Carolina Horsepower - View Single Post

PapaBear · 07-08-2011, 08:51 PM

So when I talked to him, he says there are only 280 misfires in the history. I unhooked battery the other day, and it has only been driven to "failure" three times since. 2 of them were when he was driving and I was riding shotgun with GM TECH 2 scanner in my lap. It was set on knock retard monitor, and it NEVER showed any knock retard while I had it. He had it recording, and says now that he reviewed the data, it was detecting knock on all cylinders, not just #8.

280 misfires in three 3 second goes at WOT. But if I monitor with aeroforce gauge (can monitor misfires on each cylinder individually), it will hit 150+ on #8 ONLY from 4000RPM through 1-2 shift. So I don't know what to think.

I told him if he felt so strongly about it, to make some clearance....dimple the primary a little bit or dent the fucking framerail, whatever, but that I wasn't going to pick the truck up, do it myself, and then have to bring it back when that wasn't the problem.

I don't know much about knock sensors and retard and all that, but with only 2 sensors, I find it hard to believe that the sensor can sense that only 1 cylinder is knocking b/c of a harmonic "noise/vibration" in the header. Just doesn't make sense. I have heard some valvetrain noise a couple of times, and told them that.

BUT, it seems that he is hell-bent on blaming it on this instead of checking other things first.

Then, he says the "ticking" noise I heard in the valvetrain was water dripping from A/C onto collector....WTF? I'm not a fucking idiot. I told this guy that I wasn't Joe Blow off the street with a TBSS, I have been wrenching on cars all my life, and know what valve train noise is. There was this little plastic hose that comes out of firewall that routes condensation away from exhaust.....well I found the piece of hose in my driveway. Water drips directly on collector, and guess what it sounds like.......water dripping on something hot, UNDER the truck.

I have a feeling that I will be getting a call on Monday saying that they clearanced the header and still have problem. When they tell me it's a valve spring or something like I thought all along, and told them 20 times, I am going to laugh at this guy.

So I told them I wanted Martin, Doug, or Deon, and instead got some young kid named Kelly. We'll see I guess.

07-08-2011, 08:51 PM	#10
PapaBear Senior Member Join Date: Aug 2010 Posts: 2,809	So when I talked to him, he says there are only 280 misfires in the history. I unhooked battery the other day, and it has only been driven to "failure" three times since. 2 of them were when he was driving and I was riding shotgun with GM TECH 2 scanner in my lap. It was set on knock retard monitor, and it NEVER showed any knock retard while I had it. He had it recording, and says now that he reviewed the data, it was detecting knock on all cylinders, not just #8. 280 misfires in three 3 second goes at WOT. But if I monitor with aeroforce gauge (can monitor misfires on each cylinder individually), it will hit 150+ on #8 ONLY from 4000RPM through 1-2 shift. So I don't know what to think. I told him if he felt so strongly about it, to make some clearance....dimple the primary a little bit or dent the fucking framerail, whatever, but that I wasn't going to pick the truck up, do it myself, and then have to bring it back when that wasn't the problem. I don't know much about knock sensors and retard and all that, but with only 2 sensors, I find it hard to believe that the sensor can sense that only 1 cylinder is knocking b/c of a harmonic "noise/vibration" in the header. Just doesn't make sense. I have heard some valvetrain noise a couple of times, and told them that. BUT, it seems that he is hell-bent on blaming it on this instead of checking other things first. Then, he says the "ticking" noise I heard in the valvetrain was water dripping from A/C onto collector....WTF? I'm not a fucking idiot. I told this guy that I wasn't Joe Blow off the street with a TBSS, I have been wrenching on cars all my life, and know what valve train noise is. There was this little plastic hose that comes out of firewall that routes condensation away from exhaust.....well I found the piece of hose in my driveway. Water drips directly on collector, and guess what it sounds like.......water dripping on something hot, UNDER the truck. I have a feeling that I will be getting a call on Monday saying that they clearanced the header and still have problem. When they tell me it's a valve spring or something like I thought all along, and told them 20 times, I am going to laugh at this guy. So I told them I wanted Martin, Doug, or Deon, and instead got some young kid named Kelly. We'll see I guess.