Fuel injector cleaning - Needed? best way to do it

[DFWGenny2015]

Took the car for it oil change and the dealer was insisting they do a fuel injector cleaning as Hyundai recommends it. Thanked them and said no. Does Hyundai do more than put a cleaner in the fuel tank and would you'll recommend I do it myself with a store bought cleaner? (what brand). I only use Costco gas for the car.

 

[EdP]

Took the car for it oil change and the dealer was insisting they do a fuel injector cleaning as Hyundai recommends it. Thanked them and said no. Does Hyundai do more than put a cleaner in the fuel tank and would you'll recommend I do it myself with a store bought cleaner? (what brand). I only use Costco gas for the car.

Ask him to show you in the manual where it says that. Many dealers try to sell extra services. Does it help? Probably not much. Does it hurt? Only your wallet.

 

[glennk]

If you're all ready using Top Tier gasoline (which you are), then your car is receiving more detergents than what the US government demands. Adding another additive (Techron) will most likely make no difference.

As Ed stated, extra services such as this only serve to pad dealer's bottom line. I took my Genesis in for it's 33750 mile oil change and the advisor came out stating I needed a brake fluid and radiator fluid flush. Both would have added $250 to my bill and could be done in less than 1 hour! How exciting! I turned both offers down and headed over to Pep Boys for a second opinion. Using test strips (tests for quality of fluid) and an electronic tester (checks for metal build-up in the fluid), they confirmed both fluids were just fine and to follow the manual.

 

[Suburbazine]

Decline. Your car uses direct injection. To "clean" a DI system involves the near equivalent of a top end rebuild. Anything else is putting chemicals in the gas tank, which if you're using premium fuel or base fuel with good additives, is already happening. When a DI system gets "dirty" you know immediately- there's a misfire.

 

[carguy75]

Took the car for it oil change and the dealer was insisting they do a fuel injector cleaning as Hyundai recommends it. Thanked them and said no. Does Hyundai do more than put a cleaner in the fuel tank and would you'll recommend I do it myself with a store bought cleaner? (what brand). I only use Costco gas for the car.

I would just use a good brand of gas like Shell that uses a very good detergent package in the gas or use a bottle of fuel treatment like Techron every month to clean the fuel injector nozzles.

I personally only use Shell V-power 93 octane and my 5.0 engine which runs very very smooth to point that you can not tell that it is running at idle. It did not run that smooth when I first bought it when it ran on whatever regular octane fuel the dealship used.

 

[Alfer]

My Hyundai dealer pushes BG additives HARD now. It's their little cash cow for the customers that they scare into thinking the "cleaners" are needed or the "warranty may be voided" or similar tactics. Hell, even the local Jiffy Lubes are doing it now.

Keep using Top Tier gas and you won't ever need "fuel additives".

 

[G-773998]

All dealers push the BG products.

 

[need4spd]

I am pretty sure the manual says to put cleaner in the tank every 7500 miles or if using top tier gas (costco gas is top tier) you don't need to do it.

on page F9 of my 2016 manual:

For customers who do not use TOP
Tier Detergent Gasoline regularly,
and have problems starting or the
engine does not run smoothly, additives
that you can buy separately
may be added to the gasoline. If TOP
TIER Detergent Gasoline is not available,
one bottle of additive added to
the fuel tank at every 7,500 miles or
every engine oil change is recommended.
Additives are available from
your authorized HYUNDAI dealer
along with information on how to use
them. Do not mix other additives.

Also on page 7-9 under normal maintenance:

Normal maintenance schedule
The following maintenance services must be performed to ensure good emission control and performance. Keep
receipts for all vehicle emission services to protect your warranty. Where both mileage and time are shown, the frequency
of service is determined by whichever occurs first.
*1 : If TOP TIER Detergent Gasoline is not available, one bottle of additive is recommended. Additives are available
from your authorized HYUNDAI dealer along with information on how to use them. Do not mix other additives.

 

[need4spd]

Ask him to show you in the manual where it says that. Many dealers try to sell extra services. Does it help? Probably not much. Does it hurt? Only your wallet.

@EdP see above, not an injector cleaner, but a bottle of additive.

 

[EdP]

@EdP see above, not an injector cleaner, but a bottle of additive.

They push it all. One dealer wanted to sell the $150 injection cleaning for my 2.0T. The additive is to keep the injectors clean. Would be cheaper, but unless you use cheap gas, not needed.

Either way, watch your wallet.

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[need4spd]

agreed!

 

[skipgen]

I just try for 1 good full throttle on ramp pull a couple of times a week...! Might not do much for the 5.0's injectors, but it makes me feel better!

 

[EdP]

I just try for 1 good full throttle on ramp pull a couple of times a week...! Might not do much for the 5.0's injectors, but it makes me feel better!

Years ago that was the cure to keep the heads from carboning up. Often you'd see a lot of black smoke out the exhaust when you did it. Kept plugs clean between the 10,000 mile changes too.

Does it help in new cars? Who cares, its fun to do.

 

[glennk]

Do they inject it into the air intake? I'd think that would be the only way to clean the MAF sensor and the intake valves. With this whole EGR / Direct Injection issue, a catch can seems to be the cheapest option to deal with coking. Sadly, my local dealer told me adding a catch can violates the powertrain warranty.

 

[skipgen]

Years ago that was the cure to keep the heads from carboning up. Often you'd see a lot of black smoke out the exhaust when you did it. Kept plugs clean between the 10,000 mile changes too.

Does it help in new cars? Who cares, its fun to do.

"Italian Tune Up".

 

[Suburbazine]

Do they inject it into the air intake? I'd think that would be the only way to clean the MAF sensor and the intake valves. With this whole EGR / Direct Injection issue, a catch can seems to be the cheapest option to deal with coking. Sadly, my local dealer told me adding a catch can violates the powertrain warranty.

No it doesn't. They'd have to provide written proof as to how the catch can caused engine damage.

 

[lobsenza]

I have a mechanic I have used for over 20 years. He tells me when he thinks I should perform a service and when I shouldn't. I have had him do a direct injection and air intake cleaning on my Genesis. He recommended it because of the type of the direct injection on the Genesis. He said the direct inection cleaning is harder than cleaning a port injection cleaning. I use top tier gas about 90% of the time. He charges less than 1/3 of what the dealership charges for the same service.

 

[socrbob]

I have a mechanic I have used for over 20 years. He tells me when he thinks I should perform a service and when I shouldn't. I have had him do a direct injection and air intake cleaning on my Genesis. He recommended it because of the type of the direct injection on the Genesis. He said the direct inection cleaning is harder than cleaning a port injection cleaning. I use top tier gas about 90% of the time. He charges less than 1/3 of what the dealership charges for the same service.

How do you get the automatic rear sunshade?

 

[Suburbazine]

How do you get the automatic rear sunshade?

He's got a series of trigger modules soldered to the switches

 

[socrbob]

He's got a series of trigger modules soldered to the switches

Thanks for the info. Is there any wiring diagram for this? Would like to do this to my 2016.