Blazer won\'t start I bought my first K5 friday and first vehicle for that matter. Its a 77 Blazer. It worked just fine up until this morning. It started once but would not start again. Sometimes it will fire but immediatly shuts itself off. The motor is a 350 but not the original. I think I got some bad gas. What do you think? Also, what are some cheap ways to increase power with out sacrificing gas milage? I'm thinking K&N.