24, 2015 | Cars & Trucks

1 Answer

Motor noise


As long as it goes away within a few seconds don't worry about it. If it was a bearing problem it would knock every time it was started cold, not just now and then.

Apr 17, 2014 | 1994 Chevrolet Astro

2 Answers

Knock in cold motor


Not really an issue as I have already said in the other thread.

Apr 17, 2014 | 1994 Chevrolet Astro

1 Answer

2005 kia optima lx v6 engine started knocking on right side of motor heater wouldnt work earlier that morning


check for low coolant, look for coolant bubbling up in over flow bottle
if there is call a mechcanic

Mar 27, 2014 | 2005 Kia Optima

1 Answer

Noise startup


Have your valve lash adjusted. Overhead cams need the lash done every 25-30K otherwise after some time they make a loud ticking sound. If the motor makes a "Knocking" sound, it may be a lower end noise, and there is no adjustment for that.

Jun 17, 2013 | Hyundai Santa Fe Cars & Trucks

1 Answer

Motor knocks, sounds like lifter , at startup??


I bought a new silverado in 2001 and took it to 3 differnt chevy dealers for the same thing and got the same answer from all they claim its a cold start knock one said it had somthing to do with wrist pins they used and said it was normal and i told him that im not ASE certified but have built a few motors of my own and when it knocks that aint normal but he said it was nothing to worry about and so far mine has knocked since it was new with no problems yet.

Jul 03, 2011 | 2001 Chevrolet Silverado 1500

1 Answer

Light knocking at the first start each morning


sounds like a high mileage motor. worn lifters that take a few minutes to pump up. Might add a quart of marvel mystery oil. To improve cold start upper cylinder lubrication.

shack

May 17, 2009 | 2000 Chevrolet Blazer

2 Answers

'96 VW Golf GL with 2.0 motor. Cold start knock


It sounds like the hydraulic lifters are bleeding down after sitting for a while... there are ball checks which are supposed to prevent this... Try using a good engine flush (a product that frees sticky lifters) and replace the oil with a good synthetic... Hope this helps...;-)

Apr 27, 2009 | 1997 Volkswagen Golf

3 Answers

Knocking under valve cover on cold starts


Is there any smoke when you first start it? what is happening is the valve seals are probably worn and letting the oil seep past them. when your engine is first started it has no oil or very little oil at the top of the engine, thus causing the knocking noise. could be more but this is a most likely answer. oh and is you haven't changed your oil every 3,000 miles you had beeter start doing it.... answer knocking sounds usually come from bottom of engine try a better quality and correct viscosity oil

Nov 17, 2008 | Hyundai Motor 2002 Elantra

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