Q: Knocking from the motor

asked by on October 19, 2016

When I start my truck, there is a loud knock coming from the motor

My car has 182000 miles.
My car has an automatic transmission.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Key coming right out of ignition
If your key comes out of the ignition switch while the engine is on or in the on position, the ignition switch could be faulty and may require replacement. If not repaired, this issue could start to cause other electrical...
Overheating and leaking during driving
BMW had a TSB (technical service bulletin) out for a casting flaw where a leak could develop on the lower right side of the cylinder head. Good news though, that was on the M52TU engines and you have an M54...
Steering wheel resistance at 12 o'clock position
Hi there, thank you for writing about your 2013 Audi S5. Your vehicle has electrically-assisted steering, so your car's power steering module may be causing the steering problems. Audi has a software update for the power steering module - Ref:...
Check Engine Light is on. P0430 code.
The Check Engine Light on for code P0430 (https://www.yourmechanic.com/article/p0430-obd-ii-trouble-code-catalyst-system-efficiency-below-threshold-bank-2-by-spencer-clayton) is for the right (passenger side) O2 sensor indicating a bad catalyst on the passenger side or right side of the vehicle. Before replacing the catalyst (https://www.yourmechanic.com/services/catalytic-converter-replacement), check all the engine...
My engine has a rough idle. It spits, sputters, and stalls out. Could it be a bad injector?
Hi and thanks for contacting Your Mechanic. Yes an injector could cause an engine to spit and sputter or even stall out. Injectors (https://www.yourmechanic.com/services/fuel-injector-replacement) over time can become dirty from the contaminate in the fuel tank that when passed the...
An inconsistent starter motor that occasionally works perfectly now will not work. Then engine will not crank at all.
Hi there. It is possible for the starter to fail. But before replacing the starter, make sure that the battery cables are tight and clean. Then check the starter relay and make sure that the relay is clicking. If the...
Car starts up but stalls and the traction slip symbol comes on. What can cause this?
Hi there. Remove the battery cables and let the vehicle sit for about 30 minutes with no power. Then hook up the battery cables and turn on the key. Let the vehicle sit for about 1 minute. This will allow...
My car starts and then dies after a few seconds. It wont rev either when i press on the gas. What could the problem be?
Hi Litisha. Thanks for contacting us today. Usually this type of symptom is caused by a faulty fuel pump, fuel pump relay or a mass air flow sensor that is damaged. It's also common for a dirty fuel filter or...

Related articles

The Best Used Cars to Buy If You're Over 50
Shopping Shopping for a car when you’re over the age of 50 begins to shift a bit, as your priorities tend to change. Suddenly it’s not so much about what the vehicle looks like, or how much space it has...
The Best Used Cars to Buy If You're a Skier
When When summer ends, skiers start thinking about hitting the hills, and that means having to contend with winter driving conditions. Not just any vehicle is going to get the job done. We have evaluated several used ski-worthy vehicles, and...
How to Get Ford Dealership Certified
Ford car dealerships offer automotive technician jobs to mechanics who are certified through either the ASSET or the FACT program.