06YarisRS
04-22-2020, 08:23 PM
I've had the car out a number of times already and it's working great. I have a few jobs to do to get it ready though.
Today, I changed out the plugs for a one step colder set. I also gapped the plugs to .028. I had gotten an intermittent misfire code (about two to three since I turbo'd the car) on cylinder 3. When I removed cylinder 3 plug, I noticed that it was a touch wet and smelled of fuel. Closer inspection of the plug reveals a slight difference in plug gap. I guess I missed that one. It couldn't have been out too much because I had so few misfires. I was happy to see that there was no evidence of detonation and that the plugs look pretty good - at least to my untrained eye.
Getting ready to do the job. Plugs and feeler gauge
https://i.imgur.com/ksJtaGn.jpg
When I had the wiper tray off, changing the plugs was a joke. A little more involved, requiring a universal joint to get the extension way down deep into the 2ZR's head.
https://i.imgur.com/Y7YOMtz.jpg
Torquing the plugs to 80 inch/pounds. I better verify that spec. Going from memory here.
https://i.imgur.com/euMbw4t.jpg
A little dielectric grease on the coil boots.
https://i.imgur.com/aP2xK1I.jpg
Gapping plug to 0.28
https://i.imgur.com/DtJVlkY.jpg
Plugs look pretty good, but feel free to make observations.
https://i.imgur.com/UT69Ts3.jpg
The second plug from the left was from cylinder 3. gap looks definitely wider to me. I understand that under boost, slight deviations in plug gap can cause misfires and unburnt fuel. The ground electrode looks a little off center too. I think it may have been damaged when I first gapped it.
https://i.imgur.com/kRYGoDD.jpg
Today, I changed out the plugs for a one step colder set. I also gapped the plugs to .028. I had gotten an intermittent misfire code (about two to three since I turbo'd the car) on cylinder 3. When I removed cylinder 3 plug, I noticed that it was a touch wet and smelled of fuel. Closer inspection of the plug reveals a slight difference in plug gap. I guess I missed that one. It couldn't have been out too much because I had so few misfires. I was happy to see that there was no evidence of detonation and that the plugs look pretty good - at least to my untrained eye.
Getting ready to do the job. Plugs and feeler gauge
https://i.imgur.com/ksJtaGn.jpg
When I had the wiper tray off, changing the plugs was a joke. A little more involved, requiring a universal joint to get the extension way down deep into the 2ZR's head.
https://i.imgur.com/Y7YOMtz.jpg
Torquing the plugs to 80 inch/pounds. I better verify that spec. Going from memory here.
https://i.imgur.com/euMbw4t.jpg
A little dielectric grease on the coil boots.
https://i.imgur.com/aP2xK1I.jpg
Gapping plug to 0.28
https://i.imgur.com/DtJVlkY.jpg
Plugs look pretty good, but feel free to make observations.
https://i.imgur.com/UT69Ts3.jpg
The second plug from the left was from cylinder 3. gap looks definitely wider to me. I understand that under boost, slight deviations in plug gap can cause misfires and unburnt fuel. The ground electrode looks a little off center too. I think it may have been damaged when I first gapped it.
https://i.imgur.com/kRYGoDD.jpg