Q&A

 Technician

The fuel pressure needs checked,you might just check the filter first for restricted flow!If the filter is open,check the fuel pump pressure,at the fuel rail,with engine at idle..Then the pressure regulator diaphram may be cracked causing inadiquate clossing off to the return to the tank ,this provides the max of pressure and volume for the injectors .Look for fuel leaking at the fuel pressure regulator diaphram housing.pull off the vac.line and look for fuel at the end of the line and the nipple on the regulator housing.Loosen the gas cap and see if this has any effect on performance,it may be at fault,dont forget to retighten!!!

check out the idle control valve