Edelbrock Quad
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Edelbrock Quad
Posted: April 04 2008 05:56 PM
 
joe kenna (aka My_33) [ View ] [ Email ] [ Car Ads ] [ Blogs ]
Dayton, Texas
 
Ok,

After 2 or 3 days of the rod sitting still in the garage the gas drains out of the carb making my sb. chevy sound like a chrysler spinning over for 10 minutes to get fuel back up to the carb. Besides getting rid of the carb any ideas???

Thanks
 
 
Comments
 
Posted by Starfire  -  04/04/2008 06:31 PM
Yup! Time to buy a rebuild kit.
Starfire [ View ] [ Email ] [ Blogs ] [ Car Ads ] Weimar, Texas
 
Posted by JoeP  -  04/04/2008 09:50 PM
had the same problem with an edelbrock carb, called their tech line was told that there is nothing wrong with the carb, they told me to check the fuel pump. Switched to a Holley guess what doesn't happen anymore. I know many people use Edelbrock without problems but I never had any luck with them.
Joe [ View ] [ Email ] [ Blogs ] [ Car Ads ] Somerset, New Jersey
 
Posted by aosborn  -  04/04/2008 11:05 PM
1936 Dodge Pickup, all steel body, Dodge 360 engine, 727 Trans, mustang front end, dodge rear end. 10,000 since frame off build.Power windows and CD player. No rust or damage. paint looks good but has a few chips and scratches. Email me if you want more pictures.
aosborn [ View ] [ Email ] [ Blogs ] [ Car Ads ] Olympia, Washington
 
Posted by Starfire  -  04/05/2008 12:19 AM
Edelbrock got into the carburetor business by buying Carter. The basic Carter design has not been altered to any extent if at all. A very common problem with all carbs based upon the "Quadra-Junk" design is a sticking or damaged inlet check valve. Which is nothing but a ball bearing with small weight which opens with fuel pump pressure. If the check valve is stuck open fuel will drain out of the carburetor back to the fuel pump and into bypass fuel line. A simple rebuild should fix the problem as there is a new check valve in each kit and any rebuild cleaning (a few minutes in a tank of Berryman Chemtool) should remove any varnishes which may have caused the valve to stick.


But before you do a rebuild, why do you think fuel is draining from the carb? Is it that or possibly the choke is not being set on a cold start or the choke is improperly adjusted.
Starfire [ View ] [ Email ] [ Blogs ] [ Car Ads ] Weimar, Texas
 
Posted by mcduff  -  04/05/2008 08:12 AM
Joe, I'll let all the experts tell you why, but I had the same problem with my dual quad set up. I sold it last winter and went with a single 4 barrel and I still have the same problem but it is like 5-7 days for me. I know if the car has sat for a week or so without running that I will have the same problem of no gas in the carb. I run a Holley mechanical pump so no priming like having an electric that you can run to get the gas there. All I do is give it a shot of starting fluid to get it to fire to run the mechanical like crazy. I'm not smart enough to rebuild, but since it has done it out of the box, I didn't think it would help. Now I just have to deal with the Endura Shine issues.
mcduff [ View ] [ Email ] [ Blogs ] [ Car Ads ] Painesville, Ohio
 
Posted by Crazyhorse Rod Shop  -  04/05/2008 08:30 AM
first . put a phenolic carb spacer on it. they are bad about loosing bowl fuel to heat after shut down. easiest fix is an electric pump.
dont poke the porchdog........he bites [ View ] [ Email ] [ Blogs ] [ Car Ads ] BLUFF DALE, Texas Charter Member since March 2003
 
Posted by BigAlBre  -  04/05/2008 08:45 AM
I went through the exact same thing with a brand new carb.... I switched to a brand new holley... then had to have it rebuilt... I think Shine is right... electric fuel pump is the easiest solution....
Big Al sittin back in paradise. [ View ] [ Email ] [ Blogs ] [ Car Ads ] St Pete Beach, Florida Charter Member since June 1999
 
Posted by Crazyhorse Rod Shop  -  04/05/2008 08:55 AM
fuel enters the carb on top. i does not drain back . it evaps at shut down and when setting for long periods. aluminum intakes suck heat from the block and heads and overheat the carb.
dont poke the porchdog........he bites [ View ] [ Email ] [ Blogs ] [ Car Ads ] BLUFF DALE, Texas Charter Member since March 2003
 
Posted by My_33  -  04/05/2008 01:56 PM
I have never had this problem with Holley carb at all... Shine your points are very good ones and I believe your probably right on the heat, Starfire choke operates fine, after 3 days there is NO fuel in the carb, I can tell about how long it takes the fuel pump to get gas to the carb almost each time this happens... Eventually I think I'm gonna try a Holley carb and see what happens...

Thanks guys!!!
My_33 [ View ] [ Email ] [ Blogs ] [ Car Ads ] Dayton, Texas
 
Posted by aosborn  -  04/06/2008 03:43 AM
If it is boiling fuel in the float bowl, you can see it happen when you shut off the car after it has had plenty of time to warm up. Look down the venturies and you will usually see and/or hear it boiling. Listen to the float bowl air vent. It is a fairly common problem, but usually only when the weather gets pretty warm, or you have excessive underhood heat, usually both. The phenolic spacer is a good idea, but a couple of aluminum plates sandwiched between carb base gaskets works well also. I really don't see how adding an electric fuel pump will help the situation if boiling fuel in the carb is indeed the problem, that will just make it easier to refill the float bowl at the next startup. With this type of problem hot restarts are usually tough as well. Holley carbs dissipate heat in the float bowls better by design because the float bowls are out in the air, and do not have as much surface area directly on top of the manifold like the Edelbrock/ Carter AFB style carbs.
aosborn [ View ] [ Email ] [ Blogs ] [ Car Ads ] Olympia, Washington
 
Posted by Crazyhorse Rod Shop  -  04/06/2008 09:01 AM
it takes an electric pump about 10 secs to fill the bowl. much better than cranking it to death. aluminum spacers will do nothing but transfer heat . you have to isolate the carb from the heat source . thats what the phenolic spacer is for. most times the spacer alone will cure the problem.
dont poke the porchdog........he bites [ View ] [ Email ] [ Blogs ] [ Car Ads ] BLUFF DALE, Texas Charter Member since March 2003
 
Posted by aosborn  -  04/06/2008 12:13 PM
With the failure rate of an electric fuel pump, especially units mounted outside the tank, I would much rather solve the problem then find a better way to work around it. Phenolic spacers are ok except they are prone to warpage (remember the Carter AVS carburetor?), that is why I use a couple of aluminum plates separated by gasket material, plus you can oversize the plates to act as a larger heat sink if you like. Moroso used to sell a kit for this, but I make my own.
aosborn [ View ] [ Email ] [ Blogs ] [ Car Ads ] Olympia, Washington
 
Posted by amswuod1  -  04/06/2008 08:54 PM
Heat isolation by using a phenolic spacer is an excellent choice to reduce fuel evaporation from engine block heat absorption after shutdown.

Also, if you run an electric fan for engine cooling, you may want to try letting it run for awhile after shutdown to cool the block and dissapate that heat away from the carb and intake.

Bob D.
amswuod1 [ View ] [ Email ] [ Blogs ] [ Car Ads ] Union, Kentucky Charter Member since July 2006
 
Posted by dixie  -  04/06/2008 09:10 PM
I RUN A ELB ON MY BBC WITH A ELECT PUMP BEHIND IT CRANKS FIRST TIME EVERY TIME AFTER SITTING 4 WEEKS. BUT I WOULD TRADE IT FOR A HOLLEY, SHINE FINALLY GOT THE 600 HOLLEY FIXED GOING TO PUT IT ON NEXT WEEK.


DIXIE---PLAYING IN THE RAIN---W & R
jim grace [ View ] [ Email ] [ Blogs ] [ Car Ads ] dade city, Florida Charter Member since January 2006
 
Posted by Crazyhorse Rod Shop  -  04/07/2008 09:55 AM
just remember dixie that at 600 your on the lower side of cfm. will be a bear red light to red light but would suffer on the big end.
dont poke the porchdog........he bites [ View ] [ Email ] [ Blogs ] [ Car Ads ] BLUFF DALE, Texas Charter Member since March 2003
 
Posted by ol bear  -  04/07/2008 10:27 AM
USING MY NAME IN VAIN THERE SHINE ,,,,,,PRETTY FUNNY ,,,, LES AKA OL BEAR
OL BEAR [ View ] [ Email ] [ Blogs ] [ Car Ads ] crown point, Indiana
 
Posted by Crazyhorse Rod Shop  -  04/07/2008 11:11 AM
aside from a block of wood the phenolic spacer is the only way to isolate from the intake heat.
dont poke the porchdog........he bites [ View ] [ Email ] [ Blogs ] [ Car Ads ] BLUFF DALE, Texas Charter Member since March 2003
 
Posted by bigdude  -  04/07/2008 02:59 PM
Make those alum plates big enough and it might fly. I have seen those before but they would absorb more heat than dissipate it seems. I put a phenolic spacer on all my builds and chrysler used to put a fiber one on their engines.
resident know it all [ View ] [ Email ] [ Blogs ] [ Car Ads ] Three Rivers, Michigan Charter Member since January 2004
 
Posted by TYCHOOCHOO  -  04/07/2008 04:36 PM
I did exactly what Shine said with the PHENOLIC SPACER awhile back when I was having a problem and it fixed it with no problem since then. The problem is the gas perks and dries out. I start my car every 5 weeks when I go home during the winter and ilt starts within 12 to 15 seconds.
TYCHOOCHOO [ View ] [ Email ] [ Blogs ] [ Car Ads ] MT. SINAI, New York
 
Posted by amy14760yahoocom  -  04/07/2008 06:42 PM
joe it sounds like there are alot of good idea's from these good folks . but i do have to agree with shine . i was haveing a simular trouble he suggested the fiber spacer it helped alot but shine also suggested a cheap napa fuel pump i used it in line with mechanical pump . joe when car would sit for any time all i had to do is hit the hidden switch for the electric pump count to 5 and shut off . pump pedal twice and bang car would fire right off . hey guy's bet you thought i couldn't count that high ? fooled ya all . any way's the pump sell's at napa for around 34.00 dollars and when it is on all you here is a mild click . make sure you get the higher psi . good luck and happy rodding bob in ny
amy14760yahoocom [ View ] [ Email ] [ Blogs ] [ Car Ads ] allegany, New York Charter Member since July 2005
 
Posted by Crazyhorse Rod Shop  -  04/07/2008 07:04 PM
keep in mind the higher pump can only be used for priming. it is a 9 lb and will bleed past needle and seat. the 5 lb can be run all the time.
dont poke the porchdog........he bites [ View ] [ Email ] [ Blogs ] [ Car Ads ] BLUFF DALE, Texas Charter Member since March 2003
 
Posted by My_33  -  04/07/2008 08:02 PM
All good idea's as usual... I agree Bob with Shine as well... My engine compartment on the 33 has no ventilation, running a mechanical fan only lot's of heat in there after shut-down... I have several projects ahead for the car that require pulling the whole frront end off the car... Once I get started it don't take me long to get it back together, right now I am enjoying the weather here and cannot keep my foot out of the car... Shine, what is wrong with your web site when I try to open some of your links it's hosed????
My_33 [ View ] [ Email ] [ Blogs ] [ Car Ads ] Dayton, Texas
 
Posted by Crazyhorse Rod Shop  -  04/08/2008 07:39 AM
trying to build a new one but i'm slow.
dont poke the porchdog........he bites [ View ] [ Email ] [ Blogs ] [ Car Ads ] BLUFF DALE, Texas Charter Member since March 2003
 
Posted by dale  -  04/08/2008 09:38 AM
I agree with Shine. The bottom line is if you let your ride set a while without running, the carb may loose prime. The best way to fix the problem is an electric fuel pump to prime the carb before starting.
dale [ View ] [ Email ] [ Blogs ] [ Car Ads ] Dekalb, Illinois
 
Posted by jimmothershead  -  04/09/2008 10:13 AM
What is your pump pressure?
Jim [ View ] [ Email ] [ Blogs ] [ Car Ads ] Huntingtown, Maryland
 
Posted by garyconti  -  04/09/2008 10:25 AM
Anyone with an edelbrock endura shine duel quad setup having a problem with yellow bleading from the carbs
garyconti [ View ] [ Email ] [ Blogs ] [ Car Ads ] Pembroke Pines, Florida
 
Posted by dalewebber  -  04/09/2008 05:37 PM
edelbrock makes the heat spacer for this carb works wonders they also make a great fuel injection system you might concider
dalewebber [ View ] [ Email ] [ Blogs ] [ Car Ads ] Lake Havasu City, Arizona
 
Posted by 56chevytruck  -  04/10/2008 02:32 PM
Been there done that last year. I put a 2 inch phenolic spacer and my issues are resolved. I have not gone electric fuel but will in the near future.
Say What... [ View ] [ Email ] [ Blogs ] [ Car Ads ] Midlothian, Texas
 
Posted by Tweety37  -  04/11/2008 12:54 PM
I have the same problem with my Edelbrock equipped sbc 350 and it does have the spacer. The Edl 500 cfm is new. I'm running a Holley "red" electric pump with no mechanical pump. After sitting for 4 or more days it loses prime. I just switch on the ignition and wait about 15 seconds, then it fires right up.

BTW. The Holley pump has been in the car for almost 10 years with no problems, but I do carry a brand new one in the trunk, just in case.
Tweety37 [ View ] [ Email ] [ Blogs ] [ Car Ads ] Bismarck, North Dakota
 
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