new battery
Team Owner
Joined: Mar 2001
Posts: 54,124
Likes: 30
From: Cincinnati, Oh USA
Engines require spark and spark at the right time, fuel and air and in the right ratio in order to start and run. Use a timing light while someone cranks to see if you have spark and spark at the right time. Use a fuel pressure gauge on the shrader valve at the end of the right fuel rail to see if you have correct fuel pressure (36-42 psi). Then see if the pressure holds for a long time ign off. Rapid loss of fuel pressure can be caused by leaky injector/s or a defective check valve in the fuel pressure regulator. Use a noid light (available at parts stores), or an LED with a 680 ohm series resistor on an injector plug during cranking to see if the injectors are being pulsed. The LED must be connected with the correct polarity.
Last edited by jfb; Jun 28, 2009 at 10:58 PM.
Pro
Joined: May 2007
Posts: 659
Likes: 5
From: Holden, MO
Cruise-In IX Veteran
Try this out. Very good reading and explains the start up sequence. without info on car yr it is hard to help you out.
http://www.corvetteactioncenter.com/...4/016/article/
http://www.corvetteactioncenter.com/...4/016/article/
