Join Date: Feb 2007
Location: Tulsa Oklahoma
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Low Sulfur Problem Solved - for now
Thanks for all the suggestions. Seal replacement on the VW injection pump solved that problem, at least for 2000 miles so far. The Powerstroke cam sensor was OK, but the water drain valve and rubber fuel lines were all leaking. They all had to be replaced, but the truck still wouldn't run. My mechanic replaced my low-reading oil gauge, but the new gauge still showed low pressure. Then it hit me, DUH! The oil pump wasn't delivering oil to the injectors. We replaced the oil pump, refilled the oil reservoir and the truck fired up and runs better than ever.
I've got 4 other diesel-powered machines, but I run them on off-road diesel and have had no problems.
On the advice of my VW mechanic I'm adding cetane booster to the ultra low sulfur diesel fuel I run in both my car and the Powerstroke. With some luck that will do the trick.