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Old 10-11-2018, 11:41 AM   #1
Boog
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Good fi cleaner

Iíve got the 06 Gmc with 5.3 engine with 185,000 miles on it. Runs good but iím getting a rich idle code on right side. Iíve replaced the 02 sensor but still get the code. It goes and comes. Fuel pump was replaced 10,000 miles ago. I run a bottle of fi system cleaner through it and the code doesnt reappear for a month or so. I guess maybe it has a leaky injector or more. Who offers injector testing and cleaning services? Or is chevron with techron the best cleaner in a bottle you can use?
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Old 10-11-2018, 01:48 PM   #2
mikebte
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Re: Good fi cleaner

I have always run lucas injector cleaner and have not had any issues. But I try to put as little as possible in my 08 due to no fuel filter. May try pulling the plugs and making sure they are all good, the plugs last a long time if correct, but when they are done they are really done. Coils are also recommended to be replaced every 100K miles but I told the dealer last time I was in that they could run longer. At 140 now. You have me thinking maybe I should look into this.

LS injectors are also fairly cheap to replace, but it may be cheaper to clean. I have never had mine cleaned.
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Old 10-11-2018, 03:17 PM   #3
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Re: Good fi cleaner

have you checked for intake gasket/o-ring leaks ? the ls based engines are known for this a lot .

and DO NOT keep tossing parts at it with out a proper scanner read and diagnose of why its throwing a code . or you will be chasing your tail round and round .

lots of times its another part farther up thats not fully bad to set its own code yet that makes something down the line sense it and throw its code .

the price of new injectors for gas engines i would prob not bother with testing or reman of them . just get new and install if you find that one is leaking fuel past .
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Old 10-11-2018, 04:32 PM   #4
Boog
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Re: Good fi cleaner

[QUOTE I run a bottle of fi system cleaner through it and the code doesnt reappear for a month or so. [/QUOTE]

That doesnít exactly sound like a vacuum leak to me. Thanks though.
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Old 10-11-2018, 09:56 PM   #5
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Re: Good fi cleaner

I have used BG 44k with good results. It pricey. This link is for reference only. Most auto supply stores carry it.
Ron
https://www.amazon.com/BG-Products-F...Y8NCGA36B4A3AP
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Old 10-11-2018, 10:39 PM   #6
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Re: Good fi cleaner

And at about $140 each for new injectors they aren't cheap.

https://www.oreillyauto.com/shop/b/f...=Fuel+Injector

I believe I'll be using some more fuel system cleaners to try to straighten this thing out. Thanks fellas.
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Old 10-12-2018, 10:00 AM   #7
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Re: Good fi cleaner

Quote:
Originally Posted by Boog View Post
And at about $140 each for new injectors they aren't cheap.

https://www.oreillyauto.com/shop/b/f...=Fuel+Injector

I believe I'll be using some more fuel system cleaners to try to straighten this thing out. Thanks fellas.
ebay starting at 50ish a set of 8 and then going up from there . even lots of new take out sets .

rockauto starting at 15.00-78.00 each . cheepy to acdelco units . and there always posting 5-10% off promo codes on chat forums . heck that covers shipping most times .

ya got to shop around anymore buddy .
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Old 10-12-2018, 10:27 AM   #8
mikebte
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Re: Good fi cleaner

Quote:
Originally Posted by Boog View Post
And at about $140 each for new injectors they aren't cheap.

https://www.oreillyauto.com/shop/b/f...=Fuel+Injector

I believe I'll be using some more fuel system cleaners to try to straighten this thing out. Thanks fellas.
Ya, thatís my bad. I never use local auto parts stores. I got tired of over paying for the wrong part so my parts are all online.
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Old 10-12-2018, 02:37 PM   #9
DieselSJ
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Re: Good fi cleaner

First, understand what causes "rich" codes -

https://youtu.be/5WnM_NsOtd8

https://youtu.be/cARQ0jZZ4Qc

Then start looking at solutions.
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Old 10-13-2018, 09:34 AM   #10
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Re: Good fi cleaner

Dont think Fuel injector/System cleaner is gonna fix your isssue but I have been using Chevron Techron for nearly 30years in the service of vehicles. use the concentrate in the black bottle not the cheap silver bottle.
have seen Chevron fuel fix a number of strange running issues and strictly use Chevron fuel in all my vehicles and recommend to customers.
No I dont own any Chevron stock... gesss I should
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Old 10-13-2018, 02:43 PM   #11
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Re: Good fi cleaner

The Techron is the best I've ever used.
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