1976 truck dying while turning

[mk_tacticalranch]

ok, here is what I have found so far:  It started on the first try.  Sounds like it is struggling to breath or get fuel.  It will barely stay running without pressure on the gas pedal.  It drove alright while i was on the gas, wanted to die when i down shifted or let off the gas.  Nothing changed while i was going around corners.    Carb is 4BBL Holley.  Stock for the truck?  I am going to clean the fuel lines and tanks.  There has been gas sitting in it for over a year, (The truck has been driven maybe 5 times in the past year) they just topped off one tank a few weeks ago.  The idle is crap on both tanks.  I didnt drive it far, (the brake lines are shot so no brakes but that's another thread!) I did make sure I drove in 1st, 2nd, 3rd and reverse.  Turned both directions.

Ill do regular maintenance (tune up, oil change, etc.) after/during that. Carb rebuild after that.  Am I missing anything? 

Thanks

~Mellisa~

[LTZ C20]

Sounds like you just about covered it. Thanks for all the info, it definitely sounds like a fuel supply issue. 4 barrel carbs are stock for these trucks. Not as holley units tho, the stock carbs are Quadrajets. A fuel pressure reading will definitely be the best course of action at this point. I would install a fuel pressure gauge just before the line goes into the carb. Then depending on the reading go from there, but it sounds like your on the right track with the fuel system. Just make sure you fix this issue before doing the other stuff, unless the other stuff is required to repair this issue. Good job! Your getting there!

[blazer74]

Blown power valve in holleys can cause idle problems. Causes over rich mixture


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[LTZ C20]

Blown power valve in holleys can cause idle problems. Causes over rich mixture


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This is true. Since she plans on rebuilding the carb, that will get checked.

[mk_tacticalranch]

Thank you guys for the help!  I am going to rebuild my carb on my burb too!  My friends pick up is disaster.  After deeper inspection, the plan is pull the motor and sell the rest as parts!  Looks like I have a 350 to completely rebuild! I'm excited!

[blazer74]

Enjoy and good luck!


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[LTZ C20]

Sweeet! Sorry it kinda ended that way but sometimes that's the way it goes with old vehicles, some times you have to know when to go forward or abort and start again on something else. Have fun! Your welcome.