231 buick 2 brl carb adjustments

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231 buick 2 brl carb adjustments

Postby thehawk79 » Thu Jul 14, 2011 10:20 pm

hi all i just picked up a 1979 buick skyhawk. it has the orginal buick 231 buick v-6 with all stock intake,carb ect. this includes all emmisions equipment ect. i bought it in running driving condition. well at first i thought a tune up was in order because it would die after runni9ng a couple minutes and put into gear. it would restart right up and would do same until i got it going under light load. then it was fine driving ect. i put in new cap,rotor,wires,plugs,fuel filter,air filter,pvc filter and EGR valve. now it wont stay ideling at all in park , even when no load is on it. i cant see or hear any vacume leaks. driving me nuts. im going to try a new gasket between the carb and manifold . am i going in the right direction?. keep hearing people telling me it is a vacume leak but cant figure out where if at all. all ideas and advice always wecome and acknolaged. paul o :bang:
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Re: 231 buick 2 brl carb adjustments

Postby monza75tc » Fri Jul 15, 2011 10:12 pm

Take some carb cleaner and spray around the hoses that might be leaking, also base of the carb. Prob needs the carb rebuilt. Good Luck

Dick
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Re: 231 buick 2 brl carb adjustments

Postby thehawk79 » Sat Jul 16, 2011 11:45 pm

thanks dick for the advice and ideas. i'll check it out tommorrow and see what happens from there. paul o
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Re: 231 buick 2 brl carb adjustments

Postby marco_1978_spyder » Sun Jul 17, 2011 9:29 am

Think you may have bumped the distributor setting (timing) when you installed the cap and rotor?
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Re: 231 buick 2 brl carb adjustments

Postby cammerjeff » Sun Jul 17, 2011 11:03 am

I usually check to see if it is a vacuum leak by seeing if the engine picks up when you shut the choke or put your hand over the carb to shut off the airflow if it doesn't have a choke. (it should stumble and die if there isn't a vacuum leak) If you confirm a leak, then do as Dick suggested to try and narrow it down. But it is always a good dea to replace all the old vacuum lines on a 30+ year old car, they will only cause you trouble 1 at a time.
The carb base gasket can also cause alot of come and go issues if it hardens and starts to leak.
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Re: 231 buick 2 brl carb adjustments

Postby thehawk79 » Mon Jul 18, 2011 8:07 am

im going to try all the ideas you have as well. i do have a carb rebuild kit coming with in the next couple days and hopfully can use some of that to get it going again. its hard with no help around to brainstorm with. not alot of people know the older cars in my neck of the woods any more so getting someone here to help hear it makes it a trick. thanks for all the ideas and help here. oh i got a shop manual on cd too. so it gives me all the numbers to work with. paul o
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Re: 231 buick 2 brl carb adjustments

Postby thehawk79 » Tue Aug 02, 2011 7:12 pm

well guys and gals i got the carb rebuilt . found out the float was bent up bad. and the carb base gasket was bad too. they got got it running now. still needs fine tuning. right now its got a littel hesitation in it while doing a steady 60 mph. and its doggy coming off a stop sign too . i figure it needs to be leaned out and the idel brought up a bit. i was told that the carb was set with in stock adjustments but it feels like its got more to give . so i'll get ahold of the guy that did it for me and see if we can adjust it better from there. thanks for everything paul o
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