Put gas in at a station I don't normally use. Later that night the van started "popping" in the throttlebody, preignition, right? Put a combination gas dryer/system cleaner in 3/4 full tank. Have driven just over 100 miles. Have not seen improvement. No problems prior to putting in the gas. Wait longer or is something else the problem?.
Nov 17, 2011 at 4:31 PM