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

57,005

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

Jeep Liberty Experts

#1 fixmyjeep
fixmyjeep
Reputation 1,220
#2 Tom Demyan
Tom Demyan
Reputation 1,080
#3 rst429
rst429
Reputation 1,040
View All

Related Models For Sale

Used Jeep Grand Cherokee
82 Great Deals out of 3,504 listings starting at $1,488
Used Jeep Wrangler
107 Great Deals out of 1,388 listings starting at $3,989
Used Ford Escape
185 Great Deals out of 4,367 listings starting at $428
Used Honda CR-V
55 Great Deals out of 2,286 listings starting at $1,570
Used Toyota RAV4
109 Great Deals out of 3,236 listings starting at $2,995
Used Toyota 4Runner
4 Great Deals out of 388 listings starting at $5,995
Used Nissan Xterra
71 listings starting at $2,250
Used Ford Explorer
31 Great Deals out of 1,140 listings starting at $1,790

Used Cars For Sale

2012 Jeep Liberty For Sale
10 listings starting at $8,888
2011 Jeep Liberty For Sale
10 listings starting at $8,999
2010 Jeep Liberty For Sale
29 listings starting at $8,997
2009 Jeep Liberty For Sale
7 listings starting at $8,980
2008 Jeep Liberty For Sale
4 Great Deals out of 21 listings starting at $5,405