I've got a random misfire, throwing codes 301 through 306. When I say random, I mean literally driving down the road, starts to misfire very noticeably only for a few minutes or less, then clears up and runs perfect. Debris in fuel rail? Water in fuel? Any insight? 08 2.7. Thanks!
Before doing anything else, check the compression. If one cylinder is low then that's your problem. Also, if you have a stethoscope then place it on each fuel injector body to see if you can hear them click.
The two channel Mac scope in this video is obsolete. Here is me using my Snap On verus edge:ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-8o9spX_w6Hk.html&ab_channel=RainCityWrench If you need a scanner for such things as pulling codes, tpms monitor, bidirectional controls, etc then an Autel maxisys ms906 or ms908 would be a good choice. I picked up both my units on ebay. www.ebay.com/itm/255006679812?epid=1968699755&hash=item3b5f952304:g:UxcAAOSwAKlgu7Z6 Or you could get a cheap pocket scanner: www.ebay.com/itm/264525058261?hash=item3d96ec10d5:g:~lwAAOSwnI9dxDfq
Not yet but just found out one of the other techs had a silverado with afm earlier this spring that had a noisy lifter and misfires. He replaced the lifters three separate times! It came back again, I suspect a manifold bleed, dirty screen, bad valve or something along those lines but i'm not involved with it thankfully.
@@jaywebb0113I do to, but this one was a real weird issue, didn't end up being the vlom at all, was another problem that when in v4 mode it was amplified