Italian tune up

Krusty · March 10, 2017

Which will help keep your injectors, pistons, cylinder walls, and exhaust values clean but will do nothing for intake valves.

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http://www.toptiergas.com/deposit-control/

4.3.1 Intake Valve Keep Clean Initial Performance Standard.

4.3.1.1 Test Method. Intake valve deposit (IVD) keep clean performance shall be demonstrated using ASTM D 6201, Standard Test Method for Dynamometer Evaluation of Unleaded Spark-Ignition Engine Fuel for Intake Valve Deposit Formation. Tests demonstrating base fuel minimum deposit level (4.3.1.2) and additive performance (4.3.1.3) shall be conducted using the same engine block and cylinder head. All results shall be derived from operationally valid tests in accordance with the test validation criteria of ASTM D 6201. IVD results shall be reported for individual valves and as an average of all valves.

Sierra706 · March 10, 2017

http://www.toptiergas.com/deposit-control/

That's true, for port injected or carbureted engines in which the detergent containing fuel passes over the intake valves. But not so in our direct injected motors.

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joshc64311 · March 10, 2017

I feel like some people dont understand the difference between port and direct injection.

joshc64311 · March 10, 2017

dorkweed · March 10, 2017

I feel like some people dont understand the difference between port and direct injection.

Even after the video below; MOST will STILL not know or understand the difference.

Krusty · March 10, 2017

Sounds like it may not be the sky is falling for most GDI engines.........

http://www.autoguide.com/auto-news/2015/01/is-carbon-buildup-a-problem-with-direct-injection-engines-.html

Additionally software plays a huge role. “What I think is most overlooked is the PCM calibration itself,” the engine-control computer.

“I believe it’s the absolute key to preventing the bulk of this buildup by making the air and fuel burn as completely and cleanly as possible.”

joshc64311 · March 10, 2017

Sounds like it may not be the sky is falling for most GDI engines.........

http://www.autoguide.com/auto-news/2015/01/is-carbon-buildup-a-problem-with-direct-injection-engines-.html

Im sure someone on this form could chime in on valve build up, Do a search on this form im pretty sure i read about it being problematic for some, but i could be wrong. So with the very poor tune these vehicles come from the factory with i highly doubt they have the proper ecm calibration. Were getting off topic.

truckguy82 · March 10, 2017

I'd like to see the science behind how letting the vehicle run at 3-4k rpm for 20 minutes builds up heat on the intake valves. You'd certainly be at a very low throttle position just cruising along.

They said 400 degrees celsius, that's seems really hot for some intake valves.

But I will say that should definitely work if you can get it there, I mean thats exactly what an oven does on self clean. It turns carbon deposits into dust, and they are usually at 400-500 degrees C

Thomcat · March 10, 2017

I never even heard of the Italian Tune Up until now. Interesting.

I'm Italian, my relatives are Italian, my friends are Italian.........I've heard plenty of stories about Italian "tune ups" and they have nothing to do with motor vehicles. And it might not be such a good idea to walk up to the wrong person and ask for one!

joshc64311 · March 10, 2017

I'm Italian, my relatives are Italian, my friends are Italian.........I've heard plenty of stories about Italian "tune ups" and they have nothing to do with motor vehicles. And it might not be such a good idea to walk up to the wrong person and ask for one!

Lol my wife is 1st gen off the boat Italian. I ask her about it and she got a good laugh.

joshc64311 · March 10, 2017

I'd like to see the science behind how letting the vehicle run at 3-4k rpm for 20 minutes builds up heat on the intake valves. You'd certainly be at a very low throttle position just cruising along.

They said 400 degrees celsius, that's seems really hot for some intake valves.

But I will say that should definitely work if you can get it there, I mean thats exactly what an oven does on self clean. It turns carbon deposits into dust, and they are usually at 400-500 degrees C

Yes if you can get them hot, its worth a try certainly cheeper than a manual cleanig

amxguy1970 · March 10, 2017

Sounds like it may not be the sky is falling for most GDI engines.........

http://www.autoguide.com/auto-news/2015/01/is-carbon-buildup-a-problem-with-direct-injection-engines-.html

This right here is spot on...

Im sure someone on this form could chime in on valve build up, Do a search on this form im pretty sure i read about it being problematic for some, but i could be wrong. So with the very poor tune these vehicles come from the factory with i highly doubt they have the proper ecm calibration. Were getting off topic.

There have not been any problems, a few people have shoved a camera down there or taken off the intake and seen a little build up and started making a mountain out of a mole hill (all catch can supporters) but it is minimal.

Truth is this is not a problem and those few that people heard about and get the scares from (the Audi's and VW's mainly) is partly due because those engines were not designed with DI but rather adapted to it.

Everything I have read from the designers and engineers/builders stress how important the calibration is for how long the valves are open, when they are fired and so forth are the biggest players in preventing build up. It isn't so much the air coming through the intake as the gasses and exhaust from the cylinder itself.

This has been known about for well over a decade and they design for this accordingly. They aren't going to put 100k warranties on the engines if they start running like crap and need a deep cleaning because of how they are designed at 60k miles, it would be too costly. The put millions of miles and hundreds of thousands of hours on the engines in testing before we even see them, don't you think the issues would have popped up?

These engines aren't tuned horribly from the factory, they just aren't tuned for all out performance. They are tuned for reliability, good power, mpg and NVH which they accomplish. And that tune needs to be balanced now with optimizing combustion chamber activity to minimize any possible build up. So to say these come with a poor tune up is just flat out wrong, it just isn't optimized for power (which is what probably 99% of people who get a tune go for) and crisp fast shifts as that reduces longevity which a manufacturer has to warranty. And the tune you are talking about could very easily make build up worse...

This is such an in depth subject with tons of on it. I can see how running the vehicle hard will help, even just going full throttle and allowing the added air and heat to remove some stuff can help. The idea of heating the valves that long that hot would be interesting, and I know these engines go through a test like that at full throttle for a long period of time so it certainly can't hurt.

Tyler