Skip the auto shop - Our mechanics make house calls

Q: Loud motorboat noise when starting

asked by on

My car has very loud motorboat noise when cranked. It has been maintained well with regular oil changes. I saw a spring-like coil on the ground under the engine, but I'm not sure it came from my car.

A: On many vehicles, the exhaust joints are he...

On many vehicles, the exhaust joints are held together with bolts that have a spring coil on them and allow for a little movement as the engine twists under load. There is a possibility this coil fell as the result of a broken bolt and the motor boat noise can be a large exhaust leak. I would recommend having an experienced technician look over the exhaust system to detect the cause of the noise.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: Rattling noise and wont go in gear

If you can put the transmission in any gear with the engine off easily but cannot get it in any gear when you start the car with the clutch in, then you have a clutch system problem. You will have...

Q: MASTER RELAY switch

Hello. There is a large (by comparison to other vehicle relays) relay under the dashboard next to where the dash curves under and meets where you pedals tie in. You will have to remove its mounting screws and unplug the...

Q: Why is the CVT transmission whining noise so loud when driving?

Hi there. From the description you have given, I'm lead to believe your vehicle has 65,000 miles and not 6,500 miles. Changing the CVT (continuously variable transmission) fluid more than likely will not quiet the transmission. It is very important...

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...
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...
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...