Problem vexing me a bit with my sons 2014 400 HO
#1
Problem vexing me a bit with my sons 2014 400 HO
I am currently chasing a very intermittent problem with my sons 2014 400HO. The machine will run fine then it will get a real rough idle and even stall and then be fine 2 minutes later.
I have changed the plug wd40'd the plug wire upped the idle slightly, I have changed the oil and filter and run seafoam through it several times. There is no vacum leeak showing (sprayed brake clean around the block)
There is no codes that I can see no warning or check engine light and the fuel pump seems to be fine any idea's? I am wondering if it has a fuel enricher or something. The machine will never shut down or run shytty with a load on the motor just when it idles down and a little when you try to rev it up????
I have changed the plug wd40'd the plug wire upped the idle slightly, I have changed the oil and filter and run seafoam through it several times. There is no vacum leeak showing (sprayed brake clean around the block)
There is no codes that I can see no warning or check engine light and the fuel pump seems to be fine any idea's? I am wondering if it has a fuel enricher or something. The machine will never shut down or run shytty with a load on the motor just when it idles down and a little when you try to rev it up????
#2
Even though it's fairly new, a tiny piece of plastic/rubber or a bit of trash in the carb can cause problems. I've found bits and pieces of both. If it's bothersome enough I'd take the carb out and physically clean it. All it takes is for something like this to get under the float needle or float around in the carb bowl and get sucked up by a jet.Even a partially blocked vent line can cause problems. Here's a good pdf section from a shop manual on the BST34 carb on cleaning,float adjustment,etc. https://www.google.com/url?sa=t&rct=...,d.aWw&cad=rja
#4
Yes could be as simple as too much throttle slack that can cause problems. Adjust the cable to where it's no more than 1/8" slack at the thumb lever. You can check the etc switch to see if it is working properly. Just pop the throttle control cap off,while the engine is running have it just above an idle. While holding the throttle, reach in with your other hand and grab the cable before it goes into the throttle lever control wheel. Release the thumb lever and it should spring back causing the etc contacts to touch killing the engine.
#6
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