Camshaft timing off by half a tooth after rotating engine
Aligning the camshaft and crankshaft marks perfectly is often undone when installing the tensioner and rotating the engine shifts the camshaft off by half a tooth. Over-tightening the crank bolt or catching the sprocket can also cause the crank and cam to jump timing. This leaves mechanics stuck, unsure if they must remove the harmonic balancer and belt to individually reset everything to top dead center.
What the numbers show
Counted from the threads quoted below. How we count
- People have been saying this in most months since September 2026.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
Found another way around this?
Share your steps and trade-offs so fellow engineers don't have to reinvent the wheel. No account required.
- 1Ordering an original OEM timing chain to compare with the old chain and check for stretchingDid this help you?
- 2Removing the timing belt and realigning the sprockets manually back to Top Dead Center.Did this help you?
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
“I tightened the crank bolt a little too tight which caused the crank sprocket to jump timing.”source ↗
“Well the belt must have caught the cam sprocket because now it is out of time as well.”source ↗
“So both the crank and cam have jumped timing and I'm unsure where to go from here.”source ↗
“Do I just remove the harmonic balancer and belt again, and then individually get both of them to TDC?”source ↗
“I can’t for the life figure out how to time the driver side intake camshaft chain exactly at the middle of the 2 marks”source ↗
“When i install it it i can allign all the 4 markings on all 4 cams and the crank shaft key timing line mark at the bottom perfectly. But when i put on the tensioner and rotate it 2 -8 times to check the marking again the driver side intak camshaft goes off by half a tooth”source ↗
Where this came up
People with this problem also raised
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- 10Camshaft timing looks off by a tooth but engine ran fine
- 8Why is my engine pulley wobbling and making a grinding noise?
- 7Why does my car still pull to the side after a wheel alignment?
- 13Steering wheel still off center after an alignment