xp882

iTrader: (1)

ok i been having a problem getting my repu started and you 1st gen are the weber guru's . i have to pump the weber many times to get it started and then it just dies. SO i took the carb off to see what the problem was , btw i have the racing beat top and bottom manifold. with the carb off, key on and fuel going i can see threw the filter . when i open the blades/throttle the fuel will spray out of the two barrels but will stop? only will spray for 2sec inless i pump the carb. i figure thats why i have to pump the weber many times and it will start tell it runing that fuel out? is this how the carb should be working? or should it have a constant flow shooting out of the barrels?

perfect_circle

those jets, are from your accelerator pump, they are only there so the carb can keep up when you jab the throttle and transfer from your idle circut to your main. so it is only supposed to do it for a sec or so. so im assuming you probably have a clogged idle jet, you can take them out and clean them pretty simply, i think that would be the first thing to do. other things to check. do you have a fuel pressure gauge? what kind of pump are you using?

Hyper4mance2k

iTrader: (40)

it sounds like it's working correctly. as allready mentioned those are your accelerator pump jets. there is no fule comming out of the idle jets or main jets unless there is constand air flow across the chokes. You most likely have clogged idle jets. They seem to clog every 5-6000 miles and a quick shot with break cleaner fixed 'em right up.

xp882

iTrader: (1)

no fuel pressure gauge its a mallory 140. the carb is brand new. why would they be clogged? are those the ones on the top of the carb under the wingnut?

perfect_circle

yea, they could get clogged cause sometimes small things get throught the filter, or bad gas could build up

xp882

iTrader: (1)

why when i stand the carb straight up it pours fuel down but when its on it side it doesnt? its a side draft mani btw

xp882

iTrader: (1)

do i need to adjust something so it will get fuel when on its side?

perfect_circle

well since your AP is working, i dont think your needle is sticking...have you checked the jets?

xp882

iTrader: (1)

i can look threw the jet holes on both sets i have. do they have to be tighted a certian way? btw thanks for helping me perfect circle

xp882

iTrader: (1)

and if they where clogged. why does fuel come out of them when the carb is straight up?

perfect_circle

just snug them. what regulator are you using? have you checked the plugs after it wont start? and no problem, i love to help get the rotaries back on the road.

xp882

iTrader: (1)

a 4309 mallory and yes.. carb will only put fuel when standed up

perfect_circle

do you mean when it is vertical?? and if so where is it coming out of? and how where the plugs?

xp882

iTrader: (1)

plugs are new. yes when vertical comes out of the two round things insid the barrels in the center when looking threw the top

perfect_circle

well at this point, i dont really know what to say, other than you should contact robert from rotary shack. he has a section here is the link, you can post a message on his board, or message him, he is a weber guru.
https://www.rx7club.com/rotaryshack-164/

xp882

iTrader: (1)

think it might be to much fuel? what screws adjust setting on the carb? there are so many

xp882

iTrader: (1)

how do u adjust the float level? thanks

perfect_circle

there are two screws at the base of the two barrels, and they control the a/f ratios. there should be some sort of external float adjust. if there isnt, you can take the top off. now i know this carb is different, but it is similar, so it should give you some idea. the red is the air fuel ratio's, the yellow is the float adjust.

xp882

iTrader: (1)

both my webers do not have those float screws. i just dont understand why it works fine vertical but not horizontial and i tryed two sets of jets

nfld85GS

iTrader: (2)

With my webber i wasn't able to get the fuel to flow through the jets, but i found that i had a huge vaccuum leak so it wasn't able to create enough vaccuum to draw the fuel through the jets. Has the car been running with this carb before or are you trying to install it for the first time? Another thing you could do is to create your own vaccuum by using your hands to cover up the stacks when the car is starting with the intial fuel pumping.

xp882

iTrader: (1)

i have the top and bottom side draft manifold and the bottom has a nipple for a hose to be hooked up is that for vaccum to draw the fuel? i bought the motor and carb together

xp882

iTrader: (1)

pic

nfld85GS

iTrader: (2)

that is the nipple for the brake booster line. Without that line, you have no brakes and stopping really becomes hard.

xp882

iTrader: (1)

i did this and it started. but wont run with the throttle all the way off wont idle i guess will back fire and die but if i give is some throttle it will run fine? timing issue? thanks and thanks a ton nfld85gs

nfld85GS

iTrader: (2)

if it runs when you give some throttle but dies when idleing, i'm gonna guess that there still is a small vaccuum leak somewhere. Even the smallest vaccuum leak will cause the carb to run poorly. what i would do from here is to adjust the idle screw to raise the idle up to where it will keep running and then get a can of starting fluid or carb cleaner and spray it around the carb on hoses and intakes. If the rpms go up, then there is a vaccuum leak sucking the fluid in where it shouldn't. If your timing was ok before the new carb, then it should still be fine now.