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Random misfire p1399 and p301
11-30-2011, 07:22 PM
Post: #1
Random misfire p1399 and p301
So 97 prelude, 65k on the motor. New plugs, wires are in spec, new rotor cap, recent valve adjustment.

P1399 means multiple cylinder misfire, and is either bad EgR or needs valve adjustment.
P301 is cylinder 1 misfire.

I can not replace the rotor because that phillips screw is stripped. :frown:
I have the rotor I just need to be clever. But my misfire is only at idle, acceleration is normal and response. I just don't know if the EGR is truly the cause? I guess I don't understand how it would cause issues.

Ideas? Thank you for helping, I've read so many forums.
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