beta rider Posted August 17, 2024 Report Share Posted August 17, 2024 Hi, I’m about to buy a 4rt. How are people cleaning the fuel injection throttle body. Is it similar to a carb where you use carb cleaner or an airline to clean it out after a ride? Quote Link to comment Share on other sites More sharing options...
konrad Posted August 17, 2024 Report Share Posted August 17, 2024 The throttle body does not need cleaning, that is the air filter's job. Or are you talking about the outside of the TB? 1 Quote Link to comment Share on other sites More sharing options...
beta rider Posted 2 hours ago Author Report Share Posted 2 hours ago Just an update on this. I’ve had my 4rt bought new for about a year. The inside of the throttle body does in fact need cleaning. I’ve found the inside of the body, around the butterfly value had a light coating of oil. This is either air filter oil residue sucked from the filter, blowback from the engine (I guess that’s why the air filter has a fire proof mesh) or both. I easily cleaned this out with carb cleaner. As a note DON’T DO THIS! The solvent in carb cleaner affects the throttle body air pressure/temp sensor. It was a bitch to start at my next trial until I flushed enough air through the throttle body. Use specialist throttle body cleaner, which is designed not to effect the sensor. Quote Link to comment Share on other sites More sharing options...
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