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Old 12-07-2016, 10:51 AM   #1
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Default Help 2006 A4 2.0T Quattro

Alright guys this is gonna be a tricky one
2006 A4 2.0T Quattro

Check engine light is on it read cylinder1 miss fire and all 4 cylinder missfire and would shake on idle almost dying out

So I've changed the plugs and coil packs also did the compression test on all 4 cylinder to find out there good 150 psi

So now I turn to fuel fuel injector number 1 since it's saying in the code miss fire cylinder 1 now as I'm taking everything off like the intake manifold and high pressure fuel pump regulator closer to the back of the motor I realize the high pressure fuel pump regulator that's bolted on to block with fuel line running into it is broken inside after I popped it off finally

So now I put the new injector in cylinder one and the new 570 doller high pressure fuel pump regulator the car ran great for about month and then the light came back for ****sakes now lol it's shaking like when this light first came on and I don't know where to go from here


Anyone have any idea like timing belt or something stupid before I burn the thing ????? Thanks
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Old 12-07-2016, 07:08 PM   #2
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Default Re: Help 2006 A4 2.0T Quattro

Just a remote thought, but why not replace the other three fuel injectors? My 2011 Q5 with the same engine had all its fuel injectors replaced under a recall.
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Old 12-07-2016, 08:19 PM   #3
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Default Re: Help 2006 A4 2.0T Quattro

Because there 210 dollers each 4 would be a 800 doller job with out even knowing if that's the problem or not
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