jet problem

[fastexgirl4c]

every jet i try in my 400ex carb doesnt seem right..i have a 169 jet in it right now..and it has no power...its really slow..and boggs out in every gear?? any suggestions

[cals400ex]

what bike, what carb, what mods, whats your elevation, whats the temp your riding in, what brand of jets you using????

where did you find a 169? i have never seen one of those. :confused:

[fastexgirl4c]

it came in a jet kit..im gonna put a 148 in and see wat happens..all the mods are in my sn..its bored .40 over ..its about 73 degrees..and its flat on my driveway..but we live on top of a hill...wat would that have to do with nething thou..

[cals400ex]

well, i won't be able to help you with an edelbrock carb. i have never touched one.

the elevation really matters. the higher you go, the thinner the air gets. thus, you need to use smaller jets at higher levels.

so, someone living at sea level and someone living at 5000 ft above sea level may have somewhat drastic jetting differences from each other to make their bikes both run great.


are you sure the jets you bought are made for that carb?? also, give edelbrock a call. i hear they are great with their customer service and can usually get the jetting close to where it needs to be.

does that carb even have jets?? just wondering because the one for the 400ex only has needles and an adjustment knob from what i read....

[fastexgirl4c]

its not an elbrock..its a 400ex carb..its runnin a lil better wit the 148 in it..im also gonna check the clutch ..but i dont think its that

[hondarider2006]

It wouldn't be your clutch. If your clutch was slipping, your motor would still rev, but you wouldn't have any power. If your motor is bogging, than its your jetting. What slot is your clip on? Also what are you running for a pilot? Have you tried a plug test??

[cals400ex]

i would say say the 148 is even too big. your bored .040 over but what is the compression? do you have air box lid mods or not? its tough to tell. where is the needle clip position at?