Hello guys,

About a month ago i changed the timing belts (A & B) of my 4d56T engine.

I checked the tension of timing belt A a while ago and deflection is approx 10 mm deflection. The manual says 5 mm max limit. As i depress the belt, the injection pump sprocket moves a little. The Tensioner is tight. By judging the starting, idling and acceleration characteristics of the engine, there is nothing wrong.

Still, i decided to retighten it. I did it by the book (manual).

As i checked the whole length of the belt for about 1/4 turn at a time, the belt becomes loose and then tight and then loose again and so on....IS THIS NORMAL?

But all 3 sprockets are still in time after i did more than 3 rotations by the crankshaft.

here are the steps that i did:
1. Align at TDC.
2. Loosen tensioner pivot side then slot side.
3. Rotate timing belt by 2 teeth of the camshaft.
4. Tighten tensioner slot side first then pivot side
5. Rotate ccw to TDC (2 teeth of camshaft back)

After the re-tensioning, the loose-then-tight-then-loose cycle is still back but the deflection is somehow decreased. any idea?