1991 Ford F250 Support Question
Find answers below for this question about 1991 Ford F250.Question posted by pzulauf on February 4th, 2013
Starding Problem
won't start, except when I plug in the Block Heater
Current Answers
Answer #1: Posted by roadrunnertim on February 5th, 2013 8:11 AM
I'm assuming you have a diesel truck. My best guess would be to replace the glow plugs. That should solve the problem. If that doesn't work, then you may have to replace the glow plug relay.
Here's what your glow plugs and the glow plug relay looks like for your vehicle.
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