Hi Jerry,

Welcome to the club! Anybody who has never had this same problem has not worked much on cars! I say this because I have done the same thing several times.

Anyway, there are timing marks on the front crankshaft pulley and on the distributor. (see pictures)

You have to be sure that Number 1 piston is coming up on the compression stroke when you line up the mark on the front crank pulley with the indicator on the timing chain cover. To do this, remove the spark plug from #1cylinder and stick your finger in the hole. Have a helper "bump" the starter untill you feel the compression trying to push your finger out of the hole. Then use a wrench or socket on the crankshaft pulley bolts to get the marks lined up correctly.

If you look at the edge of your distributor with the cap removed, you will see two marks on the edge. One is an "8" and the other is a "6". when you drop the distributor into the hole, the distributor rotor needs to point directly at the "6" mark. (Since your Blazer is equipped with a 3.4L 6-Cyl. engine) (See Picture)

Sometimes the oil pump is not lined up properly to let the distributor drop all the way down in the correct position. There are two ways to handle this:

1. you can stick a LONG screwdriver down into the hole and try to rotate the oil pump into the correct position.

2. You can find the spot where the distributor WILL drop all the way down, then lift it back up and move it forward 1 tooth. the oil pump will also move 1 tooth and let the distributor drop again. Repeat this until the distributor drops into the proper position to get it lined up with the mark on the distributor.