Hpi savage f4.6 carb problem low speed not setting

[Eray]

I changed carb the problem still continues, the sound is bad please help. I wonder if there is a crack in the block

car video

my english is bad so sorry

 

[monstertruckier15]

Did you tune it. I never trust buying a new carb and putting it on. Sounds like the low is too lean. Winter is the worst time to run and tune a nitro engine. Start with the stock needle settings and then look for air leaks. Usually around the exhaust or engine backplate.

 

[Eray]

Did you tune it. I never trust buying a new carb and putting it on. Sounds like the low is too lean. Winter is the worst time to run and tune a nitro engine. Start with the stock needle settings and then look for air leaks. Usually around the exhaust or engine backplate.

ım tune perfect but this problem auto low speed lean and rich problem screw fixed ı dont know this problem my engine performance very good

 

[monstertruckier15]

All needle settings are set to flush setting. If the low is rich turn it in 1/8 turn at a time. This carb has 3 needles Only mess with the low if it is rich off the line.