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Old 11-08-2017, 05:01 PM   #1
Senior Member
Join Date: Oct 2016
Posts: 186
2012 Forester Ford E450 Spark Knock

Several months ago, I made a post describing a problem that I had with spark knock (pre-ignition) on my MH with 30,000 mikes. I used several major brands of fuel, changed the air filter, disconnected the battery in hopes of resetting the computer, all to no avail.

Then I read about cleaning the Mass Air Flow sensor in the air filter canister, using the special spray cleaner for that purpose. It worked!! No more spark knock.

It's quite simple to do and wanted to share
Mach428 is offline   Reply With Quote
Old 11-08-2017, 05:45 PM   #2
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Join Date: Nov 2011
Posts: 941
That's a nice tidbit. Our Forester thanks you!
SkipnTerri is offline   Reply With Quote
Old 11-08-2017, 08:44 PM   #3
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Join Date: Apr 2012
Location: South Carolina
Posts: 1,437
Thanks for reporting back with your solution.
2011 Sunseeker 3100
2016 Ford Edge Toad
RamblerGuy is offline   Reply With Quote

2012, ford, forester

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