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I just put in seafoam in my gas tank, it is due for an oil change any time, so planning to hit it with seafoam via vacuum system too. Change oil, plugs, wires, and check cap/router.
For the noises, it is really weird, just barely moving like in a parking lot the engine makes some noises similar to a bad wheel bearing, any more gas, or less it don't do it. I suspect it is something with the ignition system not up to par. My dad is an ASE tech, so I could have him look into it some time when he has the time.
For the EGR system, I'm sure it will be carboned up, but if it kills my FE some, I would want to find out why, and be able to adjust the engine to be more efficient at cruise. Either way it needs to be cleaned. My Camry needs it too probably with 303k miles.
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