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Old 09-11-2021, 05:11 PM   #13
LiqTenExp

 
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Drives: 2017 ZL1
Join Date: Jan 2017
Location: NJ
Posts: 926
Quote:
Originally Posted by SSUNDVL View Post
Yes if you are re-installing used ones, but they are preinstalled on new injectors so you don't need it. Also plenty of people remove/replace injectors without new seals especially if it has not been driven much since initial install but if reinstalling you prob should since you are dealing with fuel and a leak could be bad quick.
You are missing of the purpose of the tool completely.

That tool (245-4) does not install anything, it shapes/compresses the teflon seals AFTER installation or on brand new injectors prior to insertion into the heads.

Not shaping/compressing them prior to insertion with new seals can cause them to drag and get damaged causing air leaks. I would never reinstall the injectors w/o replacing the seals. On an GenV there is just way too much effort to get to them to warrant taking that chance if they leak.
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