Q: crankshaft pulley bolt is bent and car will no longer start. prior to noticing car would make knocking sound

asked by on

my car was making a knocking noise and realized it was coming from crankshaft. noticed the bolt was loose and bent and now car won't start with bolt bent.

My car has 160605 miles.
My car has an automatic transmission.

My best guess is that the crankshaft bolt worked loose and as it became more and more loose the front pulley and maybe the timing belt sprocket started knocking around. Once the bolt became loose enough that the front sprocket was allowed to shift, the timing belt was no longer able to keep the camshaft turning and the car stopped running. Depending on a number of factors, there may have been some valve damage. I recommend you not try further to start the car until you can have it looked at by a technician from YourMechanic. They can come out to your home or office to check out your Camry and let you know what it will take to get going again.

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. crankshaft pulley bolt is bent and car will no longer start. prior to noticing car would make knocking sound

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: Should i worry about the head gasket and stripped head bolt problems that seem to affect more the 2002-03 Camrys ? Is it all Camrys? 2005 Toyota Camry

Hello - unfortunately,, if you have a 2002-2006 Camry (gen 5 engines), the answer is "YES, worry". That engine has the cylinder head bolts going into an aluminum block without thread reinforcement, and the head bolts strip in the block....

Q: Whining noise from the rear, very loud now

This is a problem with the rear differential making a growling noise as you increase speed. The issue was identified by Toyota and addressed in technical service bulletin TSB-0080-13, dated June 2013. The NHTSA has also published a safety bulletin...

Q: Car starts for 2 seconds then dies. However, sometimes it start runs and drive good.

Hi there. Check the fuel pump to the vehicle. A lot of Camry's have this issue and all of them had their fuel pump replaced. There is a short that appears in the fuel pump wiring in the fuel tank...

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.