Misfire and no power....

[89Suburban]

I threw in the towel today guys, and took it to a local shop. Hopefully I might hear something tomorrow. Thanks for all the info!

 

[Servando]

Any luck?

 

[sgosa]

Not yet. The shop I took it to has not impressed me so far. He’s had it since last week and hasn’t really done anything. If he doesn’t at least have some sort of diagnosis by tomorrow afternoon I guess I’ll take it somewhere else.

 

[JetBlackNali]

Sounds like a lead is grounding out or a coil pack is cracked and grounding.

Had my son (14) help me do plugs and a set of leads a while back. Delco plugs and msd wires. Ran great. He was happy to help dad in the garage, and I was happy to share with him.
Leaving work one night fire the truck and it's chugging, popping, barely rev, cel is on. Frack. Throw the scanner on random misfire. Hmm. Pop the hood get out of truck it goes away. Wtf. Get back in starts again . Going crazy now. Is my seat hooked up to the ignition?

Get a buddy to sit in truck. Nothing. My truck hates me. Great. So with him sitting in truck and me under hood with a flashlight in my teeth, start feeling around . Nothing. So now I'm looking for a hammer. So buddy gets out and I hear it, Crack ,Crack ,Crack of the spark. Gotcha Fracker.

Turns out when I was getting out I was moving the steering wheel and the steering shaft bolt at the bottom of the column was digging into the #5 (2nd from back driver side) cylinder lead. Thank the good man above it was dark out and I could see the spark jump.

So my fix to get home was a piece of airline cut lengthwise and tie straps.

 

[Tonyrodz]

Sounds like a lead is grounding out or a coil pack is cracked and grounding.

Had my son (14) help me do plugs and a set of leads a while back. Delco plugs and msd wires. Ran great. He was happy to help dad in the garage, and I was happy to share with him.
Leaving work one night fire the truck and it's chugging, popping, barely rev, cel is on. Frack. Throw the scanner on random misfire. Hmm. Pop the hood get out of truck it goes away. Wtf. Get back in starts again . Going crazy now. Is my seat hooked up to the ignition?

Get a buddy to sit in truck. Nothing. My truck hates me. Great. So with him sitting in truck and me under hood with a flashlight in my teeth, start feeling around . Nothing. So now I'm looking for a hammer. So buddy gets out and I hear it, Crack ,Crack ,Crack of the spark. Gotcha Fracker.

Turns out when I was getting out I was moving the steering wheel and the steering shaft bolt at the bottom of the column was digging into the #5 (2nd from back driver side) cylinder lead. Thank the good man above it was dark out and I could see the spark jump.

So my fix to get home was a piece of airline cut lengthwise and tie straps.

View attachment 222394

I think that's a super common issue with aftermarket wires due to the longer length. I had to zip tie mine away from that shaft bolt too.

 

[sgosa]

Wow. That sounds like my luck man!
We found part of my issue. Cats are definitely clogged up. Once that’s resolved we’ll see if anything else is causing problems.

 

[Tonyrodz]

Wow. That sounds like my luck man!
We found part of my issue. Cats are definitely clogged up. Once that’s resolved we’ll see if anything else is causing problems.

Gonna cut them out or hollow them out?

 

[JetBlackNali]

I always use Walker hi flow universals. They are cheap and flow really well.

 

[Rocket Man]

Clogged cats did about the exact same thing to me, with those codes and more. I’m pretty sure that will fix your problem.

 

[sgosa]

Cutting them out for now to get going. I’d like to a new system this summer. But not quite ready yet.