Skip the auto shop - Our mechanics make house calls

Q: I'm doing a timing belt on my car.

asked by on

I turn the crankshaft and the camshaft after the timing belt was off my understanding now you're not supposed to do that I'm afraid I might have done something to my valve wondering how would I know that

My car has 170000 miles.
My car has an automatic transmission.

A: Hi there. The 2.5L is identified as an inte...

Hi there. The 2.5L is identified as an interference engine. This means turning the crankshaft or camshaft(s), out of time, will bend cylinder head valves or possibly damage pistons, as the piston head comes in contact with the valve(s). Rotating by hand, a small amount, chances are all is good. Cranking the engine with the starter while the timing belt was off, chances are damage has occurred. The only way to identify the possible damage, without disassembly, would be to remove the spark plugs and look inside the cylinders with a reticulating bore scope. The other option, is to install the new timing belt and hope the engine starts with uniform compression. I recommend having your vehicle’s timing belt replacement be diagnosed and repaired by a certified technician, such as one from YourMechanic.

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

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: My 98'Saturn won't shift out of 2nd gear. Could it be a shift solenoid for 3rd & 4th?

Hi there. Are there any lights on; check engine, transmission, etc.? A code retrieval may be helpful if there are any codes stored. Codes/data could lead a qualified technician in the right direction of diagnosis as this could be a...

Q: P2098, P0153

Hello. The codes you are receiving have more to do with the oxygen sensor that is after the catalytic converter and not the one that is pre-cat. I usually install a scan tool and monitor the output of the secondary...

Q: the back passenger floor gets wet nothing else, what is the cause and what to fix?

Hello. Thank you for writing in. The windows have drain tubes and holes that take trapped water from the windows and doors and channels it where it can drain. These drains can become clogged over time with dirt and debris....

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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...