HICCUPS!
Thread Starter
Senior Member
Superstock
Joined: Sep 2013
Posts: 460
From: Costa Mesa, CA
HICCUPS!
What actually causes the occasional minor backfire (Hiccup) through the carbs? It usually happens when blipping the throttle at low RPMs. Is it caused by Fuel screw adjustment, Pilot jet size, needle height, slide lift rate, or a combination of the aforementioned circuits. Too Rich or too lean? Just wondering. Any, or all, thoughts welcome.
Senior Member
SuperSport
Joined: Apr 2013
Posts: 972
What actually causes the occasional minor backfire (Hiccup) through the carbs? It usually happens when blipping the throttle at low RPMs. Is it caused by Fuel screw adjustment, Pilot jet size, needle height, slide lift rate, or a combination of the aforementioned circuits. Too Rich or too lean? Just wondering. Any, or all, thoughts welcome.
Senior Member
SuperSport
Joined: Jul 2012
Posts: 582
From: Santa Fe, New Mexico
What actually causes the occasional minor backfire (Hiccup) through the carbs? It usually happens when blipping the throttle at low RPMs. Is it caused by Fuel screw adjustment, Pilot jet size, needle height, slide lift rate, or a combination of the aforementioned circuits. Too Rich or too lean? Just wondering. Any, or all, thoughts welcome.
Thread Starter
Senior Member
Superstock
Joined: Sep 2013
Posts: 460
From: Costa Mesa, CA
Helped, but...
Carbs synced, #48 pilots help but feels fat (rich) off idle, played w/ fuel screws little change. Does it more with #45 pilots then it does with #45S (Honda Proprietary). #45's feel crisper so I'll just get used to it as I'm rarely near idle!
I am one of those SH owners that like s the DJ/K&N set up. It took a while to get it where I liked it as they rely on mains and needles leaving the off idle, small throttle opening a tuning challenge. That said I ordered new OEM springs and needles to try Hawks set up. I'm getting very proficient at carb removal and installation!
I am one of those SH owners that like s the DJ/K&N set up. It took a while to get it where I liked it as they rely on mains and needles leaving the off idle, small throttle opening a tuning challenge. That said I ordered new OEM springs and needles to try Hawks set up. I'm getting very proficient at carb removal and installation!
Senior Member
SuperSport
Joined: Apr 2013
Posts: 972
Carbs synced, #48 pilots help but feels fat (rich) off idle, played w/ fuel screws little change. Does it more with #45 pilots then it does with #45S (Honda Proprietary). #45's feel crisper so I'll just get used to it as I'm rarely near idle!
I am one of those SH owners that like s the DJ/K&N set up. It took a while to get it where I liked it as they rely on mains and needles leaving the off idle, small throttle opening a tuning challenge. That said I ordered new OEM springs and needles to try Hawks set up. I'm getting very proficient at carb removal and installation!
I am one of those SH owners that like s the DJ/K&N set up. It took a while to get it where I liked it as they rely on mains and needles leaving the off idle, small throttle opening a tuning challenge. That said I ordered new OEM springs and needles to try Hawks set up. I'm getting very proficient at carb removal and installation!
