What did you do to your mk7 today?

[Acadia18]

Those look horribly rich too. No coloring at all on the threads.

Possible cause and solution?

They have about 6k miles on them. Haven't noticed any drivability issues, this was just noticed due to changing the plugs.

 

[Diggs24]

Do you sit and idle a lot? Short drives?

 

[Acadia18]

Do you sit and idle a lot? Short drives?

Sit and idle? Not really. Maybe every once in a while for a few minutes?

Short drives? Sometimes. Like today. Drove to T-Bell and home. Like a 3 mile round trip. Drove to my daughter's daycare and home. Like a 2 mile round trip.

 

[GTI Jake]

Nice, is that a bung for Wideband that I see ?

Just the normal downstream o2 right after the 4.5” 850hp rated 400 cell cat for a accurate reading (like OEM)

 

[snobrdrdan]

spare tire sub-(maybe helix) cause I don’t want to mess with taking off door panels and potentially adding rattles cause this thing it’s quiter and tighter fitting than the GTI and Tiguan ever were.

Don't do the Helix!
The GT has the 6 speaker system, and I added it to our R-line back in the day (same setup) and it didn't do much of anything. I tried every program too.

Now the Helix with the Passat (SE w/Tech) 8 Speaker system....the Helix sounded AMAZING with that system. Best "stereo" I ever had in a car. The only downside was that I had to leave the tool/jack kit laying in the trunk though, lol.

But again, don't waste your time/money on the Helix with your GT though.

There's this though:
https://www.qs-parts.com/store/p60/B7_Passat_US_Model__(2011_-_2015)_Under_Floor_sub_box.html

 

[Maiden69]

Wrapped this up, moved the BRZ out of the shop so it can go on my GTI for 3.5”Midpipe development next week.

View attachment 260755

Sound clips for sure, are you going to do just the 3.5" mid pipe into your 3" exhaust? I think this would be a good chance to try a 3.5" exhaust all the way to the stealth suitcase, since that one is a 3.5" inlet, bypassing the middle muffler. And probably a 3.5" stealth with a Vibrant 1133, since Borla don't have an XS that size.

Changed my plugs with the fresh set of Ruths, found some not good stuff

View attachment 260768

View attachment 260769


That was cylinder 4. Plug was very wet with oil. The top of the threads on 3 (not near the tip) was a little wet, but nothing like 4.

Checked compression again, all still ~145psi across the board, same as they were about 6 months ago.

What am I looking at here. PCV issue? I know it was replaced 25k miles ago, but these PCVs seem to be hit or miss.

Dr. @Diggs24, you're the plug expert, tell me what to do!

Valve cover seal could do the same thing. Surprisingly, VW didn't use a seal on this car, I guess because of all the issues with the seal in MKV and MKVI. They sell a kit or you could use some Permatex.

 

[swcrow]

VWcare last free service…50k service….yay

 

[GTI Jake]

Sound clips for sure, are you going to do just the 3.5" mid pipe into your 3" exhaust? I think this would be a good chance to try a 3.5" exhaust all the way to the stealth suitcase, since that one is a 3.5" inlet, bypassing the middle muffler. And probably a 3.5" stealth with a Vibrant 1133, since Borla don't have an XS that size.

This particular customer has a AWE Track, so it’ll be my 3.5” version of the AWE Fitment Midpipe.

With it being such a simple part I don’t think it’ll require any different as far as the weld fixture goes.

I will have to build the GTI specific lower downpipe piece to cover the difference between GTI & R routing, and that’ll conclude MQB parts development for me.

While it would be cool to offer a full 3.5” system, this is the last production weld fixture I plan to build for Volkswagen. I’ve already got way more invested into this platform than I’ll ever see back out if it.

 

[swcrow]

So threw in new plugs after 10k of being on E85…. Old plugs don’t look too shabby

 

[Diggs24]

@Acadia18

^Appropriate plug color

@swcrow

Keep an eye on #2. Lotta flakes.

 

[manu97]

@Acadia18

^Appropriate plug color

@swcrow

Keep an eye on #2. Lotta flakes.

View attachment 260794

For the uneducated in the crowd, what sorta flakes are those and why are they of concern? Metal flakes?

 

[Subliminal]

Isn't that a sign the plug is running too hot?

 

[swcrow]

@Acadia18

^Appropriate plug color

@swcrow

Keep an eye on #2. Lotta flakes.

View attachment 260794

School me please….. what is that an indicator or symptom of? I will change out after 5000 miles and reevaluate

 

[GTIfan99]

School me please….. what is that an indicator or symptom of? I will change out after 5000 miles and reevaluate

My understanding is that it's a sign of detonation. I'm no plug expert, so we'll see what Diggs says.

 

[Diggs24]

Yes, it's a sign of detonation. Could be running a tad lean in that cylinder. Could just be hotter than the others.

When you pull your plugs they should all look the same. When you pull plugs always lay them in order so you know which one went in which cylinder.