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My 1998 SLK 230 Engine lost power and misses after purchasing Amoco Gas

582 Views 12 Replies 12 Participants Last post by  Livefreeordie
I have a 1998 SLK 230 with 194k miles on it. It runs like new for a car this age. I purchased a half tank gas 87 octane within 10 minutes the engine lost power then started to miss very badly. i put an fuel system cleaner and added new gas 93 octane. it helped a bit but the engine still has a miss. i also changed the plugs.
should i changed the fuel filter. any help...thanks
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Fuel filter would be a good place to start. Sounds like trash in the fuel you purchased. Happened to me once, too!?
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Hi, welcome from Barrhead, Scotland. :smile:
87 octane? and the owner's manual says the minimal octane should be? 91 for your model
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Welcome from Southern Maryland USA!
Hi and welcome from the UK Midlands! :)

As Jeff has already mentioned above, it would be great if you could add your location and car details into your forum profile, please (instructions included in Jeff's post above). It helps others to help you whenever you post or have any questions in future. Thanks! :tu:
Welcome from the Sacramento Valley SLK Enthusiasts!
Welcome from Portland, Oregon. Enjoy the forum and the top down driving.
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