hiimnewhere

A friend of mine is having issues with cold start in his truck. Its a 04 burban 6.0 with a magnuson blower. It doesnt have an issue actually starting, Just when it is cold it cranks over and just starts really hard. He tried putting a new starter in it and it actually broke teeth off the flywheel. Any suggestions?

Also if this is in the wrong section please feel free to move it. Thanks in advance