720newbie Posted March 6, 2014 Report Share Posted March 6, 2014 So i have a 84 720 4x4 with the Z24 motor. It came with a weber 32/36 that i just rebuilt and 15 minutes ago put it on my truck and it wont stay running unless the carb choke is shut all the way. I adjusted my floats to 35mm and 51mm and it sounds like the primary side of the carb is spitting gas. Im new to this carb stuff and any help would be gratefully appreciated. My timing is also advanced to 12* BTDC which i read is best for webers if im wrong someone let me know Quote Link to comment
ggzilla Posted March 6, 2014 Report Share Posted March 6, 2014 12° can damage the Z-series engine. What do you mean floats? There is one float set for the 32/36 carb. Should never drop below 40mm. Quote Link to comment
720newbie Posted March 6, 2014 Author Report Share Posted March 6, 2014 ya the fuel bowl floats is what i adjusted and thats good to know about the timing Quote Link to comment
720newbie Posted March 6, 2014 Author Report Share Posted March 6, 2014 so do i need to readjust my timing back to 3* BTDC and go from there Quote Link to comment
ggzilla Posted March 6, 2014 Report Share Posted March 6, 2014 Not necessarily. Depending on the production variation of your specific distributor, it may not ruin the engine. Just reduces power at rpm I would adjust the float to spec. All the 32/36 rebuild kits I've used say 40mm. Quote Link to comment
datzenmike Posted March 6, 2014 Report Share Posted March 6, 2014 so do i need to readjust my timing back to 3* BTDC and go from there Definitely set to factory timing specs of 3 degrees. This may solve your problem. Quote Link to comment
720newbie Posted March 6, 2014 Author Report Share Posted March 6, 2014 I am definately thinking its a float problem. ill keep yall posted once i take the carb top off and see how much fuel is in the bottom of the bowl Quote Link to comment
720newbie Posted March 6, 2014 Author Report Share Posted March 6, 2014 ok guys... so dont laugh at this too much but my idle air jets were closed (put new O rings and forgot to open them back up) so it wouldn't idle unless choked. Once i opened those up she runs beautiful but still have some fine tuning cause it bogs down a little bit when really getting on it. Im gonna get a jet kit and re jet it next Quote Link to comment
datzenmike Posted March 6, 2014 Report Share Posted March 6, 2014 Definitely set to factory timing specs of 3 degrees. This may solve your problem. You didn't say if you fixed this. Too much advance will make the motor fight itself. Quote Link to comment
720newbie Posted March 7, 2014 Author Report Share Posted March 7, 2014 ya its running pretty good but im thinking im gonna bring the timing back down. My motor is completely rebuilt .040 over with all new piston,rings,rods and bearings and seals and i would hate to mess it up over the timing being too advanced. Do you know how much your idle air jets are supposed to be turned out? I have mine out 1 full turn so far Quote Link to comment
ggzilla Posted March 7, 2014 Report Share Posted March 7, 2014 Idle air jets are non-adjustable. Do you mean idle mixture adjustment screws? Green arrow points to idle mixture adjustment screw Quote Link to comment
720newbie Posted March 7, 2014 Author Report Share Posted March 7, 2014 1 is Pump Delivery Valve Assy 2 is primary air corrector jet and primary emulsioning tube 3 is secondary Air corrector jet and secondary emulsioning tube 4 is idle jet holder 4b is primary idle jet 5 is idle jet holder 5b secondary idle jet 6 is primary main jet 7 is secondary main jet this is like my carb and mine are adjustable Quote Link to comment
ggzilla Posted March 8, 2014 Report Share Posted March 8, 2014 Idle jets are supposed to be screwed in all the way, then the mixture screw adjusted. Quote Link to comment
720newbie Posted March 10, 2014 Author Report Share Posted March 10, 2014 Ok awesome thanks guys Quote Link to comment
720newbie Posted March 11, 2014 Author Report Share Posted March 11, 2014 http://www.classicinlines.com/WeberTune.asp check this out guys this is where I read that timing needs to be 12° advanced. Quote Link to comment
datzenmike Posted March 11, 2014 Report Share Posted March 11, 2014 A second post on this??????? http://community.ratsun.net/topic/61093-true-or-false/ Quote Link to comment
720newbie Posted March 11, 2014 Author Report Share Posted March 11, 2014 Ya sorry didn't realize that Quote Link to comment
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