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engine knock

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Is it Safe to Drive With a Faulty Knock Sensor?
Symptoms of a bad or failing engine knock sensor include slow acceleration, reduced fuel economy, and the Check Engine Light turning on.
How Long Does an Automatic Timing Advance Unit Last?
The automatic timing advance unit is a component in vehicles with diesel engines. Of course gas and diesel engines both work on the internal combustion principle, but they are quite different,...
How Long Does an EGR Temperature Sensor Last?
Are you familiar with the EGR (exhaust gas recirculation) system in your car? If not, this is something all modern cars have. The purpose of this system is to greatly reduce...
How Long Does an EGR Control Solenoid Last?
In order to help reduce the amount of engine emissions cars have what is called an EGR system, which is an exhaust gas recirculation system. The way it works is that...
Symptoms of a Bad or Failing EVP Shut Off Solenoid
Common signs include poor cold start performance, the Check Engine Light coming on, and failing an emissions test.
What Does It Mean When an Engine "Knocks"?
If your engine is making a knocking noise it means there's a problem. The wrong fuel octane, carbon buildup, and bad spark plugs can cause knocking.
Symptoms of a Bad or Failing Automatic Timing Advance Unit
If your car experiences engine knock, sluggish performance, or excessive black smoke, you may need to replace your automatic timing advance unit.

Related questions

Question
Why does my Rolls Royce Ghost make a knocking noise when turning
Hello. Typically this noise will occur on full turn when you have the wrong size wheels on it or if it has a worn out ball joint. Most of the time this is caused by a ball joint. The vehicle...
Question
Knock Sensor + Wiring Harness installation cost? Will YourMechanic install parts if I provide them?
Hello. Yes we will install parts that are provided by you but doing so will void our warranty. You will also be charged for the technicians time if the part you provide does not fit properly. After we install the...
Question
engine full of gas
Hi there. The issue is the fuel pump relay is malfunctioning and causing the fuel pump to pump to much when it is not demanded. The knocking noise is the fuel going into the cylinders and hydrolocking the cylinders. I...
Question
Getting knocking sound when engine is idling from the floor front and side of the engine
Hello, thank you for writing in. The knocking is going to sound worse at idle because the number of combustion cycles happening is less than when you are accelerating or maintaining a higher RPM. With that being said, engine knock...
Question
Last night I was driving home and I heard this knocking noise, a minute later the noise went away and my check engine light came on.
Hi there. The noise you heard could have been the engine knocking due to a lack of engine oil. If the brake pedal is pressed and the oil light comes on, then the oil level could be low causing the...
Question
Cut out engine rattled then kept going as if never happened
On this engine you may have a problem with the valve seats in the engine coming loose or the variable valve system is not working as it should. If the check engine light is on then have system scanner to...
Question
I've got a knock it increases when I push on the gas should I just replace the engine?
Hello, and thank you for writing in. A knocking noise may be coming from the engine or the exhaust. Without pinpointing the exact location of the repair, it is very difficult to compare your options truthfully. An exhaust leak will...
Question
While I am driving my car makes a loud knocking sound. I t may be coming from the engine I'm not quite sure.
The noise will be identifiable, and the origin pinpointed, if you request a vehicle noise diagnostic. Ticking noises are usually due to valve train problems and, in turn those problems can be caused by low oil pressure. Knocking, if from...
Question
Engine light was on it started with a slight knock on a cold morning. It didn't stop and it got worse.
Hi there. Depending on the sound of the knocking noise and where the noise is coming from on the engine will determine if the engine needs replaced or not. If the noise is near the top of the engine, then...
Question
Why would my engine start knocking a few days after an oil change in my 2001 Volkswagen Beetle
Hi there. It sounds like you may have a serious issue starting with the engine. I would check the level of the oil first. If it is very low then that may be the cause of the noise. If the...
Question
Engine light lids
The knock sensor is located on top of the engine beneath the intake manifold which must be removed to gain access. With regard to diagnostic trouble code P0325 that code does not mean the knock sensor has failed. All that...
Question
Why does my 2005 Ford Mustang make a rattling and knocking noise
Hello. Most of the time this is caused by an issue with the timing chain or chain tensioners. The front of the engine would need to be disassembled in order to locate where the noise is coming from. Most of...
Question
Engine
Typically, if a short circuit occurred while replacing the battery, or the battery was installed (momentarily) with reverse polarity, or wires were left disconnected, all of the resulting electrical problems, that is the ones you are observing, would be present...
Question
There's like a ticking noise coming from my engine that only happens when I drive on a highway and when stopping at a red light.
The noise that you are hearing from the engine could be one or more lifters ticking. The lifters use oil from the engine to create a hydraulic pressure in them to keep them in contact with the valvetrain. If the...
Question
Today my car made a loud knocking noise and when I press on the gas pedal, the car doesn't accelerate right away but when it does it makes a knocking noise.
The noise that you are hearing could be one of the rod bearings are knocking in the engine or the flex plate could have a loose bolt making the torque converter bounce around. I recommend seeking out a professional, such...
Question
Why would my car have trouble getting to 60 mph and then it died. Now it makes a knocking noise 1999 Toyota Camry
Hello. There are a lot of things that can cause this. If vehicle was having trouble getting to that speed then it may be a transmission issue or it can be something like a catalytic converter that is failing. If...
Question
I have a 2015 ford fusion with 58000 miles on it and was driving on the highway and a awful loud ticking noise I drove it home
Since you were running your engine low on oil you may have damaged all the crankshaft and camshaft bearings along with piston and cylinder damage. You would need to have the vehicle inspected by a mechanic like one from YourMechanic...
Question
Oil was accidentally over filled.
Hi there. Wen the engine was overfilled by an additional quart of engine oil, then the engine was trying to lock up as the crankcase pressure was too high and the pistons are pressing against the oil. I recommend draining...
Question
Check engine light on, engine knocking, loss of power, and coolant leaking.
Hi there. Grab a flashlight and look under the vehicle for where the coolant leak is coming from. Either there is a gasket, hose, or freeze plug that is leaking causing the coolant to leak or the engine has cracked....
Question
2002 Nissan Sentra GXE is smoking out the tail pipe. I replace a knock sensor and the code for the knock sensor still pops up.
HI there. There are different symptoms that create smoke that emits from the tail pipe. Here is a description of the different smoke for you to check: Smoke Types Blue: Blue smoke is an indication that the engine...

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