VOLKSWAGEN OTHER ENGINE HARD TO START

I Have A 1985 Vw Vanagon With 250k Miles. It Turns Over A Couple Times Before Starting (battery Sounds A Little Weak), And Doesn't Start...

Vw Jetta 1999 Wolfsburg Edition 82,000 After Replacing Starter Engine Now Has Hard Starting When At An Idol Of 1200 Rpms Hit The Gas Again...