Author Topic: Carb tuning for GSXR (Read 8362 times)

gsxr400 racer · « **Reply #15 on:** October 16, 2007, 10:54:20 AM »

what mains are in it where is the needle set at ? buy cr8 or 9 e's till you get the carbs straightened out will save you some money while tunning. You may have oring/ float needle problems though.

kako · « **Reply #16 on:** October 16, 2007, 07:07:01 PM »

oops... now she wont start tho.. like it trys to but it just cant. weres the middle hose that comes from the center of the tank go? likes its almost like shes not getting enough fuel...ps.. the air box wasnt fitted perfect.. so i will try doing that first.

gsxr400 racer · « **Reply #17 on:** October 16, 2007, 07:43:27 PM »

Its not gonna start with them plugs

Hose routes to the bottom of the bike, its just a vent, i take them off because if they get pinched they dont allow fuel

kako · « **Reply #18 on:** October 16, 2007, 08:37:53 PM »

no faith jay? hahah she did start.. i think i just needed to prime the carbs.. because the bowls were on empty... but it turn it 3 out... because i thought i turned them to far in for some reason.. lol.. anyways i have tomorrow to work on it.. i think it might post a sound clip just for a treat for everyones help

gsxr400 racer · « **Reply #19 on:** October 16, 2007, 09:02:06 PM »

cool

kako · « **Reply #20 on:** October 16, 2007, 10:36:15 PM »

is there a proper way to prime the carbs?? other then sucking on the vacuum tube? how you know when the bowls are full? can you prime to much?

PitterB4 · « **Reply #21 on:** October 16, 2007, 11:45:02 PM »

You may have to remove a small screw from the face of the fuel tap to get it there but straight up is the prime position (someone correct me if I'm wrong, it's been a while since I looked at my old B4). If the carbs were dry, I'd just leave it there for a few minutes and then fire her up. If your floats aren't set right or you have some bad o-rings, leaving it there too long will result in fuel getting past the carbs and into the motor.

kako · « **Reply #22 on:** October 20, 2007, 04:17:40 PM »

hmm.. the bike is still running like poop on a stick... im kinda out of ideas... like i had it started at 2 turns out and it was rich.. and i now have it a 1.5 turns and it wont think about starting.. but it sounds like there is no explosions... so maybe the plugs are totally gone now..

kako · « **Reply #23 on:** October 20, 2007, 08:05:28 PM »

well i think im going to rebuilt the carbs because i think they are all gummed up.. so im going to canadain tire tomorrow... what should i put on my shopping list?

gsxr400 racer · « **Reply #24 on:** October 20, 2007, 09:21:24 PM »

if you dont know about the orings its a good starting point

kako · « **Reply #25 on:** October 21, 2007, 05:25:44 PM »

oh i know about them... can i get them localy? or is it just easier to buy them from you if you have them? poo i left my o ring grease at home to.. hmm that sucks.. well im going to the store in 10 mins so i think im just going to get the carb spray and something to make a bath for the carbs.

kako · « **Reply #26 on:** October 21, 2007, 05:29:43 PM »

ps o rings were replaced last winter... k update... the carb cleaner worked when i cleaned the pilot jets out... but its still running rich at 1 1/2 turns out... does this seem weird to anyone

gsxr400 racer · « **Reply #27 on:** October 23, 2007, 10:38:27 AM »

rich as in what the bottom or the top? plugs black already?
maybe you need new float needles? well carb kit capital used to sell them but they seem a bit out of them and cant find them on the web anymore so let me know if you need any and i'll see what i can do.
cheers

kako · « **Reply #28 on:** October 23, 2007, 02:00:03 PM »

bottom end... top end guns great,..

gsxr400 racer · « **Reply #29 on:** October 23, 2007, 02:45:55 PM »

fuel screw orings, float needles, you have b4 carbs instead of gsxr carbs and are missing the pilot plugs? hard to say why a number of things it could be, emulsion tubes, maybe someone put bigger pilots in, etc..