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So I pulled the intake manifold off my 04 Forester xt and one of the bolts on the driver side had this whitish battery acid looking color. Does anybody know if this should tell me anything?

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    Definitely looks like some kind of liquid/water corrosion. Why are are you removing the intake - was there a leak? Where in the intake manifold was the bolt - was it near a water passage? – mike65535 Mar 30 at 22:45
  • Replace the bolt! – Moab Mar 31 at 19:03
  • It would make sense if its coolant. I'm swapping the Turbo, but also inspecting and looking for things just like this. I'm debating sending the fuel injectors to one of those refurb shops. – volare Apr 1 at 16:24
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It’s nothing to worry about probably the bolt near the crossover coolant in the intake.

  • Sounds about right – volare Apr 1 at 16:24

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