Do you feel low on power? When was the last time you replaced the fuel filter?

I had (still have) a power issue, along with poor mpg. dropping a bottle of redline fuel additive helped a lot.

Intermittent problems suck.. They get expensive too.

My last guess would be to change injectors.

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Eugene

10 E63 AMG
93 300te 4matic
07 BMW X3
14 Ford F-150 Fx2

I replaced the fuel filter about a year and a half ago, the old one appeared to be the original. When its working, it runs fine and gets good mpg, its got to be something electrical somewhere in the system since its intermittent but I feel like I've checked all the boxes. BTW that EHA valve worked out great - got it on this afternoon and it doesn't leak a drop, turns out the smaller O rings were right. Thanks!!

Edit: also, duty cycle today (while running ok) was fluctuating between 48-51% which is very good. Hmmm

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TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth