Q: Engine Shaking after low oil

asked by on

My truck had an oil leak and i drove it approx 2 miles before realizing that the oil was almost completely absent on the dipstick. i opend the hood and saw very light white smoke coming from engine. i shut the engine off and proceeded to to fill it with the oil i had available which was 10w30 ( my truck uses 5w30).

I overfilled the engine with oil, oil was way past the "full" mark on the dip stick but the Odd noise that the engine was making had stopped once the oil was in.

i proceed to drive the truck and noticed that is now " chugs" and the engine shakes. it has also seems to have loss some of its power.

i drove it a few more miles to the local quick lube and had the oil changed and the correct type and amount put in. this has not fixed the problem. no weird noises are notice but the vehicle has lossed some of its power and chugs along. what do i need to do??? could it be the Spark plugs??

My car has 220000 miles.
My car has a manual transmission.

It is very possible you have damaged the crankshaft and camshaft bearings. Ideally, the person changing the oil should have taken a sample of the oil that came out first to see if there are metal shavings in the oil. This can often reduce the power output of a motor by clogging the many small oiling passages in the motor creating excessive internal engine drag. Eventually this will lead to the need for a complete motor rebuild.

Overfilling the oil can foul the spark plugs, damage oxygen sensors and the catalytic converter. Since there aren’t any more noises, you may get lucky for a time with the motor. I would begin by pulling the spark plugs. If they have been oil-fouled, they will be wet or have black or white debris left over from burning excessive amounts of oil. It’s also possible the spark plugs will be washed clean from fuel that hasn’t burned because of misfiring from too much oil. The main thing to keep in mind is the plugs should be clean, dry and free of debris. If not, replace them if you’re not sure.

I would also take a look inside the air intake hose to see if oil was sucked into there via the positive crankcase ventilation (PCV) system. If this happened, it can contaminate the mass airflow sensor (MAF) which is the most important sensor for the powertrain control module (PCM) in making fuel ratio calculations. If it is oil soaked or has other debris in it, clean it gently with carburetor cleaner.

And still another possibility is the timing chain could have jumped a tooth or two. This will make a big difference if this has happened. The timing chain is tensioned by a hydraulic tensioner. When you lost oil pressure, that tensioner could have allowed the timing chain slacken and jump a tooth or more.

If you need assistance, a certified YourMechanic technician can come to your location to perform an inspection of your shaking engine and suggest any appropriate repairs for your vehicle.

Good luck!

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Engine Shaking after low oil

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

Get a quote

What others are asking

Q: Car does not accelerate above 2000 RPM

You either have a clogged fuel filter or low fuel pressure. Change the fuel filter and then check the pressure. If the problem continues then you may need to have a diagnosis done on the mass air flow sensor or...

Q: Helicoiled spark plug

A helicoil in a spark plug hole of the aluminum cylinder head was installed in the past due to a spark plug threads in the cylinder head came out during spark plug removal or the spark plug blew out of...

Q: ESP light stays on dash

Hi There, This is something that usually requires the steering angle sensor to be re-calibrated or replaced. I would suggest having a professional from YourMechanic come to your location to have this done. As you may know, the steering angle...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...