Repeated cylinder 2 misfire

10

Asked by Oct 30, 2015 at 03:45 AM about the 2001 Honda Civic EX

Question type: General

I own a 2001 Honda Civic 4 cylinder EX and my cylinder #2 code keeps
repeatedly coming on. I have replaced the ignition coil and the spark plug
on there and it seems to run fine. After a month the same code will come
on (P0302) and it misfires badly. At that point I replace the spark plug again
and the code comes back on within a month.

This has happened about three times and I am not sure what it is. I have
noticed when the engine is cold, the RPMs will quickly rise above 1000 and
steadily go back down to 1000.

If it helps, I have recently put a cold air intake on there and this wasn't
happening before then.

4 Answers

37,955

Other causes would be a bad spark plug wire, and a dirty or dead fuel injector. Since this comes back after a period of time, I would venture to say a dirty injector. May have to replace, but first try a good fuel injection cleaner threw a tank of gas. Wouldn't hurt to replace the spark plug wires.

31,445

For the RPM issue check the cold air intake or leaks. Air leaking into the engine past the sensor is un-metered air which will cause idle issues. Regarding the #2 cylinder issue, does the spark plug look fairly clean when you replace it or is it oiled or sooted up?

10

there is no oil on the spark plug when I take it out. It just looks burned around the bottom.

1 out of 1 people think this is helpful.
10

also the injector going bad makes sense as the misfire gets worse on a new tank. I'll try that out as I have tried a fuel injector cleaner and the wire is a pigtail with an electrical plug on the end and not actual wires (simular to the plug on a sensor).

Your Answer

Add photo

Related Questions

Civic

Looking for a Used Civic in your area?

CarGurus has 64,641 nationwide Civic listings starting at $1,195.

ZIP:

Search Honda Civic Questions

Honda Civic Experts

#1 Takoda Fraser
Takoda Fraser
Reputation 940
#2 Jonathan Ford
Jonathan Ford
Reputation 920
#3 Tom Demyan
Tom Demyan
Reputation 860
View All

Related Models For Sale

Used Honda Accord
1,165 Great Deals out of 77,422 listings starting at $969
Used Honda Civic Coupe
319 Great Deals out of 16,946 listings starting at $999
Used Toyota Corolla
1,308 Great Deals out of 67,496 listings starting at $1,399
Used Toyota Camry
1,439 Great Deals out of 99,762 listings starting at $700
Used Honda CR-V
1,247 Great Deals out of 74,493 listings starting at $1,999
Used Nissan Altima
1,092 Great Deals out of 85,233 listings starting at $695
Used Hyundai Elantra
885 Great Deals out of 52,798 listings starting at $1,799
Used Honda Accord Coupe
248 Great Deals out of 11,564 listings starting at $1,350
Used Ford Focus
1,220 Great Deals out of 58,730 listings starting at $1,395
Used BMW 3 Series
1,769 Great Deals out of 40,801 listings starting at $1,250
Used Ford Mustang
680 Great Deals out of 38,190 listings starting at $1,750
Used Nissan Sentra
748 Great Deals out of 52,503 listings starting at $1,800
Used Acura TL
328 Great Deals out of 7,075 listings starting at $2,000

Used Cars For Sale

2017 Honda Civic EX For Sale
5,869 listings starting at $19,299
2016 Honda Civic EX For Sale
11 Great Deals out of 2,945 listings starting at $16,450
2015 Honda Civic EX For Sale
39 Great Deals out of 591 listings starting at $13,555
2014 Honda Civic EX For Sale
38 Great Deals out of 529 listings starting at $11,450
2013 Honda Civic EX For Sale
75 Great Deals out of 1,221 listings starting at $7,995