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engine knock

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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"?
You enjoy listening to the purr of the engine as you cruise along the highway. When you hear some strange sound coming from under your hood, you may panic. A knocking sound can be...
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

Misfire in 2 cylinders
Hi, thanks for writing in. Was there oil down in the spark plug wells also? If so, the rubber plug boots may still have enough oil on them to short to the cylinder head. It is also possible, with your...
My engine is vibrating and making a knocking sound at idle, which grows intensely when I accelerate but it all goes away at times
This seems to be a torque converter issue. The bolts are probably loose between the converter and the flex plate. To get to the torque converter bolts, you will need to remove the starter from the engine and then you...
Car is knocking when I hit the gas
Hello. Is the Check Engine Light on? A loud knocking noise coming from the engine is not typically a good sign. First, check to make sure all fluids are are the right level, especially the oil. Metal shavings on the...
what could make my car have a knocking noise?
A loud knock inside the engine could be caused by a broken piston, bent rod, or any of several other possible causes. Just about any loud knock that is definitely coming from inside the engine block is not good. It...
After I replaced my center bearing, a knocking sound from under the truck had occurred, and it has been slowly getting worse.
Hi, thanks for writing in. It sounds like you have a drive shaft or a half shaft issue. When you get under your car, try moving the axle back and forth. Any play could potentially be your sound. If you...
My car is making a knocking noise - 2003 Toyota Corolla
Hi there. From the description you have provided, the knocking noise in your engine is serious. The engine oil light coming on while driving down the highway, then quit running is equally concerning. Assuming you have had the engine's oil...
How difficult is it to replace a valve lifter and/or is it something worth taking to a mechanic?
Hello, thanks for writing in. Having lifters and valves replaced is best left to the professionals. Many times this can involve removing the cylinder head from the engine which will have an affect on the timing. Special procedures need to...
Car Knocking at 1600- 2100 RPM loaded condition
Most likely, the knocking under load you hear is worn connecting rod bearings. The top-end overhaul (including the valve job?) has increased cylinder pressure during the power stroke (assuming the valves were not sealing perfectly), exaggerating a "knock" that probably...
My car knocks - 2006 Toyota Yaris
Hello. In newer vehicles with electronic fuel injection and ignition systems, engine knocking due to bad fuel or spark is extremely rare. In most cases, if the knocking sound is consistent and increases in speed as the RPM increases, it's...
It knocks once after i start it up only one time and when i'm drivin a charm is played kind of like an alarm what should i do?
Hello there, a knocking sound can cause problems if left unresolved in your 2008 BMW 535xi. A knocking noise can be caused by a few different faults such as an engine mount, engine knock, failing alternator, or AC compressor. If...
Constant knocking sound from engine
Hello and thank you for contacting YourMechanic. The knocking sound is coming from the flex plate in the back of the engine. The flex plate is what drives the torque converter to the transmission. The flex plate is probably cracked...
Bad EGR code
Hello and thanks for your question. It seems that there may be excessive carbon build-up on the cylinders inside your engine. I recommend getting a carbon cleaner for your engine, like engine cleaner or sea foam. It is best to...
Car began knocking after an oil change, then exploded blowing 2 holes in the side and the oil pan off
It may be hard to figure out why the engine failed without knowing if the oil leaked out or was not filled up. I have seen situations where after performing an oil change the oil leaked out from an oil...
Knocking noise underneath car.
Hi, thanks for writing in. Diagnosing the exact source of a vibration or noise is typically only possible through an onsite inspection. However, after reading the symptoms you're describing, the two possible suspects may include the wheel bearings or the...
Knocking Sound Run Roughly Dark Transmission Fluid and Dark Engine Oil
I am not sure how many miles your transmission has on it. I would say replace the transmission fluid but if its been more that 150,000-200,000 miles you may have to have a rebuild done on your transmission if you...
Knocking noise
A handy and skilled technician can usually drill out and repair a broken bolt. but if the area has very limited access, some parts may need to be removed. If the knock is coming from the engine internals, there is...
Engine knock
Based on the sound heard in your video, I believe you have damaged some of the valve train parts. If this happened during the engine dying, it is very possible that something has broken on the inside of the engine....
Knocking from the motor
Hi. The usual cause of the loud knocking in these motors are one of two things (or both). The timing chain guides become loose or worn out and sometimes causes the engine to knock or tick when it is running....
I have a loss of power when acceleration the car does not drive pass 10 or 15mph I change the plugs and also change the fuel filte
This may be result of a failing or dirty mass airflow sensor. This is a unit that is responsible for regulating the air flow into the engine as it is mixed with fuel prior to being injected into the motor....
Engine rod knock
Hello and thank you for contacting YourMechanic. The oil to use is a thick 15/40W oil for diesels. This oil is thicker than normal engine oil and can keep an engine from knocking for a little while. If the engine...

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