Direct Injection Issues

[Mr Pig]

No, but in any case some of the carbon can be deposited as exhaust gases swirl around, I gather.

Sure, but it's going to help? Firing the crap out of the block into the intake never was a spiffing idea. It clats up everything. Letting it vent into the air is much better and who would know? Car would run fine and, if you did it discreetly, no MOT tester would spot it.

 

[cupra14]

I think if you do that you'll get fault codes (DTCs).

(Obviously it's illegal and unethical due to the emissions.)

A catch can should not cause codes, BTW.

 

[Mr Pig]

I think if you do that you'll get fault codes.

How? I doubt there is a sensor on that pipe. Even if there was, just vent after the sensor?

If every car vented these gasses to atmosphere.. heck even then I wouldn't lose sleep over it. One car? Give me a break.

 

[cupra14]

So, try it...

 

[Mr Pig]

So, try it...

Certainly going to look into it.

 

[Jazzjames]

Or just leave it as it is and get the intake valves walnut blasted every few years.

 

[Mr Pig]

Or just leave it as it is and get the intake valves walnut blasted every few years.

Has anyone actually had this done to one of these engines? Looks like you need to take quite a few bits off to get into the valves. Not sure I'd trust many garages to do that.

It's just a short 'L' shaped hose on top if the engine going from the rocker cover, if you still call it that, to the airbox. It would be very easy to block it off at the box and fit a small one-way valve.

 

[Mr Pig]

I spoke to a Seat dealership aftersales manager tonight. He's been in VW/Audi group dealers for years.

His take on this is that when direct injection was first introduced, valve fouling was common. He listed a few cars that had problems. He says that newer cars just don't seem to suffer from the same issues and he's never heard of a problem with the 1.4 TSI.