2016 Hyundai Genesis What do you recommend for cleaning intake valves on GDI engines?
What do you recommend for cleaning intake valves on GDI engines?
What is your question?
I have a 2016 3.8 Genesis Coupe with a GDI engine. I've read that on a GDI engine, blowback crankcase fumes and contaminants recirculated back through the PCV valve into the intake manifold, tend to carbonize on intake valves because with GDI, fuel is injected directly into the combustion chamber, not into the intake port above the intake valves - with no gasoline running over the intake valves to keep them clean and act as a solvent on crankcase contaminants, GDI intake valves tend to accumulate serious carbon deposits. Millions of cars today have GDI engines.
What is the best approach:
1) Take it to a shop or dealer for a total system cleaning (around $220 or more) every 20K miles
2) Go to Valvoline or Jiffylube for a 'fuel inection system cleaning (about $90)
3) Buy off the shelf products and do it yourself
Lastly, Is there any way to inspect the intake valves for actual need, and to assess post-cleaning effectiveness, such as some kind of endoscopic inspection?
What makes this problem better or worse?
Car only has 22K miles; no symptoms yet
How long has your 2016 Hyundai Genesis had this problem?
RepairPal Certified shops can diagnose and repair your 2016 Hyundai Genesis. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
Regularly scheduled engine service using Hyundai recommended oil and filters as well as recommended fuel type will certainly help reduce or even eliminate crankcase borne deposits..
Yes, there are a lot of direct injection engines out there.
Good luck and happy motoring !
The carbon deposit issue on GDI engines was made popular by engineering flaws on Volkswagen and Audi engines. The injector was placed incorrectly within the cylinder which would in turn cause hydrocarbons to bake on the interior of the valves.
I haven’t heard of any complaints regarding the Genesis and carbon deposits yet. Also, I had a direct injection Mazda since 2007 with well over 100k miles, and I never had to do anything silly like seam foam the intakes or do an expensive inspection every 20,000 miles. It still ran as great as it did in 2007.
This is just a reflection of poor engineering and quality control for Volkswagen products. After all, almost all engines these days are direct injection. If carbon deposits were an issue, then why are all car manufacturers going in that direction?
Don’t worry, you’ll be fine. Don’t waste your money.
What you say would be reassuring, if I didn't also see this:
https://www.gencoupe.com/2-0t-discussion-2008-2012/77810-why-you-need-catch-can.html#post854493
Regularly scheduled engine service using Hyundai recommended oil and filters as well as recommended fuel type will certainly help reduce or even eliminate crankcase borne deposits.. Yes, there are a lot of direct injection engines out there. Good luck and happy motoring !