Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
The green trace on the right is a fuel injector voltage waveform. The little bump near the end of the slope after the spike is the pintle movement.
Like Cheryl said, your pattern looks like an ignition waveform. I'm curious to know how you obtained that pattern from a fuel injector.
which vehicle did you get that injector pattern from ? Im use to seeing that pattern on other vehicles however this mazda6 fuel injector waveform is different. which is odd. even the waveform snapon is displaying is just like what you just posted in the green. its the fuel injector not a ignition coil. im backprobing the wires that the snap-on scanner is telling me to. in the video you could see at the top saying saying fuel injector channel 1 signal and black to ground .
engine is shaking. it bogs down . wide open throttle doesnt move the vehicle. feels like your pulling a boat going up a hill. you could hear the rpm pulling .
mode 6 only shows misfire date for each cylinder as passed. theres no live misfire counter. in park if you rev it and try to hold the rev at any rpm speed it has trouble holding it solid. try holding it at 2k all it does it drop to 1700 to 2000 to 1850 .
the throttle body does open at 100% as its electronic
What’s the o2 sensors do at wide open throttle?? They go rich? Have you checked exhaust back pressure? Can you post some live data videos? Oxygen sensor fuel trim data while bogging. Does it have variable valve timing? Maybe a solenoid is stuck
its a vvt. at wide open throttle it bank1 stays lean 0 open loop stuck no change. wide open throttle when the engine is cold is the same as if its in closed loop. when I checked backpressure its only showing 1psi to 1.4 psi , reving it up shows only 1.5psi
I think you have a restricted converter. Pull the o2 sensors and check the back pressure. I think you’ll find your issue. Please upload video of the tests
What bank was that test on with 1 psi only?? Bank 1? Bank 2? Sounds like he only checked 1 bank. Every time I see super rich and super lean it’s been a restriction. S
I'm seeing a fuel pressure problem here... idle pressure and WOT should not be the same. This would indicate a pressure regulator stuck shut. Idle pressure should be 10 or so lbs lower than WOT. Check the vacuum at the regulator. If no vacuum at idle, you have a leak. If vacuum, the regulator is stuck shut.
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