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

50,875

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.

40,245

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 77,410 nationwide Civic listings starting at $1,000.

ZIP:

Search Honda Civic Questions

Honda Civic Experts

#1 Takoda Fraser
Takoda Fraser
Reputation 970
#2 Jonathan Ford
Jonathan Ford
Reputation 960
#3 Tom Demyan
Tom Demyan
Reputation 910
View All

Related Models For Sale

Used Honda Accord
814 Great Deals out of 81,559 listings starting at $899
Used Honda Civic Coupe
201 Great Deals out of 18,535 listings starting at $1,500
Used Toyota Corolla
874 Great Deals out of 74,397 listings starting at $1,500
Used Toyota Camry
1,095 Great Deals out of 96,233 listings starting at $1,250
Used Honda CR-V
814 Great Deals out of 59,334 listings starting at $1,200
Used Nissan Altima
1,088 Great Deals out of 82,556 listings starting at $670
Used Hyundai Elantra
568 Great Deals out of 55,000 listings starting at $1,000
Used Honda Accord Coupe
171 Great Deals out of 10,688 listings starting at $2,200
Used BMW 3 Series
1,371 Great Deals out of 37,814 listings starting at $1,700
Used Ford Focus
699 Great Deals out of 58,626 listings starting at $995
Used Ford Mustang
363 Great Deals out of 44,352 listings starting at $1,000
Used Nissan Sentra
608 Great Deals out of 52,941 listings starting at $1,799
Used Volkswagen Jetta
467 Great Deals out of 31,187 listings starting at $150

Used Cars For Sale

2017 Honda Civic EX For Sale
12,784 listings starting at $14,502
2016 Honda Civic EX For Sale
4 Great Deals out of 860 listings starting at $14,998
2015 Honda Civic EX For Sale
11 Great Deals out of 597 listings starting at $11,350
2014 Honda Civic EX For Sale
21 Great Deals out of 781 listings starting at $10,446
2013 Honda Civic EX For Sale
36 Great Deals out of 1,103 listings starting at $7,000