My car is running lean i changed the 02 sensor the mass airflow and fuel filter and I fit the vacuum leak what else can be wrong

Asked by Mar 26, 2014 at 09:07 PM about the 1999 Buick Park Avenue 4 Dr Ultra Supercharged Sedan

Question type: Maintenance & Repair

2 Answers

90

Could possibly be the fuel pump itself or clogged injectors. You could rule out the fuel system itself by running a series or fuel pressure tests. Two main culprits of running lean, either 1)not enough fuel and 2) vacuum leaks allowing unmetered air into the system.

Best Answer

Thank you

Your Answer

Add photo

Related Questions

Park Avenue

Looking for a Used Park Avenue in your area?

CarGurus has 511 nationwide Park Avenue listings starting at $1,400.

ZIP:

Search Buick Park Avenue Questions

Buick Park Avenue Experts

#1 Jking1838
Jking1838
Reputation 970
#2 Tom Demyan
Tom Demyan
Reputation 660
#3 Jim Campbell
Jim Campbell
Reputation 620
View All

Related Models For Sale

Used Buick LeSabre
11 Great Deals out of 2,343 listings starting at $1,795
Used Buick Regal
121 Great Deals out of 10,946 listings starting at $1,850
Used Chevrolet Impala
795 Great Deals out of 34,381 listings starting at $799
Used Cadillac DeVille
6 Great Deals out of 1,954 listings starting at $1,750
Used Buick Century
1,071 listings starting at $3,300
Used Lincoln Town Car
30 Great Deals out of 2,076 listings starting at $1,995
Used Mercury Grand Marquis
26 Great Deals out of 2,201 listings starting at $1,995
Used Buick Riviera
137 listings starting at $2,495
Used Chevrolet Tahoe
775 Great Deals out of 28,448 listings starting at $1,500

Used Cars For Sale

2005 Buick Park Avenue For Sale
21 listings starting at $2,500
2001 Buick Park Avenue For Sale
45 listings starting at $1,400