Carb issues w/BB Chevy w/BDS blower
Hi. hope someone is willing to help. I'm having trouble with the idle on my ride. It's a '69 El Camino with a 468 and it has a BDS 8-series blower with two Holly DP's.
I live in Ft. Lauderdale and am trying to get the car ready to cruise again. It's too hot to ride in the summer down here without A/C, so the car sits for long periods (I frequently start and run around the block, but probably not often enough).
I've read and heard that the ethanol in gas has really screwed with a lot of "old school" rides so i switched to an alcohol free fuel called "Rec-90". I was using 93 octane, with Stabil while car was stored. I also learned that ethanol attracts water in the tanks of stored vehicles. I mix VP C13 race fuel to fatten up the mix about 1 to 4.
Before I made the switch to the "Rec-90" the idle was a little rough/uneven and on the low side (not too bad, still very drivable). I often had this problem after getting the car out of storage, but it always cleared up with some driving and fresh fuel. Normally the curb idle is about 900-950 and about 800 when in gear. right where it should be.
After the switch and a few spins around the neighborhood (with a few mild hole-shots to clear out the gunk), the car stalled out when I came to a stop to turn around. It easily restarted, backfired, and started again no problem. Shortly after, the idle speed climbed to around 1500 and won't come back down. Other than the fast idle the car seems to run great.
Does anyone know what the issue might be? I'm a carpenter by trade and my mechanic is out of town for the holidays. I would like to be able to drive it while I have some time off myself. I would appreciate some advice/help, if someone is willing to offer it.
Thanks in Advance,