Iam changing the timing belt need to know the marks to set it on on a 1990 ford mustang 4cyl

The 2.3 four has a plug in the middle top of the timing cover, the cover also has the gage where you set the spark timing right abovr the crank pulley. with the cover in plce and the plugg out the cam gear has a cut mark in it that needs to be lined up with the pointer that you can see thoght the plug hole in the cover. the crank pulley has a timing mark that needs to line up with the 0 spark timing mark. the oil pump distrubuter pulley looks just like the cam pulley and is turned to the same clock position as the cam pulley. To check that its right remove the disturbuter cap and the rotor should bepointing to where the # 1 plug wire hooks to the cap. It'll run with the cover off so start and see. Autozone and advance autoparts when they look up the car can print out a picture of the marks. Of course they can sell you the book that covers your car for around $12 that shows all the services to your car that your likly to be able to do your self and while reading in it you may find of things you haven't thought of that you should be doing to keep your car good

If you mark your timing gears, crankshaft & camshaft against the cyl. head & block with white paint before removing the old belt you really can't go wrong. After fitting the new belt rotate the engine by hand and re check your marks.