EB4X
Explorer Addict
- Joined
- December 28, 2016
- Messages
- 1,379
- Reaction score
- 930
- City, State
- Orange county, Ca
- Year, Model & Trim Level
- 95 Explorer 4X 4.0 ohv
You never had the heads off this one correct? As you know could be some significant carbon buildup on piston heads, had this problem with prior Ranger, "steamed cleaned" them by sucking in spaced out "sips" of distilled water through vacuum intake hose.... can get even better results with sea foam or other engine cleaners. After 3 minute treatment no more pinging for at least 14 months..... then repeat. Change oil after treatment.
