- Mar 29, 2008
- 8
- 0
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I'm working on my wifes 94 3.8. It has horrible miss (code P0302) and has fuel running out tailpipe and leaves a large white cloud of smoke behind. I've changed plugs, wires, and coil pack. Ive pulled the fuel rails and checked for leaking injectors , done compression test (between 155 and 165), checked for fuel in vacuum line to regulator. Checked fuel pressure its 32 when ruining but when you just turn the key it goes to 40 and then to 0 within a second.
I borrowed an injector pulsing tool from a buddy and he said that the fuel pressure should drop between 5 and 8 psi for 1 pulse. So I removed the upper intake and clamped the return line and unplugged all the injectors and turned the key on to build the pressure. It got to 36lbs and when I pulsed each injector individually and they all had a drop of between 10 and 12. Cylinders one thru three were all at 12 and four thru six were 10-11. Are they all bad??
I clamped the return and with the gauge hooked up the pressure dropped 12lbs in an hour and half just sitting. The mechanic I borrowed the pulsing tool from said none of that would concern him. He said he would be looking at the computer. Any other ideas out there??
I borrowed an injector pulsing tool from a buddy and he said that the fuel pressure should drop between 5 and 8 psi for 1 pulse. So I removed the upper intake and clamped the return line and unplugged all the injectors and turned the key on to build the pressure. It got to 36lbs and when I pulsed each injector individually and they all had a drop of between 10 and 12. Cylinders one thru three were all at 12 and four thru six were 10-11. Are they all bad??
I clamped the return and with the gauge hooked up the pressure dropped 12lbs in an hour and half just sitting. The mechanic I borrowed the pulsing tool from said none of that would concern him. He said he would be looking at the computer. Any other ideas out there??
