Author Topic: weber carb ? (Read 6290 times)

Thumper · « **on:** Feb 26, 2008, 08:09:07 PM »

Hey guys i just got a used weber i bought off of a member on here and i think it came off a landcruiser, seller was unshure what it came off of just got it in a trade, but it came with a landcrusier adapter plate so im guessing its from a cruiser, but anyways got my new adapter plate today and bolted it all up and truck fired up and then died and started pumping fuel out the top of the carb thew the holes where the yellow lines point, so im guessing the jets are prob way too big? or maby something is stuck sence its just been sitting, havent opened the carb up yet the thing looks brand new, and i got a great deal so im just gonna rejet or whatever i gota do too fix it and run it but heres my question if i need too rejet what jets do i replace and what size jets does the stock webers for the 22r come with?

Im wanting too run this on my rig for an upcomeing run in march so im gonna try too hurry and get the parts too fix it.
Thanks for the help guys
adam

79coyotefrg · « **Reply #1 on:** Feb 26, 2008, 08:35:48 PM »

oh man, fuel coming out the air jets

pull the top of the carb off and the fuel jets are in the bottom of the fuel bowl,

see what the numbers are,

i have 170 fuel jets i think

tty tomorrow

Thumper · « **Reply #2 on:** Feb 26, 2008, 09:00:06 PM »

Hey thanks glen im gonna pull it appart tomarrow night ran out of time tonight got off work late so ill pull it appart and see what i got tomarrow, do you think i will just have too replace the fuel jets in the bowl or the idle and main jets also? and the jets your talking about is that the main jet , ive been looking on www.webercarbsdirect.com for parts and thats the only jets i see that go up that high.
Thanks again
adam

RN37DD · « **Reply #3 on:** Feb 27, 2008, 10:09:02 AM »

sounds like your float level is to high or even sticking. i think I'm running 170 air jets with 145/142 main jets. 65 primary idle jet. i got a weber that looked new outside and was totally gunked inside.. lots of cleaning and it works fine now.

OOPS · « **Reply #4 on:** Feb 27, 2008, 09:26:18 PM »

If it was not drained when it was pulled off and set aside it should be taken apart and soaked in carb cleaner. Then put back together with a new kit. That is what I do on MC carbs, know nothing about Webers.

RN37DD · « **Reply #5 on:** Feb 28, 2008, 09:15:21 AM »

the Weber's are so simple and adjustable you just got to love em. if you have an older carb with the stock jets you'll probably need richer jets to deal with this low BTU fuel sold these days. lcengineering sells a good jet kit. just call them up and tell them what you want to do.

Thumper · « **Reply #6 on:** Feb 28, 2008, 06:18:27 PM »

Hey guys the float was just stuck from sitting i guess havent pulled it apart i just tapped on it with some plyers just too see if that would do anything and it actually did runs smooth now,but i think its got too big of jets still because it backfires out the exhaust when i rev it and let off but if i bring it back down slow it wont so must be getting too much fuel so im gonna pull it apart and put some smaller jets back in,
thanks for all the help
adam

Thumper · « **Reply #7 on:** Feb 28, 2008, 08:04:16 PM »

looked down threw top of the air holes where the fuel was comeing out and the jets there say 160 and looks like 110, 160 drivers side jet 110 pass side jet.
Does anyone have a picture or anything showing the inside of the carb
thanks
adam

RN37DD · « **Reply #8 on:** Feb 29, 2008, 10:04:05 AM »

160 air jets are pretty lean. some of the Weber's came with 160 air jets and 140 main jets for the 20r engine. i got a redline weber that came that way. check out redineweber on-line they should have some brake downs that may help you.

79yoda · « **Reply #9 on:** Mar 04, 2008, 04:46:47 PM »

I have a weber that I recently installed and my truck is back firing and then it will just die. after reading this I looked down and my jets are 170 passenger and 180 drivers side. Is that to rich for a 20r with no mods.

79yoda · « **Reply #10 on:** Mar 04, 2008, 05:16:16 PM »

oh yeah it's a 32/36

RN37DD · « **Reply #11 on:** Mar 05, 2008, 08:52:47 AM »

no thats what i had on my 20r. but it had cam and a 22r exhaust manifold, so it wasn't really stock. those are air jets and how rich your carb runs also depends on the size of your main jets and idle jets. main jets are in the bottom of the float bowl and the idle jets are on the side of the carburetor. my carb is slightly under jetted right now. i got more on the top with the bigger jets. right now I'm side tracked on some other mod I'm doing on my truck, plus i drive it every day.

79yoda · « **Reply #12 on:** Mar 05, 2008, 01:45:00 PM »

when I get home tonight I will look to see what size main jets I have just to info me what would be a good jet size for me? The truck isles fine just when you start to drive it starts to backfire. Thanks

RN37DD · « **Reply #13 on:** Mar 05, 2008, 03:03:31 PM »

check your idle jet size too. have have a big effect when your jest getting into the throttle. make sure they are clean. i had gunk in mine. i think I'm running .60 or .65. primary. secondary 50 or 55. i,m sure i could fatten them up and get more go.

also make sure your accelerator pump is working.

RN37DD · « **Reply #14 on:** Mar 06, 2008, 12:02:26 PM »

OK this is a weber opened up. the solenoid valve has the idle jet on this carb. most just have a brass holder with the jet at the end pull it out to check that it's clean. the jets at the bottom are main jets. this one was set up with a 150 primary 130 secondary. air jets were 170 primary. 180 secondary. i don't know why it was set up this way but it ran OK. it was on a 20r engine. idle jet primary 45 secondary 50. to small with todays gas. my primary is a .65

79yoda · « **Reply #15 on:** Mar 06, 2008, 12:19:47 PM »

:bowdown:I can't wait to get home to tear my carb down and check everything. Thanks I will let you know what everything is..

79yoda · « **Reply #16 on:** Mar 06, 2008, 05:07:53 PM »

I don't know which side is primary and which side is secondary I checked all of my jets

.. Main jets passenger side- .140 drivers- .130 Idle jets passenger side- .65 drivers side- .50 would these jets make my truck run bad? Thanks for anyhelp that you can give

RN37DD · « **Reply #17 on:** Mar 07, 2008, 09:00:46 AM »

when you operate the carburetor the first throttle plate to open is the primary side. looking at the picture it's the left side. it should run fine with those main jets. and your idle jets should be fine too as long as the are clean. pull them out of the holders and look down the center. should be a clean round hole there. do you know what size you air jets are? they are on the top, don't mix them up, pull them out and make sure the emulsion tubes below them are also clean.

79coyotefrg · « **Reply #18 on:** Mar 07, 2008, 10:01:16 AM »

and the fuel jets are in the bottom of the bowl, 2 small ones you can barely see in that picture

RN37DD · « **Reply #19 on:** Mar 07, 2008, 10:52:06 AM »

true.. but the you know webers in your sleep.

might want to remove the lower section of the power valve and clean it too. water and gunk likes to collect there.

David · « **Reply #20 on:** Mar 18, 2008, 10:18:17 PM »

83 Yota 4x4, local shop says at least $275 to rebuild stock carb

so I'm thinking of ordering a new Weber 34/34 off of ebay. Any pros or cons about this choice and price??

http://cgi.ebay.com/ebaymotors/34-34-Weber-Carburetor-Toyota-Pickup-Truck-4Runner-22R_W0QQitemZ300208362173QQcmdZViewItem?hash=item300208362173

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