98 Chevy Truck Jumped Time! How to Tell?
I've got a 98 Chevy 2500k that I think might have jumped time. It won't start, turns over fast then seems to almost lock up, fast then lock up, sometimes coughs and might even backfire. I know to use the #1 piston and turn it to top dead center then look at the timing marks but how far out is normal and how far off TDC is not. Any other way to determine if I have a timing chain problem before I tear it apart. That's a lot of work if I miss diagnose it. Thanks.