Repeated cylinder 2 misfire

20

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

71,415

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.

47,855

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?

20

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

2 of 2 people found this helpful.
20

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 88,112 nationwide Civic listings starting at $1,299.

ZIP:

Search Honda Civic Questions

Honda Civic Experts

#1 Tom Demyan
Tom Demyan
Reputation 1,000
#1 Takoda Fraser
Takoda Fraser
Reputation 1,000
#3 Jonathan Ford
Jonathan Ford
Reputation 980
View All

Related Models For Sale

Used Honda Accord
948 Great Deals out of 77,757 listings starting at $899
Used Honda Civic Coupe
208 Great Deals out of 16,556 listings starting at $1,100
Used Toyota Corolla
856 Great Deals out of 70,589 listings starting at $1,874
Used Toyota Camry
1,100 Great Deals out of 90,760 listings starting at $1,599
Used Nissan Altima
1,147 Great Deals out of 79,679 listings starting at $500
Used Honda CR-V
920 Great Deals out of 59,355 listings starting at $1,990
Used Hyundai Elantra
649 Great Deals out of 43,506 listings starting at $1,500
Used Honda Accord Coupe
182 Great Deals out of 10,569 listings starting at $1,995
Used Ford Focus
634 Great Deals out of 57,259 listings starting at $795
Used Ford Mustang
541 Great Deals out of 45,846 listings starting at $1,999
Used BMW 3 Series
945 Great Deals out of 30,262 listings starting at $1,000
Used Nissan Sentra
501 Great Deals out of 52,630 listings starting at $2,000
Used Hyundai Sonata
823 Great Deals out of 46,091 listings starting at $1,000

Used Cars For Sale

2017 Honda Civic EX For Sale
16,511 listings starting at $19,000
2016 Honda Civic EX For Sale
3 Great Deals out of 467 listings starting at $14,980
2015 Honda Civic EX For Sale
30 Great Deals out of 787 listings starting at $10,895
2014 Honda Civic EX For Sale
52 Great Deals out of 1,376 listings starting at $9,500
2013 Honda Civic EX For Sale
25 Great Deals out of 594 listings starting at $7,890

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.