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9-3 Sedan, Convertible ('04+)/Combi & 9-3X Tuning/Modifications - 2.8T V6 ONLY Covers Tuning & all Performance modifications specific to 2.8T V6 ONLY

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  #1  
Old 25th April 2019
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Default Fuel Injector Cleaning

I am thinking of doing a fuel injector cleaning on my 2.8. using the fuel injector canister method. Car has 82k and I noticed a bit of carbon on the piston heads when I changed the plugs. Looking at the 2.8 engine I don't see a fuel rail and/or schrader valve to hook up the canister. All I see is the fuel pressure sensor near the front passenger side of the engine. Checked the WIS and got nothing. Do these cars have a way to check fuel pressure that I am missing?

I came across this youtube video of a guy putting small amounts of GM x669 (Upper engine and fuel injector cleaner) via the inlet behind the sensor here.

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  #2  
Old 25th April 2019
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There is a sharper valve and its mentioned in the WIS when it talks about removing injectors. Its over toward the R side. The fuel rail is not visible until you remove the upper intake.


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Old 25th April 2019
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Thanks Laminator, just found the valve its literally right next to the sensor it was covered by the engine shroud.

Apparently GM isn't making X66P anymore, what are other members using to clean the upper engine and fuel injectors?

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Old 25th April 2019
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Called up AC/Delco and was was told the replacement number for X66p (88861803 Upper Engine and Fuel Injector Cleaner) is 10-3015. Not sure if it was reformulated or not and I am pretty sure it has to be used in a canister system.
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Old 26th April 2019
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If you can be without the car for a couple of days, youre better off sending out the injectors for ultrasonic cleaning on a flow bench. That will be superior to anything you can do on the car IMO.
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Old 28th April 2019
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i don't suspect so much that my injectors are dirty at the miles I'm at. When i changed the plugs i noticed some carbon on the pistons via my scope camera. So figured it was a good idea to look into doing a cleaning.
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