How do you do the timing in a 1988 Buick Regal 28 v6?

Answer 1

You cant, it is computer controlled.

If the drive belt needs replacing it could also send the engine out of sync. Stand on the passengers side of the engine next to the wheel. Look down below the alternator & 6" towards the front, U'll see the belt tensioner. It's the slanted 'bar' with a pulley on each end. The lower pulley on the tensioner has 2 marks about an inch apart where the 2 halves of that pulley bolt together. On the other half of the same pulley u'll see 1 mark. U may need a flash light & some papertowels to clean off the marks. The single mark HAS TO BE IN BETWEEN the 2 marks on the opposite side. If the single mark is alot more to either of the 2 marks opposite it u need a new drive belt. To change the drive belt, put a 3/8 ratchet head into the squared hole in the upper pulley from where the 'marks' are. Then push the ratch handle towards the windshield & u'll see the drivebelt loosen. You can put a pipe on the ratch handle to extend it & give more leverage. Then put the new drivebelt on the same way u took the old 1 off.