the motor turns over and is firing but will not start
Mar 14, 2008 at 10:54 PM
1990 Chevy Lumina need help
1990 CHEVROLET LUMINA
JASON1982
- MEMBER
- 8 POSTS
- FOLLOW
Advertisement
Have you checked to see if you are getting any fuel?
You can check to see if the fuel pump is running by turning the ignition to the on position and at the same time lean out the door or have someone remove the gas cap and listen. The fuel pump should run for about 3 seconds to pressurize the lines. If at first you do not hear it then try one more time. Just turn the ignition off and then repeat the above procedure. If the pump runs ( buzzing sound ) then you may need to change the fuel filter. It could be plugged. If the pump does not run then you need to check all fuses, relays and circuit breakers that pertain to the fuel pump before you actually change the pump. Pump is in the fuel tank. If you change it then also change the fuel filter and make sure the fuel tank is clean of sediment.
Be sure to do the following test!!
A quick check to see if you are not getting fuel to the injectors is to purchase a can of spray carburetor cleaner or starting fluid and spray a little into the throttle body and try to start the engine. If it fires and tries to start then fuel delivery is the problem.
You can check to see if the fuel pump is running by turning the ignition to the on position and at the same time lean out the door or have someone remove the gas cap and listen. The fuel pump should run for about 3 seconds to pressurize the lines. If at first you do not hear it then try one more time. Just turn the ignition off and then repeat the above procedure. If the pump runs ( buzzing sound ) then you may need to change the fuel filter. It could be plugged. If the pump does not run then you need to check all fuses, relays and circuit breakers that pertain to the fuel pump before you actually change the pump. Pump is in the fuel tank. If you change it then also change the fuel filter and make sure the fuel tank is clean of sediment.
Be sure to do the following test!!
A quick check to see if you are not getting fuel to the injectors is to purchase a can of spray carburetor cleaner or starting fluid and spray a little into the throttle body and try to start the engine. If it fires and tries to start then fuel delivery is the problem.
Mar 15, 2008 at 9:54 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.