Bogging Down Issues
Mountain Pass
Joined: Nov 2004
Posts: 242
Likes: 54
From: Central Texas
Thanks for your response!
I installed a fuel pressure regulator today and dialed it down to 4 1/2. I also checked the little screen right inside the fuel inlet on carb (looks clean). I will road test it tomorrow morning to see if lowering psi works.
This is what has been done last month:
I just replaced everything fuel related, including new fuel tank. 2 new filters, fuel lines, etc. Carb is brand new, purchased last month.
Distributor= MSD Flamethrower 2 (new), MSD Blaster 2 Ignition Coil (older), no box.
Flowmaster exhaust with nice headers (not sure on brand for headers).
Timing= set mark at 0 tdc, (tdc is correct/hand cranked engine until #1 was at top) used timing light to set to around 8/9 initial. Did not set total timing yet. Idle speed is 600 rpm.
Adjusted fuel/air screws on carb with vacuum gauge and is steady.
It seems that the bogging started after I installed new carb. The old carb (1404 edelbrock) was pushing fuel through vacuum advance line into distributor diaphragm and It caused my truck to die.
I installed a fuel pressure regulator today and dialed it down to 4 1/2. I also checked the little screen right inside the fuel inlet on carb (looks clean). I will road test it tomorrow morning to see if lowering psi works.
This is what has been done last month:
I just replaced everything fuel related, including new fuel tank. 2 new filters, fuel lines, etc. Carb is brand new, purchased last month.
Distributor= MSD Flamethrower 2 (new), MSD Blaster 2 Ignition Coil (older), no box.
Flowmaster exhaust with nice headers (not sure on brand for headers).
Timing= set mark at 0 tdc, (tdc is correct/hand cranked engine until #1 was at top) used timing light to set to around 8/9 initial. Did not set total timing yet. Idle speed is 600 rpm.
Adjusted fuel/air screws on carb with vacuum gauge and is steady.
It seems that the bogging started after I installed new carb. The old carb (1404 edelbrock) was pushing fuel through vacuum advance line into distributor diaphragm and It caused my truck to die.
FTE Legend
Joined: Nov 2015
Posts: 30,855
Likes: 4,105
From: Angier, NC
Just wondering, when you put in a new fuel tank did you use your old gas cap or replace it it with a new one. If it's new you might try using your old cap and see if it helps. Some of the replacement gas caps are not vented and can draw a vacuum in your fuel system and cause a problem.
Dave ----
Cargo Master
Joined: Dec 2019
Posts: 2,818
Likes: 375
I am wondering if its an over time thing (as in bogs at speed vs also when running hard in low gears)? Can you get it to happen on cue?
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