2005 mustang deluxe v6 making knocking noise

Asked by Sep 30, 2016 at 04:25 PM about the 2005 Ford Mustang V6 Deluxe

Question type: Maintenance & Repair

Came back from san jose in the morning and
everything was fine came home and parked with
the car still on and it started making that noise
amd it becames louder when i accelerate it has
138.000 miles and i just change all 6 spark plugs
and oil with the filter and the air filter

5 Answers

22,975

Does it sound like a upper engine knock from a rocker arm, valve or push rod? Check knock sensor. If the check engine light is on have it scanned. If it is upper engine knock I say because it gets loader when accelerating. I would listen to see if its one head or the other. Then pull that valve cover and check things out. If its ping from bad gas then you can put some fuel cleaner in that may help.

It has check engine but the code reader saids its a cylinder 5 but i already change all 6 and just put new spark plug wires aswell. But it keeps making the rattle noise. It comes from the driver seat i believe. Where all the spark wires connect near that area

22,975

I would pull that valve cover and look for loose rocker or bent push rod or both.

Can that cause one of the spark plugs to get burned on the side ?

22,975

Burned from arcing? I don't think so unless the heat built up. Burned from heat on the electrode tip that goes inside motor? Maybe. Are you using nitrous. Change them out if spark plugs are bad. Use some dielectric grease on boots.

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