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Knocking in the top part of the engine - 2005 Cadillac CTS

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Maybe a ticking with sounds of air. that would be an exaust problem. spark plug wire disconnected

Posted on Sep 03, 2010

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Posted on Jan 02, 2017

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I have a 2001 Chevy Malibu automatic when it is in first and second gear it makes a knocking sound but when it shifts to third gear it stops I don't think it's a rod knocking because it isn't consent


More information is needed to help with this.

1. Is the knocking coming from the engine, the transmission or elsewhere?

2. If you believe it is from the engine, start the motor and put the auto in neutral and gradually depress the accelerator pedal to gently increase the engine speed for 2 minutes. If you can replicate the knocking noise then obviously it is engine.

3. If the knocking is from the engine check the engine oil level which you should be doing frequently anyhow to ensure you top it up and do not run the oil level low and destroy the motor. (Failure to have the engine oil changed at the required intervals can also result in excessive wear and damage to engine components.) If you do this check and find the oil level is very low then advise here when you repost your query with more information about the source of the knocking sound.

4. Also indicate in your post what grade (octane rating) of fuel you are running the engine on.

Apr 14, 2014 | Cars & Trucks

1 Answer

Engine knocking


Well a low tone knocking noise at startup is usually a worn engine bearing.
You should be able to have someone listen to the engine to tell if it is coming from the top or bottom.

Feb 01, 2014 | 2000 Dodge Grand Caravan

1 Answer

Knocking noise in engine of 2002 Nissan maxima


This is hard to say with hearing the noise but try to pin point the noise , is it coming from the top or bottom of the motor , the knocking noise could be a bearing in the lower motor or may be something else making it sound like a bearing,

Oct 05, 2012 | 2002 Nissan Maxima

1 Answer

Engine is making loud knocking noise what does this means


could be various things wrong, could be bottom end big end bearing. you need to establish where the knock is ( top end or bottom end ). if it is big end thats knocking then its an engine change ( saves messing about ) or top end ( camshaft ) then its a mornings job. hope this helps

Feb 18, 2012 | 1999 Ford Crown Victoria

1 Answer

Knocking or banging back side of engine some times top


Unfortunately, it sounds like you have a spun bearing. This is a severe engine problem that reqiures major engine work, if left unaddress it will destroy your engine.
Please note I underlined "sounds like", you need to have someone check the engine to make sure.

Jun 06, 2010 | 1995 Pontiac Grand Am

1 Answer

BMW 1993 320i deep high engine knocking problem.


If its knocking its cylinder related, if its tapping its valve top end related.

Apr 17, 2010 | 1993 BMW 3 Series

2 Answers

Knocking vvt pulley?


Variable Valve Timing

Nov 09, 2009 | 2000 Volvo S40

1 Answer

1996 bmw 323i m52b25 slight knocking noise from engine between


take rubber hose and place near ear use as stethoscope, pin point noise, and pull apart, till problem is located. buy manual

Sep 12, 2009 | 1994 BMW 3 Series

1 Answer

Knocking on top of motor its not smoking and has


The timing has probably gone out of adjustment. Do not drive the car until you have it checked out. You may or may not have a valve / piston clearance. Sometimes carbon build up can make a clearance engine no longer have it. I hope this is the case with your engine. It is possible that you are experiencing pre-detonation (knocking and pinging) This can be a timing issue as well. An auto mechanic or experienced friend should help you with this issue. Good luck with your repairs. Thank you for letting me serve you on Fixya.

Jul 26, 2009 | 2002 Subaru Legacy

2 Answers

Noise Top end of V6 Saab Engine


hey i dont know if u already solved ur problem but i was having the same problem with mine so i went and bought this solution called risoline, compresion repair. when i changed my oil i poured that stuff in first and then the oil. with in a day it stoped the clicking/knocking noise. hope this helps

May 18, 2009 | 1996 Saab 9000

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