rspec2014· Premium Member
Do not ever ever ever roll on the throttle at 45 MPH in 6th gear....Okay, good to know I need to run better octane from here on out. Thank you for that info.
I hooked up my scan tool this morning to watch the readings and record them, but for some reason the recording stopped only a few seconds after I started.
Upon glancing at the readings as I continued to work, the fuel pressure moved around, generally between 560-1500 psi, with no misfiring issues under light load acceleration, keeping revs under 3500. The one time it spiked up a higher is when I rolled on the throttle in 6th gear around 45mph. Under that load, the pressure spiked to around 1950-1960 psi, and the engine stuttered, but it didn't trip a permanent misfire code. Does this still sound like bad coils or possibly a fuel delivery issue?
Again, thanks in advance. If it would help, I can upload a picture of the old plugs I pulled out when I get home tonight, although I saw nothing on them that really showed anything (light brown color and even, non-excessive wear/gap erosion/no cracks in porcelain, etc... Let me know