Honda V6 VCM, again.

[JeffKeryk]

All this talk here over the VCM issues and the need for muzzlers. I have a 2008 VCMII with 126 k miles. Never had ANY issues with this car. Just routine maintenance and wear items replacement. Not a single repair. I keep it bc its so reliable and does not collect info on me. Looks great, super smooth and pulls strong. I service the PCV valve religiously and do 4-5k oci with Mobil 5-30 oil. Gets 28-30 mpg on the interstate. What more could one ask for?

Pull plug #3. I hope it's looking normal... Good luck!

 

[willbur]

thanks- it is

 

[willbur]

Pull plug #3. I hope it's looking normal... Good luck!

Its easy to pull the #3 plug- but why? I monitor my engine closely esp misfire counts.

 

[JeffKeryk]

Its easy to pull the #3 plug- but why? I monitor my engine closely esp misfire counts.

To read and compare plugs.

 

[willbur]

To read and compare plugs.

I ment to say "why #3 plug?"

 

[JeffKeryk]

I ment to say "why #3 plug?"

The back bank, cylinders 1, 2 and 3, are shut down by VCM. My understanding is, #3 can be the most affected. The Oddy I just worked on threw a P0303. But the back 3 were all fouled.

Good luck!

 

[willbur]

The back bank, cylinders 1, 2 and 3, are shut down by VCM. My understanding is, #3 can be the most affected. The Oddy I just worked on threw a P0303. But the back 3 were all fouled.

Good luck!

thanks Jeff- I pulled the correct #3 plug and #5 as comparison. The 3 plug had dry black deposits on tips and porcelain and not on the threads, while 5 was white. Both with sharp electrodes. The 3 plug was really loose- these engines have a rep for plug loosening. I believe those deposits are due to the loose plug(?not cleaning them off. No misfires. The first 70k miles all plugs were identical. These went in at 70k and the 3 plug has these deposits after 56k. But, I will order the VCM Tuner II just to be safe (if I can get one)

 

[JeffKeryk]

thanks Jeff- I pulled the correct #3 plug and #5 as comparison. The 3 plug had dry black deposits on tips and porcelain and not on the threads, while 5 was white. Both with sharp electrodes. The 3 plug was really loose- these engines have a rep for plug loosening. I believe those deposits are due to the loose plug(?not cleaning them off. No misfires. The first 70k miles all plugs were identical. These went in at 70k and the 3 plug has these deposits after 56k. But, I will order the VCM Tuner II just to be safe (if I can get one)

Smart move, IMO. Good luck.