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Old 03-22-2018, 08:33 PM
TxDmax88 TxDmax88 is offline
Join Date: Oct 2017
Location: Texas
Posts: 15
Default !! Stuck injector!! Any ideas

I have a stuck injector on #5, I’ve used a ton of penetrating oil and a 5lb slide hammer and still not budging. I can get a very small amount of wiggle out of it with a prybar but it still wouldn’t turn.

Any ideas how to get this PITA out???
2015 GMC Denali HD Dually
EFI Live
S&b intake
4" straight pipe
EGR and DPF Delete
AFE DFS 780 lift pump
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Old 03-22-2018, 08:59 PM
Ron Nielson Ron Nielson is offline
Join Date: Oct 2009
Location: Berryton, KS
Posts: 157

I remember seeing a tool that 'lifts' or prys the injector out of the bore. May have been a Harbor Freight tool. Google is your friend. Maybe Youtube, also.
Ron Nielson

2008 Chevy Silverado LT, SRW, Crew Cab, LB, LMM/Allison, Rear lowered 2": otherwise, fully stock at this point. Edge Insight CTS
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Old 03-22-2018, 09:25 PM
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gmduramax gmduramax is offline
Shits broke
Join Date: Jun 2008
Location: Nor cal
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Have fun

2008 GMC duramax crew cab short bed 2500.
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Old 03-22-2018, 10:07 PM
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snowman22 snowman22 is offline
Join Date: Jan 2018
Location: SoCal
Posts: 277

Get a can of TC-11 and hope and pray. If not, slide hammer may be your best bet.

2015.5 LML GMC Denali 3500 SRW 4wd CCLB 100k Miles
Mike L Trans, 4" FlowPro, MBRP Down Pipe, 30" FTE Resonator, S&B Intake, Twin Kennedy Pumps, Bilstein 5100, Kryptonite UCA and Tie Rods, EBC Sport Rotors Orange Pads, Edge CTS2
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Old 03-23-2018, 12:45 PM
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JoshH JoshH is offline
Daggum farm truck
Join Date: Feb 2007
Location: Texas!!!
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Slide hammer always works for me on stuck injectors. I made an adapter to allow me to attach my slide hammer to the fuel line fitting and make it so the slide is parallel (or close to it) to the injector body. I have yet to have one that wouldn't come out, but some of them are very stubborn and take a lot of hammering to get them out.
06 Silverado 4x4 CC/SB

06 Express 2500 Duramax Van "The Dumpster"

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Old 03-23-2018, 07:50 PM
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02greysixer 02greysixer is offline
Join Date: Jun 2011
Location: North Central FL
Posts: 1,820


If it's stuck due to carbon build up from a leaking tip washer you can use paint stripper or gasket remover to soften it up. Works well with the sprinter injectors and their "black death".

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