throttle

[bmaier]

awhile back i installed a new intake manifold and carburetor on my 79 k10, everything went well, hooked up great, runs good. however, when i hit the accelerator to get goin at first it seems like i have to press the pedal fairly hard, not too hard, but it doesnt roll into it real easy. once im goin the pedal feels fine, its just that initial takeoff. its really no big deal, just one of those little things that i notice lol. im just wondering if maybe there is an adjustment i can make or something. i went from a quadrajet to edelbrock carb if that makes any difference.

[Lt.Del]

Look at your cable between the firewall and carb....check spring action, binding, etc...it happens only during taking off because you have to depress more at that time.  Check the obvious: floor mat under pedal, any other obstruction.  Play with the lever at the carb...see if it is tougher at a certain point.  It could be the carb--ensure nothing is in the way of the butterflies, etc..

[choptop]

Both Edelbrock carbs I have ran were stiffer than the q-jet. 1st one I though it was me, second one, didn't pay alot of attention to it at first because I got used to the other one. Maybe normal?

[77c15]

My dads Edelbrock acts exactly the same way, but mine doesn't. It is most likely the throttle return spring (I bought a new one, we reused his).

[VileZambonie]

Make sure the return spring isn't excessively stretched holding the throttle closed. If it is you may need to reposition it.

[TexasRed]

Mine used to do that when the accel pump was moved to the bottom hole and not the middle hole on the linkage.

[gold84gmc]

i would rather have a q-jet than an edelbrock...but thats just my opinion. to me it sounds like the throttle return spring............if anyone knows anything about q-jets look at my post in this same topic

[Lt.Del]

i would rather have a q-jet than an edelbrock...but thats just my opinion

You know Edelbrock makes the carbs that were once known as qjets.

http://www.edelbrock.com/automotive_new/mc/carbs_acc/performer.shtml

[ccz145a]

I believe those by edelbrock are carter afb's

[Blue 82]

I believe those by edelbrock are carter afb's

Weber USA made a bunch of Q-Jets for em.

[ccz145a]

Quote from: ccz145a on Today at 09:31:53 PM
I believe those by edelbrock are carter afb's


Weber USA made a bunch of Q-Jets for em.

Could be, just those in the link look like Carters. I would love to get my qjet working right again, it's a pre-smog '75 model. Rebuilt it twice with out much luck. Got a holley while I figure out where I went wrong.

[bmaier]

i've been super busy with work the past few days, but i will definitely check out what you guys have suggested. thanks for the input and i will let you know what goes on.

[Captkaos]

You know Edelbrock makes the carbs that were once known as qjets.

http://www.edelbrock.com/automotive_new/mc/carbs_acc/performer.shtml

Those are like the Carter Thermo Quads.   Edelbrock stopped purchasing the company that was supplying them Quadrajets.

[ccz145a]

Thermo Quads had a thermoplastic (bakelight) body with aluminum top and bottom. afb's were all aluminum, that's why I said. afb

[Captkaos]

Duh, didn't see that.  I just grouped them all together.