Originally Posted by
like9d
Have 2 GO 3p Race. Both have approx. 3/4 gallon on them. Both having same issue. Lean bog on low. Trying to race tune and when i punch the throttle, boooooooggggggg....richen up the low end and it goes away. With this much run time, shouldn't i be able to lean everything up a bit. Both idle great, but getting the temps up is very difficult. Do i have to wait for the metal pinch to go away a little more? I have a go 5p and never have had any issues. These 2 mills seem to want to tune backwards of every other engine i have. Suggestions/comments.....thanks
HALF TANK BOG
This is what happens when the HSN is too lean .
At half tank the over all tank pressure is less so when you go to give it gas it bogs . How lean the HSN is depends on how soon it happens in the tank IE if it happens at half tank richen HSN 2/8 if it happens and 3/4 full richen 3/8 if it happens at 1/4 full richen 1/8
its common when you get lean bog people go for the LSN and find it dosent really work. This is because the HSN governs the inlet of fuel over all over all , when you have low pressure in the tank the engine starves for fuel , the HSN needs to be richened to allow for a lesser pressure to feed the engine.