Edelbrock help

[dan73]

Changed to this carb recently. ran flawless for about a week. now it won't start with out priming after it sets a few hrs.
carter pump. elect choke

 

[Bronco73]

Try a spacer plate to insulate the base of the carb from the heat.

 

[PaveBronco]

I made one from wood, worked pretty well, wood doesnt conduct heat, but sure can burn, if you're in the middle of the woods trying to start a fire with toilet paper, gas and the coil wire...dont ask me how I know..

 

[707Bronk]

Was it brand new? Recently rebuilt?

What model edelbrock?

 

[jckkys]

I doubt heat is the issue in the dead of winter. The AFB has no place for fuel to leak out of the bowls like a Holley. I know that winter blend gasoline has higher volatility so it boils at a lower temperature, but not enough for all the fuel to evaporate in a few hours. It's been in the eighties here in Tucson lately and we have the same gas blend. Now, my AFB starts right up after sitting for 4-5 days. In the summer when it's often over 110 I have to crank the engine for several seconds to fill the bowls, after sitting over night. I do use 3 of the 1/4" thick insulated carburetor mounting gaskets. They help but, they're not a cure all.
I think there's something else going on. After driving it home, wait a few hours and take the top off the AFB before you try to crank it. See if the bowls still have any gas in them.

 

[dan73]

Carb

Its a used 1406 it was twenty degree's here this morning. still wouldn't start. my fuel pump is on a switch with a relay. i can run the pump three or four minutes still won't start. hit it with a little carb cleaner it fires right up and runs perfect

 

[treihesse]

Choke issue?

 

[dan73]

That's what Im thinking but can't understand why it fires up when primed

 

[DuctTape]

Have you checked the jets and rods? Maybe there is a burr or something and just needs a little help to get going. If it was me I'd pull it off and check it out.

I have the 1806 (which I believe is almost identical to 1406) and it is really easy to take off the top plate and check everything out. Only thing that is a bit of a pita is the tiny clips.

 

[broncnaz]

Check your float level. Its probably to low and fuel is not reaching the acclerator pump so cold starts are tough. Ive had this happen on a couple of edlebrocks. Seems somehow the float level changes and the engine gets hard to start.
Edelbrocks are more susceptable to heat soak as the fuel bowl is directly on top of the intake mounting surface. unlike holley's where there fuel bowls have airspace underneath them.
But I dont thinkk its really a heat soak issue with the cold weather but it could be.

 

[Fairlane514]

+2 on the float level

 

[jckkys]

Carb cleaner is more volatile than any gasoline, so what you're doing is creating a richer mixture temporarily with the carb cleaner plus gasoline. The choke is supposed to be doing that. So whether the fast idle is inadequate or the choke plate isn't closing. Both need to happen during cold starts. The cap or choke thermostat is marked lean with an arrow indicating counterclockwise. You will need to turn it clockwise or richer. Oddly Holleys and Ford carbs are the opposite. Edelbrock has a Performer Owner's Manuel on their web site that has all the AFB set up instructions.

 

[dan73]

Ok thanks I'll check the float this Wk end. makes since because i can't see anything spraying when i look down it. it only pulls strong to about 3500 rpm too

 

[joshnjulie1]

YEAHHHHH. Another 1406 issue. Damn these. If you figure out something special let me know. Mine is out to get me and we have a rough working relationship right now in the garage. Just when I thought I got it figured out, now it like to take its time cranking over and starting.

 

[707Bronk]

You positive that fuel is making it to the carb?

If so, then I would do like others said and make sure your choke is working, but it is, just pull the carb and rebuild it.

Sometimes people will use a small screen filters at the inlet that can get plugged. Also, there are a couple small screens inside that can get clogged.

Getting the floats right can be a pain.

Whenever mine starts giving me trouble, I just pull it and rebuild it. Its cheap and easy.

 

[DuctTape]

it only pulls strong to about 3500 rpm too

Hmm makes me suspect flow restriction somewhere. Iirc the secondary circuit is separate from primary jets, no?

Maybe see what happens above 3500 with the secondaries open?

But again I bet all in all you'll spend the least time with it if you just pull it apart.

 

[dan73]

I'll pull it apart tomorrow

 

[JSmall]

My 1406 is driving me to EFI...and drinking

 

[viper982]

I know that I would love to smash my 1406 but a new carb costs too much...

 

[badmuttstang]

I have never had any major issues with my 1406 carbs they did clog up about every two years and I put that to crappy gas. Now I'm running a 1805 and really like it ran great out of the box twicked it a little and it will scream. As others have stated sounds like fuel restriction some where.