More fun (new to me) Tundra Fix log.

Krown! It’s an oil based undercoating.

 

@shifty` Alrighty, I have another fun one here. So, swapped all 6 spark plugs and turned it on today... misfire cylinder 2. It was originally in cylinder 6 when I changed the plugs. I doubt I got the boots swapped around when I pulled the spark plugs out since theres really only ONE way they can go in.I might have swapped the coils around on the passenger side of the engine and if theres a fault in the female end of that coil MAYBE? Anyone have any idea what would cause a misfire to jump from cylinder 6 (back driver side plug up against the firewall) to cylinder 2 (up at the front of the engine on drivers side). I originally thought they were on the OTHER side of the engine and a bad coil pack would lead me to that. But now, I'm just more confused. I don't THINK I swapped the boots around when I pulled those plugs out. I purchased some NGK spark plug wires today ($30 on RockAuto.. I'm comfortable eating $30 I just won't buy lunch the next 3 days lol). But seriously this Misfire is bothering me!

 

Swap the coils, see if the misfire moves. If it does, you've got a bad coil.

 

So if memory serves me right looking at this diagram. I would need to take the coil in cylinder 1 (front of passenger side) and move it back to Cylinder 3. If the coil is bad, that would indicate a misfire on cylinder 4? If the mis doesn't move and it stays on Cylinder 2, then it's a bad wire (hopefully)

Just get really confused when talking about ignition COILS, versus COIL ON BOOT lol. I'm also going to clean out the MAF since it looks a little low at idle from live data.

 

You are generally getting my logic, yes. If you had a misfire on 6, and it jumped to 2 now, then take the coil feeding 2 and I'd actually swap it to the middle position. If you have a misfire on 4 after, then you know that (now middle position) coil is bad.

Poor mans troubleshooting is extremely effective in cases like this! Save yourself some $$ doing it this way, and you can afford to buy a proper Denso brand OEM coil to replace it, from a legit source (i.e. avoid scAmazon or fleaBay, buy it at Summit Racing or RockAuto instead).

I looked up the parts for what I believe is your truck at www.densoautoparts.com - verify the truck info is correct in the top left corner and ... there's your part numbers on the right. Hell, at $62 each, I'd just replace all three and not deal with this shit for another 15-20 years.

​