I have tried to pick through all the searches and nothing exactly matches my issue.
2000 CCSB vortec 350
I have an occasional rough stumble when accelerating like it is running out of fuel. no pattern as to when it happens. 9mph on average. I have 62 psi when the key is bumped on, it goes down to 45 psi at times but generally hovers around 50psi.
compression is 180 on all cylinders, i am getting good spark at all cylinders. new fuel filter
i have an Autel MX808 scanner. these are the readings that i am clueless about:
Knock sensor: CONSTANT 4.86 or 4.85 volts
knock sensor activity: usually 0
Camshaft position sensor retard: 7 degrees at 1000 rpm. (i think this should be zero)
Fuel tank pressure: 14.01 mmHg on a scale of -32 to 10
i am thinking my evap system is shot and not venting and that my distributor was not installed/relearned correct when it was installed a few years ago by previous owner......?
2000 CCSB vortec 350
I have an occasional rough stumble when accelerating like it is running out of fuel. no pattern as to when it happens. 9mph on average. I have 62 psi when the key is bumped on, it goes down to 45 psi at times but generally hovers around 50psi.
compression is 180 on all cylinders, i am getting good spark at all cylinders. new fuel filter
i have an Autel MX808 scanner. these are the readings that i am clueless about:
Knock sensor: CONSTANT 4.86 or 4.85 volts
knock sensor activity: usually 0
Camshaft position sensor retard: 7 degrees at 1000 rpm. (i think this should be zero)
Fuel tank pressure: 14.01 mmHg on a scale of -32 to 10
i am thinking my evap system is shot and not venting and that my distributor was not installed/relearned correct when it was installed a few years ago by previous owner......?