Question about Harley Davidson FLSTC Heritage Softail Classic Motorcycles
Posted by Anonymous on
Hi Anonymous, I dont think so. Did your MPG improve? As long as your engine oil temperature stays between 180 and 220 you will be fine. Good luck
Posted on May 13, 2015
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Posted on Jan 02, 2017
Your Twin Cam plug should be a 6R 12 Harley Plug. Often times the back fire is just the nature of the beast depending on what type of pipes you are running. Harleys do run lean, its an EPA thing thtas why they choke them down from the factory. Since you have a carb you could have an intake leak around the Intake. Also Under the carb is an adjustment screw. Harley plugs it up so people don't play with it. You have to just drill out the plug this will set your air fuel. Whenever I take a carb off I drill out that plug. Heat your bike up operating temp and ear tune that screw. Only other way is with air fuel analizer or a dyno. good luck.also that backfire is caused by fuel hitting your exhaust when you let off just to let you know.
Posted on Jun 15, 2009
You MUST rejet the bike!!! When cold or warming up the bike should be running in a rich mode. After it warms up you are running lean. Cheaper to rejet than replace "hole in the top of pistons".
To help prevent more problems in the future, find who ever told you that rejetting was not required, turn them around, take your right foot and kick their @#$. This could save you lots of grief and $$ in the future.
Posted on Nov 27, 2009
If you did not adjust your EFI (load a different MAP) then you are leaning the bike way out! This is very bad as the bike will often run at an AFR of 14.0+. do not run the bike until you get the fuel adjusted!! You will void the warranty!!!
Posted on Dec 16, 2009
SOURCE: My 97 fat boy seems
With aftermarket pipes they will almost always run on the lean side due to the reduction in back pressure...Retuning the carb is required. If you have an aftermarket air intake, this will also effect it.
Posted on Jul 21, 2011
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