black smoke black smoke - The 1947 - Present Chevrolet & GMC Truck Message Board Network

perrosinpata@aol.com · 02-27-2003, 02:22 AM

I am running rich and have a edelb 1405 with an electric choke any suggestions?

68 Suburban · 02-27-2003, 02:39 AM

Is your engine basically stock? I had to detune my 1406 carb two steps to get it not to be rich. You can get the kit for about $30. It is real easy to do.

Now I am getting 15+ miles per gallon and pass the emissions with flying colors.

Good luck

perrosinpata@aol.com · 02-27-2003, 02:53 AM

how do you de tune and where can i find the kit

68 Suburban · 02-27-2003, 02:58 AM

With your carb you should have gotten a booklet. In that booklet there is a chart that shows you what needles and jets you need to tune you carb.

You can get the kit from either Jegs or Summit.

Edelbrock carbs are real easy to work with. If you need to change the jets, it might take 20 minutes. Needles take less than 5 minutes to change.

68 Suburban · 02-27-2003, 03:01 AM

The chart in the booklet will look like this:

My carb is now tuned at the number "7" spot on the chart. I originally went with the number '12' spot, but it was to lean.

68 Suburban · 02-27-2003, 03:05 AM

Check out this page for the kit you want. I guess the kit you need is $20 more than the one I needed

http://www.jegs.com/cgi-bin/ncommerc...98&prmenbr=361

O'l Buck · 02-27-2003, 03:18 AM

I was hoping we were talking about diesels!!!!!

O'l Buck · 02-27-2003, 04:06 AM

I'll just put it this way.....any diesel I ever had, automotive or semi truck rolled black smoke like a housefire........Who ever would have dreamed that a screwdriver could create so much torque !!!!!!

Blazer1970 · 02-27-2003, 09:09 AM

Is the choke opening?

cableguy0 · 02-27-2003, 09:16 AM

r u running a pressure regulator.even with a stock pump u need one those edelbrocks dont like more than 5.5 psi and ur stock pump is probably running somewhere between 6 and 9 psi.

02-27-2003, 02:22 AM	#1
perrosinpata@aol.com Registered User Join Date: Jan 2002 Location: Arlington TN Posts: 327	black smoke black smoke I am running rich and have a edelb 1405 with an electric choke any suggestions?

02-27-2003, 03:18 AM	#7
O'l Buck Recovering Truck Driver Join Date: Mar 2002 Location: Orleans, NE USA Posts: 1,883	I was hoping we were talking about diesels!!!!! __________________ 67 K-20 350, SM465, Eaton rear, 4.56 no spin option 00 Dodge 2500 4x4, 24V cummins, 5 speed Chad South Central Nebraska

02-27-2003, 04:06 AM	#8
O'l Buck Recovering Truck Driver Join Date: Mar 2002 Location: Orleans, NE USA Posts: 1,883	I'll just put it this way.....any diesel I ever had, automotive or semi truck rolled black smoke like a housefire........Who ever would have dreamed that a screwdriver could create so much torque !!!!!! __________________ 67 K-20 350, SM465, Eaton rear, 4.56 no spin option 00 Dodge 2500 4x4, 24V cummins, 5 speed Chad South Central Nebraska

02-27-2003, 09:09 AM	#9
Blazer1970 Registered User Join Date: Dec 1999 Location: Old Mission, MI, USA Posts: 2,510	Is the choke opening? __________________ Tim

02-27-2003, 09:16 AM	#10
cableguy0 Senior Member Join Date: Apr 2000 Location: Delta,Pa Posts: 14,950	r u running a pressure regulator.even with a stock pump u need one those edelbrocks dont like more than 5.5 psi and ur stock pump is probably running somewhere between 6 and 9 psi. __________________ Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member.

02-27-2003, 02:39 AM	#2
68 Suburban Registered User Join Date: Oct 2000 Location: From Chicago, Live in Phoenix, AZ Posts: 6,802	Is your engine basically stock? I had to detune my 1406 carb two steps to get it not to be rich. You can get the kit for about $30. It is real easy to do. Now I am getting 15+ miles per gallon and pass the emissions with flying colors. Good luck

02-27-2003, 02:53 AM	#3
perrosinpata@aol.com Registered User Join Date: Jan 2002 Location: Arlington TN Posts: 327	how do you de tune and where can i find the kit

02-27-2003, 02:58 AM	#4
68 Suburban Registered User Join Date: Oct 2000 Location: From Chicago, Live in Phoenix, AZ Posts: 6,802	With your carb you should have gotten a booklet. In that booklet there is a chart that shows you what needles and jets you need to tune you carb. You can get the kit from either Jegs or Summit. Edelbrock carbs are real easy to work with. If you need to change the jets, it might take 20 minutes. Needles take less than 5 minutes to change.

02-27-2003, 03:01 AM	#5
68 Suburban Registered User Join Date: Oct 2000 Location: From Chicago, Live in Phoenix, AZ Posts: 6,802	The chart in the booklet will look like this: My carb is now tuned at the number "7" spot on the chart. I originally went with the number '12' spot, but it was to lean.

02-27-2003, 03:05 AM	#6
68 Suburban Registered User Join Date: Oct 2000 Location: From Chicago, Live in Phoenix, AZ Posts: 6,802	Check out this page for the kit you want. I guess the kit you need is $20 more than the one I needed http://www.jegs.com/cgi-bin/ncommerc...98&prmenbr=361



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