Nuclear_Inc
Active Member
- Thread starter
- #1
Hi,
I have a 2021 Gladiator overland MT 3.6 with engine detonation. I've owned it for a year without issues. Previous fill up at Costco with 87 caused real bad detonation. Every time I would accelerate low speed 3 or 4th gear it would sound nasty LOUD and was able to replicate it every time I tried. I went and dumped a bottle of Lucas octane booster, Lucas injector cleaner and topped off tank with 6 gallons of 93 octane. It went away slowly after riding for a bit to clear the lines of bad fuel. Fast forward I went ahead and filled up today full tank with 87 BP station. Occasionally s heard a very quick and short detonation. Had to lower music and a/c to hear it carefully.
Now I know 87 is the recommended fuel per the owners manual. However, after owning this Jeep for over a year on a steady diet of 87 octane. Why would it start doing this? Does it take a few tanks for the ECM to adjust timing back to 87 after running the boosted octane gas? All though its nearly its very hard to replicate or hear with the fresh 87 fill up. Definably something's either wrong with the timing. Or my area just happens to have poor fuel lately. Jeep has 13k miles with 1k miles on the current engine oil (Amsoil Signature Series 0w-20/ filter).
I drive roughly 70% highway 20 miles a day in the Twin Cities It's been almost a year of trouble free engine with 87 fuel.
I have a 2021 Gladiator overland MT 3.6 with engine detonation. I've owned it for a year without issues. Previous fill up at Costco with 87 caused real bad detonation. Every time I would accelerate low speed 3 or 4th gear it would sound nasty LOUD and was able to replicate it every time I tried. I went and dumped a bottle of Lucas octane booster, Lucas injector cleaner and topped off tank with 6 gallons of 93 octane. It went away slowly after riding for a bit to clear the lines of bad fuel. Fast forward I went ahead and filled up today full tank with 87 BP station. Occasionally s heard a very quick and short detonation. Had to lower music and a/c to hear it carefully.
Now I know 87 is the recommended fuel per the owners manual. However, after owning this Jeep for over a year on a steady diet of 87 octane. Why would it start doing this? Does it take a few tanks for the ECM to adjust timing back to 87 after running the boosted octane gas? All though its nearly its very hard to replicate or hear with the fresh 87 fill up. Definably something's either wrong with the timing. Or my area just happens to have poor fuel lately. Jeep has 13k miles with 1k miles on the current engine oil (Amsoil Signature Series 0w-20/ filter).
I drive roughly 70% highway 20 miles a day in the Twin Cities It's been almost a year of trouble free engine with 87 fuel.
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