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  1. General Technical Chat
    Hello all, I have a 2007 ford focus ST manual with the 2.3 duratec in it. developed an unhealthy knock and lets just say old motor is out... However, the new 2.3l i bought came from a 2004 focus... was a junkyard car, but motor and paperwork of 75xxx miles for 300$ through my employer...
  2. Engine & Transmission Swap
    Hello all, I have a 2007 ford focus ST manual with the 2.3 duratec in it. developed an unhealthy knock and lets just say old motor is out... However, the new 2.3l i bought came from a 2004 focus... was a junkyard car, but motor and paperwork of 75xxx miles for 300$ through my employer...
  3. DURATEC Performance (2003-2007)
    Hello all, I have a 2007 ford focus ST manual with the 2.3 duratec in it. developed an unhealthy knock and lets just say old motor is out... However, the new 2.3l i bought came from a 2004 focus... was a junkyard car, but motor and paperwork of 75xxx miles for 300$ through my employer...
  4. MK1 Focus
    I have a 2003 Ford Focus SE 2.3L Wagon with 136k miles that shudders/struggles to start up when cold. Any ideas for what to look for? I have 4 new spark plugs New starter New valve gasket cover New fuel filter When I put the dash into test mode, fuel pressure was reading around 40 PSI so I...
  5. DURATEC Performance (2003-2007)
    I've been doing research on multiple forums and testing out theories myself but I've come to the conclusion that ford designed the duratec platform to be dependable on power output and pretty much regulates it's power through restrictions throughout the system. From the tip of stock snorkel...
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