Always test your welder on a p[piece of scrap the same as what you want to weld. Mig welders will change from day to day depending on humidy ect. here is a web site that will go over the basic things with mig welding
http://www.nanungtinda.com/Car/gh1.htm
Practice a little bit before you weld on you patch and you will do it with no problem.


37 Chevy 1/2 Ton
86 Chevy Blazer
98 Drudge 24 valve Cummins
One worn out Timberjack