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Knocking in engine

Outside temp 27 degrees loud knock when started

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Make sure you have the proper oil weight incar for this time of year,lighter weight oil in winter months

Posted on Jan 16, 2013

  • sherib51
    sherib51 Jan 16, 2013

    5w30 was used

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Diesel engine..it sounds like a cold start engine all the time its running. loud knock. Company is saying its okay....it has to do with fuel system..can they be right


Spark knock is an indication of over advanced injection timing. It can result in piston damage. Check the ODBII scan for a coolant temp. sensor problem. It may be staying in open loop (ECU Cold Start mode). Presence of 180 degree coolant signal to ECU will trigger closed loop mode. (normal run mode, Lean fuel map).

May 19, 2017 | Cars & Trucks

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Why is my 2002 Mazda Tribute making a loud knocking noise when I start it


loud knock and for how long

is it a diesel or petrol

broken engine mount

loud tapping is tappets ..should go away once oil reaches top of motor
water pump or bearing something running off drive belts

if high milage engine
a loud knock at engine revolution or half revolution
big end bearings or
piston slap or gudgeon wear

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Oct 07, 2016 | Mazda Cars & Trucks

1 Answer

Oil light stays on when engine is started


If oil level is okay and the engine has pressure like no knocking the sending unit is bad. The dealer will charge about 85 to change it don't even try to do it yourself. It took a garage 6 hours to change it. It is in a bad spot and unless you want to rip the connector of it and hope it stays on the new one, it is easy to do . If you want it done right take it to the dealer
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Feb 01, 2014 | 2005 Chrysler Pacifica Touring

2 Answers

Engine knock when started


is this a diesel or a petrol engine version

Nov 21, 2013 | 2011 Mitsubishi Endeavor

2 Answers

I have a 1995 GMC sierra, 305/4l60e, I have been troubleshooting a running lean problem, finally got obd 1 software, all sensors are working in parameters, but I am losing my timing advance, my knock...


Your "knock sensor" kicks in??? That means there must be a knock detected and the engine is doing what it is supposed to do. How do you know your timing is 4-6 degrees at 60 mph?

Oct 30, 2013 | 1995 GMC Sierra C1500

2 Answers

In cold temp knock when enigine started


The oil level may be fine, but the oil may be too thick, or you could have a worn engine bearing or a weak oil pump.
The engine could have some sludge or dirt blocking a oil port.

Jan 16, 2013 | 2007 Toyota Corolla 1.6

2 Answers

My truck is making a loud knocking sound when I drive it


first you need to check the oil level (with engine off) if level is good than listen to engine knock with the hood open make sure it is coming from the engine and not the belt tensioner or something external on the engine,if nothing is found than engine will need to be repaired best thing is to bring it to a local shop for evaluation.best not to drive it much longer like this ,it could leave you stranded.

Nov 25, 2010 | 1994 Isuzu Trooper

2 Answers

Knocking vvt pulley?


Variable Valve Timing

Nov 09, 2009 | 2000 Volvo S40

1 Answer

Engine knocking


does it have a knock senor? fuel cut due to knocking may occur

Mar 04, 2009 | 1994 Toyota Corolla

1 Answer

1993 Toyota 4Runner-Knocking noise-front end-cold weather


This is Caused By the Grease in the Spindle Bearings Getting frozen. Get it Greased up really Well and you Might need to Repack the Bearings on this side to Stop this and Stop further Damage to the Spindle.

Jan 17, 2009 | 1993 Toyota 4Runner

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