Q: Engine in my truck is running rough, maybe oil problem?

asked by on October 29, 2015

Recently I have started hearing a knock in the engine of my 2008 Chevrolet Silverado. The truck is only at 50,000 miles so I didn’t expect to hear the engine run rough so soon. The truck goes through a lot of oil, but it usually runs fine after it gets more put in it. I replaced the oil when the knock started but it only lessened it, the knock is still present. Is this a bigger problem with the engine or should I try switching the kind of oil I am using?

Your problems are a common complaint voiced by other owners. You will need to have your engine checked for possible lifters that have collapsed and could damage the cam shaft in the engine. Some owners have changed oil types to a different synthetic brand and this has helped alleviate the conditions but did not fix problem. I would recommend contacting YourMechanic to get the noise verified and diagnosed to prevent possible damage or major engine failure. You said you use a lot of oil and have run low on oil before. You should check for possible piston rings causing this. Diagnosing the noise should be your top priority, and once the issue is identified, make the decision to overhaul or replace the engine with a remanufactured one. Proper diagnostics are the key to prevent engine damage.

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

What others are asking

My engine will not start. It will only make a clicking noise. 1999 Chevrolet Tahoe

Hello. If you are getting a clicking noise when trying to start the vehicle most of the time it is either the battery or starter. I usually start by load testing the battery. If the battery does not pass then...

Gas mixed in engine oil

With the gas getting into the oil, this vehicle needs repair before it is driven further, engine damage be a result if one continues to drive. The answer to this question could differ depending on how the gas was added...

My car shuts off while driving

Hello. Engine stalling can be caused by a wide variety of issues. Faults within the fuel, ignition, or engine management systems can all cause the vehicle to experience stalling. A few common causes of stalling are a bad idle air...

My 1991 Chevy Silverado hesitates at times and stumbles at idle when taking off from a start

If your fuel pressure is low or you have sticking clogged injectors you may get the hesitation and stumble on acceleration but run good at cruise. Also if you have some carbon build up on the valves and throttle body...

Front wheel jumps and pops loud when give it gas

If the problem did not start happening until you had the axle replaced, then you may have gotten a defective axle. Most replacement axles are new or remanufactured and either one can have a defective joint. I would have the...

My dealer told me that I should replace the oil pump along with the timing belt

Hi There, There are a number of differences between the oil pump and the water pump, however the main difference is that the water pump pumps the coolant through the motor and is driven by the timing belt and the...

Car will crank but no start... Fuel pump not coming on. New pump, relay, etc. Will start when hot wire runs from pump wires to bat

There are a couple of approaches to take here - either start from the battery and work "towards" the fuel pump, fuse box, ignition switch, fuel pump relay, and wiring connections in between. Or, as you have done, start at...

When braking the entire front end rattles really badly, is this a brake problem or something else?

Hello, thank you for writing in. Considering the issue only happens when braking and there are no other signs of a suspension or steering component failure, you will want to check the brakes and the tires. The front brakes should...

How do I use the cargo tie-down?

The cargo tie-down is located in the trunk, on the driver side. The tie-down is a small hook that protrudes from the side of the trunk. Hang light items on this hook to keep them from rolling or moving around...

Related articles

A Guide to Motor Oil Additives
Motor oil contains various additives to make it perform better. Conventional and synthetic oils both contain additives which help prevent engine wear.
How to Check Your Oil
Changing engine oil is an important part of basic car care. Check motor oil on the dipstick to know if you need to add oil to your engine.
How to Prevent Motor Oil Sludge
Regular oil changing in your car helps prevent sludge. Motor oil sludge can cause worse gas mileage, low oil pressure, and damage to engine parts.