Thread: carb is whacko!! no wonder it ran like crap

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no wonder my car idled so sparatically. i took the carb off flipped it over and where the idle circuit holes are one butterfly uncovers more of one hole then the other as in they are not even, no wonder it would jump from 14-1800 rpm's so radically how the heck do i fix this!!!!!!?????????????? dave tech some help me todays the last race of the season i got off work at 4am worked on car till 5:24 gotta wake up at 8 have some answers please! ........scooter!!!!!!

Ummm...... Temp fix, but could you slightly bend the throttle blade that is low so that it covers the hole same as the high blade????? Not sure, man. I sure as heck am not a carb expert. Hopefully someone who is is up by now.......

loosen the screws that holds the blades in place and tap on each one until you get then even, tighten screws. they should move around. i know im no dave or tech but this should help.

Be sure to back your idle speed screw off so the plates will close completely when you're setting them, and tighten the plate screws with the throttle completely closed. This assures proper alignment.

i went and picked up a pro-form baseplate and the races got cancelled

Ha! that's the way she goes sometimes, ain't it?

cancelled i thought post-poned is what really happened so it gives me a fire under my tush to get it running good for the races its acting weird still it will be idling at about 1,00 rpm's just fine then a minute later it will just start climbing to 2,000 rpm sprayed wd-40 around the base to see if it had a vacum leak it didnt so wtf!?!?!?!?!?

..............scooter

Originally posted by gassersrule_196
cancelled i thought post-poned is what really happened so it gives me a fire under my tush to get it running good for the races its acting weird still it will be idling at about 1,00 rpm's just fine then a minute later it will just start climbing to 2,000 rpm sprayed wd-40 around the base to see if it had a vacum leak it didnt so wtf!?!?!?!?!?

..............scooter

if its not a vac. leak then it sounds like its still in that base plate. sounds like the linkge might be holding the butterflys open a little. have you taken the linkage off of the carb., from the accl. to see if it would idle down that away? . how do you get it to idle down, by holding it closed with your hand? just some thoughts.

Bent throttle shaft? Some fast gouges and no throttle stop or a little outa whack and twistomatic.or just months and months of gettin floored and its got a little twist to it ?Did u use the same butterfly shaft or does that come new in a base plate?

no the pro-form base plate is a complete billet base plate. i got it to idle at 900-1,000 rpms now where it should be not at 1,500+ a little off idle hesitationg oing to playe around with cams and if they dont do anything ill put the 50 cc acc. pump back on........scooter i panic easy

also going to drain all the coolant and put in a 160* or 180* degree thermostat havent decided yet. have the 160* probably going to use it. changed the oil smell like gas was dirty as heck. carb was running rich for a while thats probably why.........scooter

recheck your timming on the engine then back off the timming about 4 degrees and see if that helps. too much will do that to the idle and\or there may be something broke or stuck in the dist
dave

Hey Dave,

Good tip, but check the date. This post is from 3.5 years ago. I think he has it solved by now

Pat

yup switchin to a tunnel ram anyhow