First pull the vacuum line to the regulator and check for the presence of fuel. If there's any, replace it.
Fuel pressure should be 41-47 psi.
There are MANY things that can cause a misfire, including but not limited to:
Bad computer, failing sensors, you forgot to put the dielectric grease around the insulators of the plugs when you replaced them, there's a bad ground to the coils, the coils wires, connectors are bad, the injectors are clogged/leaking, etc.
The thing to do is eliminate one thing at a time, beginning with the ignition system, then fuel, then sensors, then computer.
Monday, November 29th, 2010 AT 1:55 AM