ok so 84 t/a 5.0L had orignal q-jet carb on it and ran fine for 12k. few weeks ago it started leakin and running like pure ****. so i figure replace before it breaks completly and go out and buy a brand spankin new edelbrock performer 600cfm kit and what not to install so i get everything in and it started. but still ran like pure hunk o-****. i shut it off started one more time and shut it off again and it wont start again. new plugs,new coil,new carb gaskets,new carb, wtf why wont it work. got fuel pressure got spark has compression. i dont get it please help

 

Sorry to hear about your Edelbrock purchase.

Did you replace the distributor while you were at it?

If not too late, return the Edelbrock and get your money back. Use the money to get a rebuilt q-jet.

 

stores policy is usually once its installed its yours unless there is a defect........... did you check all your vacuum connections? and is it possible you flooded it?

 

Too funny....But too true.
I was given an Edelbrock from a workmate a few months ago.
I tried saying no but he insisted I try it.
I held it for a few weeks and took it back telling him that I'd have to change more than I wanted to make it work. because it's not a CCC.
I told him I'd just sell it.
That prompted him to actually want it back to sell himself.

Why downgrade?

Anyways back to the issue...
Have you been successful starting it with starter fluid to eliminate other possibilities?
How did you determine the fuel starvation?
Will it start pouring fuel down the carb?

 

Was it a CCC? Is it possible the ECM isn't "reading" the carb--(idle,throttle position etc?)

 

CCC...computer controlled carburetor I believe.
Qjets are CCC but maybe not all.
I saw no way to hook all that stuff up on the edelbrock. TPS etc.
And seeing as the ecm and all the other stuff control the workings I did not want to change the dissy etc for a non CCC.
I could be wrong about it all.
However it looked to be too much hassle for a downgrade according to all I had read about it.

 

It isn't that hard, guys.

The original q-jet was computer controlled. The Edelbrock carb is not and cannot be computer controlled.

Without a computer controlled carb, you need a non-computer controlled distributor, commonly called vacuum/mechanical advance. But, even without the computer inputs, the engine should start with a computer distributor and non-computer carb.

My recommendation stands - get rid of the Edelbrock and fix or replace the computer controlled q-jet.

 

ok so yes i did try using starting fluid and nothin. i have not touched the dist cuz the car work before so theres no need. this was supposed to be minor fix. all vacums are good, fuel presurre is good its got fuel at the carb and it is flooding it cuz it wont start so i still have no idea. like i said as soon as i got it on i started it and it ran really rough and started like twice more after that let it sit over night and wouldnt start next morning. i would get the qjet if i had the money but since i just droped alll my saved up money (supposed to be for some headman headers) on this gay *** carb idk wat to do

 

Change out the distributor, if you went to a non ccc you only did the job half way...Go get a non ccc dist mid 70's style vac advance you will be glad you did..

 

P.S I run a edelbrock thunder series on my 355 it runs sweet from idle to wot.....right out of the box.

 

so you think if i get a non-ccc dist it will work? and i can just buy a msd or something right?

 

Your car will run much better with the dist changed. First off check everything on your carb 'check for fuel 'and all your linkage ,make sure it is all properly connected and not binding on you. Then go and get a stock hei non ccd ,Your computer dist should let the car start with the non ccc edelbrock. But your timing maybe off due to the fact the computer is trying to recieve readings from your carb''' TPS AND MIXTURE SOLENOID'which is not connected anymore .It will make the computer wacky trying to control the dist timing...

 

ok well how do i tell the difference between the two and iv never installed a dist before

 

Go to parts store and tell them your plan ,or ask for a mid 70's early 80's hei dist with vacumm advance ''to keep it simple let's say for a 77 camaro 305 ......and go to this link for install infohttp://www.classiccarauto.com

 

The difference between the wo dist is
The computer control dist has two set of wire which one of them run to the cap and the other to a connect near the firewall that is control by the ecm
the other dist it has a vaccum on it. it look like a circle on the side of the dis that connect to a vaccum port.
Hope that help you out.

 

i forgot all about the dist with switching from a quadrajet to a non quadra jet carb..... isnt there 2 wires... you can splice together in the computer harness to make it run without changing the dist. i know i did it 10 yrs ago.....

 

no i dont know if you can do it but is someone 100% sure the changing the cc-dist to a non-cc dist this will fix my problem? i dont want to go out and buy a 10 dollar dist put it in (which im not 100% sure on how to do correctly) and have not start still

 

so i put the vacum dist in and it started finally omg now i just have to tune it. any suggestions?

 

Initial timing at idle with vacuum advance disconnected, 8-12 degrees BTDC.

What other tuning "suggestions" do you need?