Carb problems continued

[HAULIN IT]

I feel the key word here is USED to work on cars for a living....He likely couldn't get away very long with trying to convince people to buy parts that they didn't need based on reasons he doesn't know. Either find someone who can fix it or at least give you a logical reason for what is going on. Reading your previous posts, low vacuum at the port (whichever one that is) going to the distributor isn't the problem with your truck. You should be able to start, run, move, drive, stop & shut off a vehicle with no vacuum going to the distributor without the engine stalling. Lorne
 

[choptop]

I agree w. Lorne. Make sure you dont have a vacuum leak at the transmission modulator. If the hos is ok, pull it off and make sure there isnt any tranny fluid coming out of the hose.I had a similar prob on a school bus that turned out to be the modulator for the most part, and also, I noticed the idle changed whel the air cleaner was tightened down. I think it was distorting the carb (2 barrel) and when I just snugged the lid, it ran fine. Make sure all the vacuum lines are plugged or in place. The torque convertor causing it to die is possible if you have a 700r4, or a lockup torque convertor, which unless it has been changed, shouldnt be the case in your truck. You said you rebuild the carb, one thing to take into concideration is that not all kits come with the bushings to reseal the throttle plate shafts. Might check there, but the wd40 trick should have shown that one.

[nyamwegi]

Well I got out a can of wd 40 and tried to spray lightly all around the base of the carb and hoses once it had warmed up. Couldn't hear anything. Friend told me the brake booster could have a crack in it...anyone think this could be the case? I'm not so sure as I can push the brake pedal to the floor with it in park while it's running and it won't die. I'm really to the point I want to find a mechanic who does know what he is talking about to look at it.

[Lt.Del]

I'm not so sure as I can push the brake pedal to the floor with it in park while it's running and it won't die.

If you can push the pedal to the floor, you have brake problems...air in master cylinder  or lines or master cylinder going out.

You have a check valve that the vacuum lines hooks to, that attaches to the power brake booster.  My booster went bad last year, but, it didnt effect the running of the engine.  It was just hard as heck to push the pedal down just a little.

[nyamwegi]

Assuming it is the carburetor,

if I went with this one :

http://cgi.ebay.com/ebaymotors/HOLLEY-CARBURETOR-HI-PERF-600-CARB-IMPROVED-GAS-MILEAGE_W0QQcmdZViewItemQQ_trkparmsZ72Q3a543Q7c66Q3a2Q7c65Q3a12Q7c39Q3a1Q7c240Q3a1308QQ_trksidZp3286Q2ec0Q2em14QQhashZitem250331033971QQitemZ250331033971QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories

what, besides an adapter plate, would I need  to make all the hoses/lines hook up to it?
 

[Donut]

I really don't know. 
How many vacuum ports does the Holley have vs how many do you have?  I haven't touch a Holley since the early '80's.

[nyamwegi]

My qjet has :

Fuel line to front of carb
Rubber hose to pcv valve from front of carb
Steel line to brake booster at rear of carb
Rubber hose to distributor at front of carb


The pictures they have on it look like all of the ports are in different places. I'm sure someone out there has put on a holley before....know what I'm talking about?