We have a 1977 1/2 ton p/u. In line 6. We just changed the distributor cap and the rotor on the distributor and changed the spark plug wires and a coil. IT was getting an amber color spark but now a normal blue spark. It still wont start. Any suggestions. We thought we got it back in time.
2007-12-17 02:59:12 · 5 answers · asked by Anonymous in Cars & Transportation ➔ Car Makes ➔ Chevrolet
The first thing to check is the firing order, making sure that you have the wires installed correctly . You also want to be sure that you are getting fuel. If you have spark and fuel, the only thing left to check is compression.
Good luck!
2007-12-17 03:41:35 · answer #1 · answered by fire4511 7 · 2⤊ 0⤋
I'd check the timing first. With the spark plug removed from the #1 cylinder and the coil wire unplugged from the distributor cap and laid against a metal part of the engine have someone crank the truck while another person holds a finger over the spark plug hole. When the finger is pushed off the piston will be close to the top. When that happens look at the timing marks on the harmonic balancer and rotate the engine so the 0 lines up. This will put the engine at Top Dead Center on #1. With that all positioned the rotor should be pointing to the distributor terminal connected to the #1 spark plug wire. Check your firing order from there. Some engines are CW and some are CCW but that will get your firing order correct. If it still doesn't start then dribble about 2 plastic soda bottle capfulls of gas into the carb and crank it (with the spark plugs and wires hooked up). If it tries to start then you are not getting fuel. If it is still not trying to start make sure you got the coil wires hooked up correctly.
2007-12-17 03:55:57 · answer #2 · answered by bob 3 · 2⤊ 0⤋
In order for an engine to start you need fuel, air, compression and fire. If you have fire and the engine turns over you can tell you at least have some compression that you know of with out a gage. You should check your fuel and air. These are a big factor with an engine not starting.
2007-12-17 13:02:34 · answer #3 · answered by mittens 1 · 0⤊ 2⤋
check fuel pressure, and the compression of the cylinders
2007-12-17 03:26:07 · answer #4 · answered by Eric D 4 · 0⤊ 0⤋
Are you getting gas? Remember gas, fire & air thats all you need. Specially on an older chevy.
2007-12-17 03:05:28 · answer #5 · answered by loonatic72 6 · 2⤊ 0⤋