carb help, Holley dbl pump.

Keith 944 · 07-28-2012, 01:08 PM

sorry if posting in wrong category but you guys seem best at this. OK my problem. i have an 830 dbl pump on my 11.60 street/strip car. when i shut it off it takes a little open throttle and some turning over to start. i have bolted on my quickfuel 1050 (4150) and it will fire instantly, what is going on????
both carbs are almost identical in that they both have the proform main body. and i bought all quickfuel replacement stuff for the 830. IE. metering blocks and bowls. everything else works fine, it is just frustrating to have to spin it over for a few sec. to start. help, please!

tj310 · 07-28-2012, 05:06 PM

"A little open throttle" opening means too much fuel either leaking , flooding or too rich. Is it hard to start all the time or just on a hot restart ? ---Trevor

BlueOval Ralph · 07-28-2012, 05:46 PM

Power valve leaking, booster dripping or float sticking?

HTMtrSprt · 07-28-2012, 06:37 PM

Or has a plugged or blocked idle air bleed....

Keith 944 · 07-28-2012, 06:59 PM

Quote:

Originally Posted by tj310

"A little open throttle" opening means too much fuel either leaking , flooding or too rich. Is it hard to start all the time or just on a hot restart ? ---Trevor

bad on hot starts.

no power valves. will check floats again but i have the sight glass and they seem ok

quote
.Or has a plugged or blocked idle air bleed....

where exactly is the idle air bleed located?

BlueOval Ralph · 07-28-2012, 07:33 PM

Idle are outside hii speed inside next to the accel pump nozzle

Keith 944 · 07-28-2012, 08:02 PM

Quote:

Originally Posted by BlueOval Ralph

Idle are outside hii speed inside next to the accel pump nozzle

ok, i will blow them out, thanks

NORMAN BARNARD · 07-28-2012, 09:30 PM

Just because it has power valve plugs it doesn't mean the gaskets are not leaking. I've fixed a lot of complaints lately because of gasket failure. To check to see if that's the problem fill the bowls to normal level, remove from motor and put on a carb. Fixture to elevate at least 2 inches. Wipe the bottom of the baseplate to make sure it's dry, let it set for a while, recheck to see if it's leaking, if it is it will becoming out the p/v vac. Port in the base plate. Then proceed to disassemble and repair. Caution: With the holley p/v gaskets it's easy to over tighten them and then they trar apart. Not so if they are after market with the teflon coating

hope this help's.....norm

Keith 944 · 07-28-2012, 09:34 PM

Quote:

Originally Posted by NORMAN BARNARD

Just because it has power valve plugs it doesn't mean the gaskets are not leaking. I've fixed a lot of complaints lately because of gasket failure. To check to see if that's the problem fill the bowls to normal level, remove from motor and put on a carb. Fixture to elevate at least 2 inches. Wipe the bottom of the baseplate to make sure it's dry, let it set for a while, recheck to see if it's leaking, if it is it will becoming out the p/v vac. Port in the base plate. Then proceed to disassemble and repair. Caution: With the holley p/v gaskets it's easy to over tighten them and then they trar apart. Not so if they are after market with the teflon coating

hope this help's.....norm

thanks. thats a good idea, will check that tomorrow.

BTW. i appreciate everyones input, we will fix this issue for sure!

BlueOval Ralph · 07-29-2012, 08:34 AM

When housing Holley power valve plugs make sure that the head of the plug is not hitting. The main body there is a boss that sticks up on the main body, grind the casting flash off the plug can use a belt sander, lath or big file. When you take the carb apart inspect the body if it was hitting you should see it on the plug and main body. If it is hiting it keeps the metering block from fully seating on the main body.

07-28-2012, 01:08 PM	#1
Keith 944 VIP Member Join Date: Feb 2006 Location: Dela-where? Posts: 2,192 Likes: 1,159 Liked 1,874 Times in 576 Posts	carb help, Holley dbl pump. sorry if posting in wrong category but you guys seem best at this. OK my problem. i have an 830 dbl pump on my 11.60 street/strip car. when i shut it off it takes a little open throttle and some turning over to start. i have bolted on my quickfuel 1050 (4150) and it will fire instantly, what is going on???? both carbs are almost identical in that they both have the proform main body. and i bought all quickfuel replacement stuff for the 830. IE. metering blocks and bowls. everything else works fine, it is just frustrating to have to spin it over for a few sec. to start. help, please! __________________ KEITH MAYERS 2-1/2 X somebody Still many X nobody

07-28-2012, 05:06 PM	#2
tj310 Member Join Date: Sep 2009 Location: Dresden On. Canada Posts: 460 Likes: 0 Liked 0 Times in 0 Posts	Re: carb help, Holley dbl pump. "A little open throttle" opening means too much fuel either leaking , flooding or too rich. Is it hard to start all the time or just on a hot restart ? ---Trevor

07-28-2012, 05:46 PM	#3
BlueOval Ralph Banned Join Date: Feb 2008 Posts: 852 Likes: 0 Liked 0 Times in 0 Posts	Re: carb help, Holley dbl pump. Power valve leaking, booster dripping or float sticking?

07-28-2012, 06:37 PM	#4
HTMtrSprt Junior Member Join Date: Oct 2007 Posts: 8 Likes: 0 Liked 0 Times in 0 Posts	Re: carb help, Holley dbl pump. Or has a plugged or blocked idle air bleed....

07-28-2012, 07:33 PM	#6
BlueOval Ralph Banned Join Date: Feb 2008 Posts: 852 Likes: 0 Liked 0 Times in 0 Posts	Re: carb help, Holley dbl pump. Idle are outside hii speed inside next to the accel pump nozzle

07-28-2012, 09:30 PM	#8
NORMAN BARNARD Member Join Date: Mar 2006 Location: EL PASO, TEXAS Posts: 156 Likes: 0 Liked 2 Times in 2 Posts	Re: carb help, Holley dbl pump. Just because it has power valve plugs it doesn't mean the gaskets are not leaking. I've fixed a lot of complaints lately because of gasket failure. To check to see if that's the problem fill the bowls to normal level, remove from motor and put on a carb. Fixture to elevate at least 2 inches. Wipe the bottom of the baseplate to make sure it's dry, let it set for a while, recheck to see if it's leaking, if it is it will becoming out the p/v vac. Port in the base plate. Then proceed to disassemble and repair. Caution: With the holley p/v gaskets it's easy to over tighten them and then they trar apart. Not so if they are after market with the teflon coating hope this help's.....norm

07-29-2012, 08:34 AM	#10
BlueOval Ralph Banned Join Date: Feb 2008 Posts: 852 Likes: 0 Liked 0 Times in 0 Posts	Re: carb help, Holley dbl pump. When housing Holley power valve plugs make sure that the head of the plug is not hitting. The main body there is a boss that sticks up on the main body, grind the casting flash off the plug can use a belt sander, lath or big file. When you take the carb apart inspect the body if it was hitting you should see it on the plug and main body. If it is hiting it keeps the metering block from fully seating on the main body.