Misfire in cylinder 2

Asked by Mar 26, 2017 at 08:44 PM about the 2005 Honda Civic EX Special Edition

Question type: Maintenance & Repair

05 civic ex SE. Started with a
blown radiator. Oil and antifreeze
were mixing in reservoir due to a
blown head gasket.  Had the head
plained and replaced the head
gasket. Fought a horrible oil leak
caused by faulty aftermarket valve
cover seals which were changed
three times. Finally tried a used
valve cover with original seals and
that cured the leak.  I'm still
fighting a misfire.  Cylinder 2 is the
only code I'm getting.  Thought it
was a fouled spark plug since it
was filling with oil from the faulty
seals.  But I've changed the spark
plug and coil  pack from cylinder
two with cylinder 3 but I'm still
getting a misfire in cyl 2. I've also
replace the upstream o2.  Comp
tests at 150,90,120,150. Been told
that even with the low Comp on
cyl. 2 it should still fire. Anything
else i can check before im back to
square one checking the rings?

3 Answers

77,815

You need a minimum of 120 lbs for a cylinder to fire. 90 lbs is too low.

1 of 1 people found this helpful.
77,815

90 lbs, compression will throw the po302 code.

1 of 1 people found this helpful.

Thank you! I'll get a leak down test done and go from there.

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