Q: Crankshaft will turn about 170 degrees then it hits something solid. What could it be

asked by on

The car started idling rough at start up about three days ago. Acted like bad gas. Then my wife tried to drive it yesterday and it died several times before leaving the driveway. I tried to start it and the motor turned over a couple of times and made a noise like it hit something solid. I pulled the timing covers and the belts and gears all " look" good. I turn the crank by hand and can only get 170 degree rotation in either direction before it stops against something solid. I drained the oil and pulled the pan. Oils clean and no detrimental sign in the pan. Recently the transmission was changed out. Do you think I have a internal problem with the motor or transmission ? I've read that the torque converter bolts can back out and catch the webbing on the block. How likely is that?

My car has 225000 miles.
My car has an automatic transmission.

The problem sounds like you have a piston hitting a valve. You will need to try and put the number one piston on top dead center on it compression stroke and check camshaft timing to see if it is in alignment. You may have jumped timing and bent a valve.

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 will turn about 170 degrees then it hits something solid. What could it be

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: Why am I getting a P0430 code in my 2002 Honda Accord

Hi there. Typically when you get this code it is due to a failing converter. You car has two of them, one for each side of the engine, and when they go bad anf no longer function right them this...

Q: I'm thinking of buying a 2007 lexus GS450H, its a hybrid with 101829 miles on it, do i have to worry about the batteries? and if s

Hello. First off, your vehicle is equipped with a timing belt. This should be changed soon if it has not already. As for the battery, I typically see these last until about 120,000-150,000 miles. If you need quotes for these,...

Q: Tires making noise and vibrating

It sounds like one of your wheels has come lose. I would check all the lug nuts and make sure none of them are loose. A licensed mechanic can come out and help you perform this and further inspect the...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...