Is it Necessary to Clean Fuel Injectors? - GMC Acadia Forum: AcadiaForum.net
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post #1 of 47 (permalink) Old 03-30-2009, 02:36 PM Thread Starter
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Is it Necessary to Clean Fuel Injectors?

With 30,000 miles on my Acadia, the dealer told me that I needed to have the fuel injectors flushed for a cost of $150. When I asked him why this wasn't part of the recommended service as laid out in the Acadia's manual or by GM Goodwrench, he told me that this is an "over-and-above" service and that "all dealerships offer this".

I did a bit of Googling and found that the reason fuel injector cleaning is not recommended by the manufacturer is that it is not needed if the vehicle is operated under normal conditions, uses good fuel and is maintained on a regular basis.

Is the dealer trying to lift a few more bills from my wallet or is fuel injector cleaning a must?
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post #2 of 47 (permalink) Old 03-30-2009, 02:57 PM
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Re: Is it Necessary to Clean Fuel Injectors?

In my experience fuel injector cleaning should be done occasionally. It will keep the carbon and other buildup from building in the valves and throttle body and keep your emissions low. It also keeps your engine running smooth and keeps it as fuel effecient as it can be. Is it absolutely necessary, no but it is a good idea to do it ocassionally.

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post #3 of 47 (permalink) Old 03-30-2009, 04:08 PM
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Re: Is it Necessary to Clean Fuel Injectors?

Quote:
Originally Posted by Secam
Is the dealer trying to lift a few more bills from my wallet or is fuel injector cleaning a must?
Secam

If your Acadia performance & fuel mileage are unchanged, you have nothing to gain by cleaning the injectors. Few engines ever require this and it is not recommended by GM.

You might, however, consider a new more honest dealership.

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post #4 of 47 (permalink) Old 03-30-2009, 06:15 PM
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Re: Is it Necessary to Clean Fuel Injectors?

Quote:
Originally Posted by tekwarrior
Secam

If your Acadia performance & fuel mileage are unchanged, you have nothing to gain by cleaning the injectors.
I agree, most gas has additives to help keep everything clean.

The bottom line is:
If you don't have any drivability issues, you don't have injector issues.

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post #5 of 47 (permalink) Old 03-30-2009, 06:48 PM
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Re: Is it Necessary to Clean Fuel Injectors?

I always use Lucas Injector Cleaner at each oil change. My '95 Chevy Fullsize has almost 200K miles and still runs smooth as silk (nothing has ever been done to the throttle body or pump).

'08 SLT1 FWD in Liquid Silver, with Titanium leather<br /><br />As my Dad used to say, "You're never lost until you run out of gas."<br />When gas got to $4, I almost got lost.
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post #6 of 47 (permalink) Old 03-30-2009, 08:21 PM
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Re: Is it Necessary to Clean Fuel Injectors?

I used Techron injector cleaner around 15,000 to 20,000 on my vehicles as a preventative measure.I usually add it to the fuel tank before a long trip so it won't stay in the tank for extended periods of time. Use a quality fuel and it will help keep those injectors clean. GM along with others recommend a "Top Tier" gasoline with additives to prevent and remove deposits in the injectors and valves.
I had an intermittent miss in my old Bonneville's 3800 engine which turned out to be a bad injector. While troubleshooting this problem I found during an injector balance test the bad injector wasn't dropping as much pressure as the others. I tried cleaning with 3M injector cleaner(I have the special hookup for this) to see if it helped . The overall drop remained the same but all injector added another 5 kpa drop meaning the cleaning helped.
I hope I didn't confuse anyone. I would stay away from the dealer cleaning system unless you have a problem.

Bobby

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post #7 of 47 (permalink) Old 03-30-2009, 11:13 PM
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Re: Is it Necessary to Clean Fuel Injectors?

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post #8 of 47 (permalink) Old 03-31-2009, 12:17 AM
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Re: Is it Necessary to Clean Fuel Injectors?

Problem is you are paying $10.40 not counting tax and shipping to save about .5mpg (based on a 20mpg average). That means that in a 20 gallon tank you have saved 10 miles or one half gallon of gas. That one half gallon of gas cost you over $10. As everybody else has said, if your car ain't broke, ya don't need to fix it.

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post #9 of 47 (permalink) Old 03-31-2009, 08:08 AM
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Re: Is it Necessary to Clean Fuel Injectors?

For what it's worth, I put any quality fuel injector cleaner in my gas somewhere between 75,000 and 100,000 miles just as a maintenance item. It never hurts, minimizes any expense and keeps you from getting ripped-off from your dealer or "not-so-friendly" neighborhood mechanic.

(what's with all the advertising here!!!)

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post #10 of 47 (permalink) Old 03-31-2009, 10:05 AM
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Re: Is it Necessary to Clean Fuel Injectors?

I always add a FI cleaner to the tank every time I change the oil. Seems like very cheap insurance to me.
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