Fueling & Injection - When should I replace stock injectors?
06-05-2009, 10:34 PM
My car has ~117K miles on it. At what point do I know if the stock fuel injectors need to be replaced? Thanks.
06-05-2009, 10:47 PM
when you add a cam and heads.
06-06-2009, 02:13 AM
410rwhp through an A4. Then you need some more flow!
06-06-2009, 05:29 AM
Your stock injectors are Bosch design III's, as long as theyre still flowing enough fuel to support your HP level, they will not go bad.
Sending them in for a full cleaning is a good idea tho.
06-07-2009, 10:43 AM
if you are concerned about how old they are w/ that much mileage and car burning down it would be caused by a leakie O-ring at base of injector.
if you ever smell fuel in the engine area it most likely will be a detererated O-ring.
06-07-2009, 12:15 PM
Thanks guys, I appreciate all the responses.
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