Q: Engine shakes upon startup.

asked by on

When I start the car, the engine is shaky and loud.

I can be quite alarming to start your car and have the engine start loudly shaking. There are a number of reasons why your Ford Focus is experiencing these symptoms. I have seen a number of shaky engines due to bad engine mounts. Engine mounts keep the engine firmly in place and reduce the vibrations in the car for a more comfortable ride. Another reason for shaky engines are engine misfires. If you are misfiring then your Focus may be due for a tune up. I have also seen shaky loud engines being caused by bad timing belts. When a timing belt is brittle and worn out, it will jump tooth, meaning it literally will grab the next tooth on the belt zipper. A timing belt jumping a tooth will change the timing of the engine and it will not run correctly. For all of these possibilities, it is best to enlist the help of a certified mechanic to inspect the shaking and get your Focus back to running great during start up.

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 shakes upon startup.

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: Engine smokes after an oil change

Yes, on a lot of vehicles it is normal. When you change your oil, a lot of times oil will drip off the oil filter when you take it off and get on the exhaust manifold and on the engine....

Q: Car shakes and the check engine light is on

Hello. If you have misfire codes on all of these cylinders, then the problem is much more in-depth. Most of the time when this occurs on one side of the engine, it is because the timing belt is worn out...

Q: Intermittent cylinder number four misfiring, car shakes as if it would stall

Misfiring can generally be either the fuel or it can be ignition. Now, you've changed the spark plugs. But if you have an older car, did you change spark plug coils? If not, change them. If it has coil on...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...