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Old 02-25-2007, 11:15 PM   #1
72step
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New Speed Demon Runs Great, Slight Problem?

Well I got my 650 Speed Demon in last week from Jegs, and put it in over the weekend. This morning I dialed it in and man does it run good. Took the truck out for a long 30 mile run and it ran great. I'm suprised at this carb as it seems to use less gas especially when you're not getting into those secondaries. Anyway, I've noticed that it leaks a slight bit of fuel out of the secondary accelerator pump where the pump linkage goes into the carb. It's not pouring out, just enough to make my garage smell like gas, then I stuck my hand where that pump linkage goes in, and I got some gas on my fingers, so I took it off, and now I'm getting ready to call Demon tomorrow. Does anyone have any ideas on what would cause this slight fuel leak besides a defect? I'm running a Edelbrock performer RPM intake and the clearance on the back where that accelerator pump linkage sits, is real close. Would that have to do anything with it? Who knows, any input is appreciated.
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Old 02-25-2007, 11:28 PM   #2
cableguy0
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Re: New Speed Demon Runs Great, Slight Problem?

sounds like a bad accel pump diaphram. i have seen them be bad out of the box nothing to worry about just get another one only a few bucks.i dunno if it would even be worth the wait to get one from demon i would just go get one myself
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Old 02-25-2007, 11:35 PM   #3
72step
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Re: New Speed Demon Runs Great, Slight Problem?

Are they cheap? How hard are they to install? I'd assume it's just remove those 4 phillips screws and there it is right? I'll just call Demon no matter if they take a while, I'd have to order the part anyway as here in NM there's only one BG dealer, and he's pretty worthless anyway. Maybe BG will just ship me the part right away no questions and I can get it in next weekend.
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Old 02-26-2007, 12:01 AM   #4
cableguy0
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Re: New Speed Demon Runs Great, Slight Problem?

yea just those 4 screws. shouldnt be more than a couple dollars for the diaphram
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