1980 Buick Century 3.8 2 barrel Dies Under Load

gbodybuick

Not-quite-so-new-guy
Nov 30, 2023
34
9
8
Carb, distributor, overall engine compartment, pull plug or 2. Have you checked thd distributor cap and rotor?
I will get those pictures asap as im away from the car at the moment. Not sure what the thd is, but I did check the distributer cap and rotor, I also cranked the engine with the rotor off to make sure it spun good. In the mean time I have a few other videos which may be of help of me reving it in park (you can see the hesitation) and it idleing. Smoke sometimes comes from the engine bay when its high idleing which is also something that appeared when these issues started.


 

stew86MCSS396

Greasemonkey
Aug 1, 2022
175
230
43
(808)
RPReplay_Final1705911922.gif
Your carb may look different.
In response to post #11...to elaborate when you move the throttle lever, the squirt of fuel is to cover up any lean spots. Lack of the squirting, engine falls on it's face. You keep saying that it can't be the carb bc it was rebuilt professionally by a reputable mechanic. Doesn't mean squat to me if you're not getting the accelerator pump "squirt" shot. Verify and if it's good, we move on to the next item. What is that loud clanging sound in your video???
 
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stew86MCSS396

Greasemonkey
Aug 1, 2022
175
230
43
(808)
You seemed to have slipped in those last 2 videos right as I sent my reply. My comment was referring to your first posted video that you are trying to start the engine. Sounds like some kind of mechanical clanging going on.
 

ELCAM

Royal Smart Person
Jun 19, 2021
1,124
1,270
113
One of the ugly noises is the starter is too tight in the ring gear. Needs shims.
 
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gbodybuick

Not-quite-so-new-guy
Nov 30, 2023
34
9
8
You seemed to have slipped in those last 2 videos right as I sent my reply. My comment was referring to your first posted video that you are trying to start the engine. Sounds like some kind of mechanical clanging going on.
Oh, that is the engine firing for a second then failing and clashing with the starter wheel.
 

jcelk

Apprentice
Dec 10, 2014
91
54
18
in the first video i saw a puff of smoke while cranking could be an ignition problem check plug wires are in the cap right and check cap for cracks might want to replace cap and rotor sometimes the cap is bad but looks ok
 
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SoFloG

Royal Smart Person
Mar 9, 2016
1,107
1,258
113
South Florida
This is along my train of thought. All the symptoms are reminiscent of a bad ignition module in the distributor.
 

SoFloG

Royal Smart Person
Mar 9, 2016
1,107
1,258
113
South Florida
Smoke looks like valve cover gasket. Excessive crankcase pressure and weird leaks seem to occur after lots of cranking and misfiring and not-driving lol.

PCV valves is something else to check!
 

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