Skip the auto shop - Our mechanics make house calls

Q: Car wont start

asked by on

It started making a weird loud knocking noise but it wasn't my rods some guy said it was the crankshaft pulley dampener? An then on day went out to start the car it will turn over just won't!

My car has 140 miles.
My car has an automatic transmission.

A: Hi there, thanks for writing in about your ...

Hi there, thanks for writing in about your 1990 Buick Century. There are multiple reasons why an engine could make a knocking sound, and just as many potential causes of why your Buick won't start. These potential causes include a loose cylinder head rocker arms, lack of lubrication getting to the cylinder heads, loose timing chain, and as "some guy" stated, a crankshaft pulley that is damaged. When the problem is first noticed, it can also mean that a problem with the timing chain or belt on your vehicle exists.

Since it's impossible for us to properly diagnose the exact cause remotely, the best option is to contact one of our local ASE certified mechanics who can diagnose the starting issue in person and recommend appropriate repairs.

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・Save up to 30%

Get a quote

What others are asking

Q: Car has an electrical problem

The turn signal switch may have failed and caused other issues as it is tied to many circuits. The multi-function switch must be inspected and the circuits it covers to make sure there were no shorts. If the wiper pump...

Q: Timing issue with vehicle.

Your vehicle is equipped with a timing chain that is driven by the engine. There are known issues with the timing chain, as well as the supporting components having the problems you are describing with your vehicle. A diagnosis and...

Q: Engine cranks but wont start.

From what you've described, it sounds like your timing belt teeth are broken off at the crank gear. You may have bent the valves now since the engine was turning and the cam was not. If this occurs it can...

Related articles

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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.