Do you really need fuel system cleaning - Hyundai Forums : Hyundai Forum
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post #1 of 36 (permalink) Old 10-27-2017, 07:32 AM Thread Starter
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Do you really need fuel system cleaning

I recently took my 2015 Elantra for it's normal scheduled oil change, at it just turned over 60,000 miles. The guy at the shop wanted to up sell me on a few items, for which I didn't go for. He said at 60K they recommend their $180 fuel system service, he couldn't really tell me how it worked and so I was suspicious. While I don't believe the service would be detrimental to my engine, I also don't know what purpose this serves? It is my understanding the fuel filter system is in the gas tank and not something that is really serviceable (he told me it was in the tank, I just got the car a few months ago, haven't researched this yet). Any thoughts on what this service entails and is really necessary, would be appreciated.

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post #2 of 36 (permalink) Old 10-27-2017, 07:38 AM
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This is a big upsell service that is rarely needed as a preventative measure. The next time you see Techron concentrate on sale grab a few bottles and dump one in every 6 months.

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post #3 of 36 (permalink) Old 10-27-2017, 07:44 AM
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There are two possible services -

Typically the fuel system service that you mention basically involves putting something like BG44 in the tank and MAYBE cleaning the intake runners and throttle body with a spray cleaner. Not critical on a MPI engine like yours (unless it's a sport or GT), and not recommended unless the car idles poorly or has other issues. You were correct to pass.

Fuel induction service - this involves spraying a different BG product down the intake (fogging). This shouldn't be required on a MPI engine. SOME people recommend it on a GDI engine at 25K or 15K intervals, but there are DIY products by CRC and others for this, and I don't plan to do it on my car.

Basically, if your owner's manual doesn't list in the "Replace" column, you can skip it.
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post #4 of 36 (permalink) Old 10-27-2017, 08:52 AM
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Agree with both comments above, not needed and not in the owner's manual under any form of maintenance.
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post #5 of 36 (permalink) Old 10-27-2017, 10:47 AM
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Originally Posted by someguy View Post
This is a big upsell service that is rarely needed as a preventative measure. The next time you see Techron concentrate on sale grab a few bottles and dump one in every 6 months.
Advance Auto has it on sale now. BOGO free

Borrow money from pessimists -- they don't expect it back.
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post #6 of 36 (permalink) Old 10-28-2017, 12:55 AM
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The closest I get to that is running a bottle of injector cleaner through once every 15,000 miles or so, chased with a tank of ethanol-free gas and an oil change.

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post #7 of 36 (permalink) Old 10-28-2017, 02:39 AM
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depends if your engine is direct injection or port injection - i don't know which yours is, sorry

if direct injection, then everything added to the fuel is a waste of money

if port injection, then MAYBE worth a bottle of injector cleaner, once every year or two or when running rough
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post #8 of 36 (permalink) Old 10-29-2017, 05:39 PM Thread Starter
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Thanks to everyone for their responses. On the engine type question, how do I tell if my engine is direct or port injection? Is that listed on the engine sticker under the hood somewhere?
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post #9 of 36 (permalink) Old 10-29-2017, 06:13 PM
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UD/MD Elantra is plain old port inject...


The only fuel service I do to my own car is fresh load of fuel every 400 +/- mile at refuel..

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post #10 of 36 (permalink) Old 10-29-2017, 08:31 PM
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Techron bottle states to pour bottle in nearly empty tank......

Half empty tank, then fill tank okay or do I really need to wait until empty.???
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