injectors with no return line?

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03-26-2009, 04:00 PM

teamblackandred

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injectors with no return line?

I thought if there was no return line this would mean that they are flex fuel is this true? I got some info from my other post but still not all question have been answerd. thanks justin

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03-26-2009, 04:15 PM

BlackGMC

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no return line means it is a returnless system, which is all 04+... some are flex and some are not... I believe the classic truck flex models can be identified by metal fuel rails, non-flex are plastic...