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Changed the spark plugs and now a loud knock, did nothing wrong but what happened.

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1 Answer

Engine knock


Did this happen after changing spark plugs ?
Incorrect spark plugs can cause this.
Maybe the timings are wrong the gasoline is expoding before the piston reaches the upper position.

Sep 05, 2014 | 2002 Mitsubishi Galant

1 Answer

Toyota estima engine knocking sound


Hi there,

Sounds like the engine timing is out - possibly due to incorrect spark plug gaps? If the plug gaps are correct, then there may be an issue with your Knock sensor.

In either case, your vehicle's on-board computer will have stored the appropriate fault codes, so have your codes read by your local Toyota dealership (this takes about 10mins to read your codes).

Once the codes are extracted, this will identify the culprit circuit.

Hope this helps..

Feb 21, 2013 | Cars & Trucks

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sounds like the plugs where to long and the pistons hit them when you turned the engine over

Apr 28, 2012 | Cars & Trucks

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Ignition coils how to replace and do all need to be changed


2006 engine knocking loud one mechanic says there is something wrong took it to kia dealer engine knocked then stopped now they the dealer says there is nothing wrong? What to do?!

Jan 13, 2011 | 2002 Kia Sedona

2 Answers

My car won't stay cranked after Iv'e changed my spark plugs. Did i knock anything loose?


REPLACE SPARK PLUG CABLES.IF YOU REPLACE SPARK PLUGS GOOD THING TO REPLACE PLUGS CABLE ALSO.

Nov 28, 2010 | 2006 Kia Optima

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

1 Answer

ENGINE KNOCK


It's related, The connecting rod pins may have gotten damaged and needs to be replaced. The knock you are getting sounds like the piston slap due to the connecting pins being damaged and the piston is moving around the cylinder walls and connecting rod. When the spark plugs wire was crossed the wrong spark plugs fired while the piston was still on it's way up the cylinder as to having it fire on the way down. This will cause stress to the valve's, piston, connecting pins, crank shaft, and main bearings. In short all the internal lower moving parts to an engine. Good Luck and have a compression test on all the cylinders and the one that is damaged will be the lowest compression reading.

Jan 05, 2010 | 2004 Buick Regal

1 Answer

Loud knocking oil in the spark plugs


Do a wet/dry compression test and determine if it's the piston rings or the valve seals.

Aug 12, 2009 | 1993 Honda Accord

2 Answers

My friend did a spark plu change and one of the spark plug was stuck and he took out the valve cover and the thing that goes under the valve con ver and replaced all spark plugs and put everthing back to...


I would take the valve cover back off...It really sounds like something is under there. I have seen people leave sockets in there before. Also take the plugs back out and see if you can look inside the cylinder for a piece of the old plug. Also try using a telescoping magnet avaliable from any parts store....

Jul 15, 2009 | 1994 Honda Accord

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