Valve cleaning...

[Zpak]

$20 buy it now...accepted!

I wonder what that guy thinks is going on. Hahaha

 

[Lincoln SHO]

$20 buy it now...accepted!

I wonder what that guy thinks is going on. Hahaha

Probably something along the lines of "damn, I'm printing these things for pennies, and these suckers are paying $20!".

 

[Zpak]

Probably something along the lines of "damn, I'm printing these things for pennies, and these suckers are paying $20!".

You’re exactly right. I felt the same so tried to be cheep and started at $18. To which he countered $27. Oh well, I tried.

 

[Lincoln SHO]

At this rate, we shoulda offered to buy 10 for $100.

 

[Lincoln SHO]

Got my car back and tried to get some pictures with a borescope. I’m not very good at this. There’s some buildup, but overall pretty clean.

I’m sure I didn't get all 6 cylinders, but I’m much less worried about this now. At a minimum, I don't think it's blocking any airflow.

 

[4sfed]

Got my car back and tried to get some pictures with a borescope. I’m not very good at this. There’s some buildup, but overall pretty clean.

I’m sure I didn't get all 6 cylinders, but I’m much less worried about this now. At a minimum, I don't think it's blocking any airflow.

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I guess I'm used to those ports being shiney clean. But that doesn't look good to be.

So how bad is bad enough to cause performance or mileage issues?

Sent from my Pixel 4 XL using Tapatalk

 

[Lincoln SHO]

I guess I'm used to those ports being shiney clean. But that doesn't look good to be.

So how bad is bad enough to cause performance or mileage issues?

Sent from my Pixel 4 XL using Tapatalk

I’d like to know that too. I expected the carbon to be caked on all of them, and some of them don’t seem to have any buildup.

I’ll probably still have them cleaned. Not sure when, but I’ll try to get some before and after pictures.

 

[Zpak]

I guess I'm used to those ports being shiney clean. But that doesn't look good to be.

So how bad is bad enough to cause performance or mileage issues?

Sent from my Pixel 4 XL using Tapatalk

Unfortunately in DI engines his and my pics are just par for the course. Thus, why catch cans are so important to try to mitigate this as much as possible and despite what anyone says, why auxiliary port injection was added to ecoboosts.

 

[6500rpm]

You guys are awesome, no idea how badly I need it at this point, but that has to be the best $20 I've spent in a long time. I've seen newer DI engines that look way worse than the ones posted. Lee hit the nail on the head for me with the comment about the only way out is through the turbo's.
I've struggled with the concept of driveability issues in the DI engine, after all, it's just flowing forced induction air. I can remember in the old GM 454 engines that valve coking caused issues because the fuel hit the coked up valves and there was a sponging effect with the fuel, that's not the case with our DI's. On the other hand, I fully understand a chunk of that crap breaking off and being ingested by the turbo.

Whoever modeled that little device did us all a great favor.