Good to see it comes down to a rotor. Offset is excellent. 0 +/- 2 degrees. If you do ever do need to check slack, cam and crank correlations walk side to side if there is slack. Great way to test loose chains. Also the gm missfire monitor usually is not very accurate. Ravifix has a vid using a math channel with the crank sensor and I believe a cam signal. It finds the fishbite misses that don't set a code also. Have not tried it yet but definitely planning to. Seemed a very simple test. Good luck and hope that got her running great!
@Backalleydiagnostics Thx for the info. I was gonna hook up the hscope and get a good cam/crank waveform to save. I'll have to see if there is any walk. I do get misfires on cyls 3&6 but it's random and they only count in the low single digits. I'll have to check them out. Maybe stick a bore scope in and check out the valves. I thought maybe injector issues since they are probably the originals. I don't hold fuel pressure on shutdown so it could be a sticking injector or bad pump. Cheers👍
@MarcBchannel Chevys are kind of random, I worked on one last year. Saw some smoke coming from the intake after smoke testing it, but even after a gasket, it had Randoms . Curious, did you look in global obd2 under mode 6 ? Sometimes it picks up a more accurate cylinder. If there is slack in the chain , the cpu picks up the cylinder firing afterwards. Mode 6 for Ford's definitely is more accurate. I don't believe I ever checked a Chevy.
![KSI - Dirty [Official Visualiser]](http://i.ytimg.com/vi/VoDh1h1dPUE/mqdefault.jpg)
Cool video 🤙🏻
Yep, my 2002 GMC Savana with a 5.7 used to eat the cap and rotors up all the time. I only used factory AC Delco too.
Good to see it comes down to a rotor. Offset is excellent. 0 +/- 2 degrees. If you do ever do need to check slack, cam and crank correlations walk side to side if there is slack. Great way to test loose chains. Also the gm missfire monitor usually is not very accurate. Ravifix has a vid using a math channel with the crank sensor and I believe a cam signal. It finds the fishbite misses that don't set a code also. Have not tried it yet but definitely planning to. Seemed a very simple test. Good luck and hope that got her running great!
@Backalleydiagnostics Thx for the info. I was gonna hook up the hscope and get a good cam/crank waveform to save. I'll have to see if there is any walk. I do get misfires on cyls 3&6 but it's random and they only count in the low single digits. I'll have to check them out. Maybe stick a bore scope in and check out the valves. I thought maybe injector issues since they are probably the originals. I don't hold fuel pressure on shutdown so it could be a sticking injector or bad pump. Cheers👍
@MarcBchannel Chevys are kind of random, I worked on one last year. Saw some smoke coming from the intake after smoke testing it, but even after a gasket, it had Randoms . Curious, did you look in global obd2 under mode 6 ? Sometimes it picks up a more accurate cylinder. If
there is slack in the chain , the cpu picks up the cylinder firing afterwards. Mode 6 for Ford's definitely is more accurate. I don't believe I ever checked a Chevy.
@Backalleydiagnostics No I haven't. I'll have to check it out👍