How do I check for a vacuum leak on a 2004 3.7 liberty, code says it could be a vacuum leak for rich bank 2

Asked by Dec 01, 2016 at 02:03 PM about the 2004 Jeep Liberty

Question type: Maintenance & Repair

I have a 2004 3.7liberty. I keep getting a rich bank code and only one plug is
fouling. Code says it could be a vacuum leak on the intake manifold, how to I
see where the vacuum leak could be?

2 Answers

39,935

A Vacuum leak should make it run lean, not rich. If you look for loose or cracked vacuum hoses you might find a leak but I don't think that is your problem. I would suspect a leaking fuel injector in the cylinder with the fouled plug.

Ive changed out the injector and spark plugs.

Your Answer

Add photo

Related Questions

Search Jeep Liberty Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Jeep Liberty Experts

#1 fixmyjeep
fixmyjeep
Reputation 1,060
#2 Tom Demyan
Tom Demyan
Reputation 1,040
#3 rst429
rst429
Reputation 930
View All

Related Models For Sale

Used Jeep Grand Cherokee
49 Great Deals out of 3,385 listings starting at $2,500
Used Jeep Wrangler
140 Great Deals out of 1,113 listings starting at $5,900
Used Ford Escape
134 Great Deals out of 3,565 listings starting at $1,900
Used Honda CR-V
49 Great Deals out of 1,922 listings starting at $2,995
Used Toyota RAV4
110 Great Deals out of 2,138 listings starting at $3,000
Used Ford Explorer
17 Great Deals out of 907 listings starting at $2,995
Used Nissan Xterra
73 listings starting at $4,500
Used Toyota 4Runner
3 Great Deals out of 322 listings starting at $5,995

Used Cars For Sale

2012 Jeep Liberty For Sale
19 listings starting at $9,888
2011 Jeep Liberty For Sale
16 listings starting at $11,995
2010 Jeep Liberty For Sale
14 listings starting at $9,995
2009 Jeep Liberty For Sale
13 listings starting at $8,980
2008 Jeep Liberty For Sale
4 Great Deals out of 20 listings starting at $4,939