Timing belt broke on a 90 model galant 2.0 need to know how to reset timing

Nissan markets its D22 and D40 pickup trucks in North America as the Frontier. A six-cylinder 3.3-liter engine with a double overhead camshaft is standard for the D22 models. The timing belt for this engine keeps the camshafts synchronized with the camshaft, enabling the engine to run smoothly. The timing belt has a limited lifetime, and typically requires replacement after 60,000 miles.----------------------------------------------------------------------------------------------
Original Launch CResetter

PProbably a bad starter gear teeth or a bad ring gear teeth on the flexplate/flywheel.

yes it is quite possible that valves are bent if the cam belt broke or teeth stripped off of old belt, which unfortuneately means removing the cylinder head and getting it repaired (valves replaced and possibly guides) see some of my other posts for cam belt timming marks locations etc...
depending what motor is in your vehicle twin cam or single?

and if its twin cam you usually need cam locking tool for cam gears.

take the head off bent valves thats for sure

Answer

If this is a single overhead cam, possibly A15SMS (engine type):

If you have everything stripped down and can see the crank shaft gear, you will notice an arrow stamped into one of the gear teeth.
this arrow must point towards the bottom, you will notice a mark (notch) cut into the housing, line the arrow on the gear with this notch.

remove the four 10mm bolts that secure the top cover of the timing belt, gently open the cover (not removing it) to see the Cam Gear. You will not be able to remove the cover because of the design.

The Cam Gear should have a line stamped into one of its teeth, this should be pointing up and towards the top. On the inner cover you will notice a notch in the casing, line both up together if it is not already.

You can check the following if unsure:
Remove # 1 spark plug (nearest the Cam Belt) and place a long screwdriver in the hole carefully to feel the piston is at the top, #2 and 3 will be down and the last one #4 at the distributor end will also be up.

Remove the rocker cover and you should see the Cam loabes on #1 piston free, (no pressure on the cam shaft) meaning the valves are closed.


tim

You can tell upon removing the distributor and checking the teeth. They are machined all alike, even without any rounded edges or very sharp corners

The pistons may be shot. If not this then the head geasket may have gone.

you will need to rull the timing cover off if belt has not spun or broke remove belt and install new one if belt has spun or broke you will need to line up timing marks on cams and crank and install belt

how to change crankshaft position sensor

Dear invisible148: I don't know which timing marks it is you are looking for, so I will supply you with several.
The timing marks on the crankshaft pulley which the belt ride on, are "NOTCHES" which have been made on to the top edge of the pulley inside shiv. They are in 5 degree increments. The timing cover has a fixed metal tab shaped like a pointer which sits relatively close to the top of the pulley.
The timing marks for the cam gears and the crank gear are small dots which were stamped on the very edge of the cam gears close to where the belt teeth mesh with the gear. The crank gear has a dot stamped on it, close to the edge of one of the teeth where it too meshes with the timing belt.
I hope I have answered your question.