On putting the distributor in and setting up timing: I put it on TDC #1 compression stroke, drop in the distributor and have the rotor pointed at #1 to fire. On cranking, it backfires through the intake. Obviously the valves are opening at the wrong time. What am I missing? Any help from fellow gearheads appreciated!
2007-10-06 05:21:07 · 2 answers · asked by Greg G 2 in Cars & Transportation ➔ Car Makes ➔ Chevrolet
I would first make sure I have the spark plug wires on in the proper firing order which is stamped onto the intake. Then be sure to have the firing order is the proper sequence for the way the distributor turns. If all that is good, you probably have the distributor timed to the motor 180 degrees out. When setting the motor up at #1 TDC, you can't just see the timing mark on the indicator at 0 degrees as that only means it could be #1 or its running mate. You have to either eye up the valves as you slowly turn the motor over or remove #1 plug and as it rolls up compression stroke you will either hear air coming out the hole or you will feel air coming out with your finger kinda plugging the hole. Then you know for sure the motor is on #1 TDC where you then set the distributor into place and get it running to do the final timing.
2007-10-06 07:44:20 · answer #1 · answered by Deano 7 · 0⤊ 1⤋
If you've had the timing chain off, your cam is proably set 180 degrees off. If that's your problem, take the chain back off, turn the cam gear exactly one rotation, and put it all back and try that.
2007-10-06 12:35:33 · answer #2 · answered by Evan 2 · 0⤊ 1⤋