View Single Post
Old 10-09-2001, 03:35 PM
Ken300D Ken300D is offline
Registered Diesel Burner
Join Date: Aug 2001
Location: Northern Virginia
Posts: 2,911
I usually tell people to change oil, add STP (helps thicken oil a bit) and run premium fuel before the test.

Also, if you haven't used a fuel injector cleaner recently, this can help a great deal. I get STP injector cleaner and put two of those bottles in the tank.

O2 sensor is a good suggestion too.

Reply With Quote