before i go spend $80 on a tester... how bad would the car be ideling? i am more or less just getting a little knocking, and some gas smell coming from the exhaust... and what do you mean by stumble?

i am offically a troll... so take my information and advice with a grain of salt.

08/15/2001 - 11/05/2001 : 1999 Ford Contour SVT : 170fwhp - 147.9 fwtq
07/17/2001 - __/__/____ : 2001 Roush Mustang GT Stage 1
11/05/2001 - __/__/____ : 2001 Ford F-150 SVT Lightning