Bliz 0 Posted November 12, 2022 My '09 Big Red has started running rich, smells rich & spark plug fouls out after an hour or so of run time. I have had some fuel injection experience but need some thoughts on trouble shooting, sensors, and sensor values? Share this post Link to post Share on other sites
Fishfiles 20,147 Posted November 12, 2022 Welcome to the site , I would guess you are from maybe Australia ??? You say you have a 2009 Big Red , what is that ? Share this post Link to post Share on other sites
Bliz 0 Posted November 12, 2022 In Plains MT, MUV700 Share this post Link to post Share on other sites
toodeep 1,759 Posted November 12, 2022 Is the air filter and intake tube clean and free from any obstructions? If your still using the factory intake system mice like to build a nest on top of the fuel tank exactly where the factory air intake is. 1 Share this post Link to post Share on other sites
Bliz 0 Posted November 13, 2022 You have a good thought. Last summer I did a top end, in chassis re-ring job & had the air filter area apart. All looked good and I installed a new air filter. But......I didn't look at the intake system before the filter? Share this post Link to post Share on other sites
