Author Topic: Six BBl bogging  (Read 171 times)

Offline Roadrunner420

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Six BBl bogging
« on: November 26, 2018 - 08:33:39 pm »
Having issues with my 6 bbl bogging out and leaning the carbs after being under load and putting my foot in it a bit.   Then it dies,  and I have to fill the vent bowl with fuel to get it going and back to my house.

In the driveway it runs prefect and revving it good and it doesnt bog.

I pull about 12 of vacuum at idle.  Outboards set about 1 1/4 turns each.  Center 1 1/2 turns -  square transition slot.  Fuel just at the bottom of the sight plugs at high idle.

I replaced the mechanical fuel pump with a new carter - and no change to my issue.

Any thoughts?


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Offline 1 Wild R/T

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Re: Six BBl bogging
« Reply #1 on: November 26, 2018 - 08:38:45 pm »
Pull the fuel pump, then pull the plug below the fuel pump & take the fuel pump pushrod out & measure it.... It should be 3.250.....  If it's short you have found your problem....  Other possibilities are a plugged fuel line/filter or air leaking into the fuel line between the pump & the tank....
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Offline Roadrunner420

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Re: Six BBl bogging
« Reply #2 on: November 26, 2018 - 09:16:08 pm »
I will give it a shot- thanks!


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Offline Roadrunner420

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Re: Six BBl bogging
« Reply #3 on: November 27, 2018 - 11:13:28 pm »
Well I pulled the rod and it looks good not worn- measurement 3.223, which according to  440 source and comp cams is correct length.  Hard to see if air is entering the system.  I have a glass filter before the vapor canister and it doesnt show bubbles when revving it-  I am going to plum in a electric to see if that helps the issue.


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Offline 70chall440

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Re: Six BBl bogging
« Reply #4 on: November 28, 2018 - 10:39:39 am »
I experienced a similar issue with my carbureted 6 pack (replaced it with EFI 6 pack); I did exactly what you are doing, pulled the rod (it was fine), checked the system (all seemed fine). In the end it was a fuel filter. It looked good, but once I took it off and tried to blow through it, I discovered it had a considerable amount of restriction. 
Current Mopar
70 Challenger RT 440-6, 73 Cuda (under const)
05 Durango, 99 Dakota, 01 Ram 4x4, 14 2500 4X4, 10 PCP Challenger RT, 01 Viper GTS ACR, 52 B3B w/330 Desoto Hemi, 70 Hemi RR, 61 Jeep FC170
Past Mopars
9 x Challengers. AAR Cuda, 4 RR, 2 GTX, 4 Chargers, etc... (too many to list)

Offline Roadrunner420

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Re: Six BBl bogging
« Reply #5 on: November 29, 2018 - 11:19:54 am »
I will pull my filter and replace it with a new once just in case


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Offline 70chall440

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Re: Six BBl bogging
« Reply #6 on: November 29, 2018 - 12:50:14 pm »
 :2thumbs:
Current Mopar
70 Challenger RT 440-6, 73 Cuda (under const)
05 Durango, 99 Dakota, 01 Ram 4x4, 14 2500 4X4, 10 PCP Challenger RT, 01 Viper GTS ACR, 52 B3B w/330 Desoto Hemi, 70 Hemi RR, 61 Jeep FC170
Past Mopars
9 x Challengers. AAR Cuda, 4 RR, 2 GTX, 4 Chargers, etc... (too many to list)

Offline Roadrunner420

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Re: Six BBl bogging
« Reply #7 on: December 08, 2018 - 07:26:05 pm »
So weather was good enough today to take the car out and cruise around the block a few times-  seems to not bog anymore- I went back to the factory style and plumbed the fuel pump outlet directly to the vapor canister. Before I had in running thru a glass filter


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Offline 70chall440

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Re: Six BBl bogging
« Reply #8 on: December 08, 2018 - 07:45:52 pm »
Excellent, sounds like progress.
Current Mopar
70 Challenger RT 440-6, 73 Cuda (under const)
05 Durango, 99 Dakota, 01 Ram 4x4, 14 2500 4X4, 10 PCP Challenger RT, 01 Viper GTS ACR, 52 B3B w/330 Desoto Hemi, 70 Hemi RR, 61 Jeep FC170
Past Mopars
9 x Challengers. AAR Cuda, 4 RR, 2 GTX, 4 Chargers, etc... (too many to list)

Offline Roadrunner420

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Re: Six BBl bogging
« Reply #9 on: December 13, 2018 - 12:34:41 am »
I decided to change back to the steel line from the fuel pump outlet. I have a Hemi Carter Mechanical- and it appears to be 1/2 in npt.  But the steel tube has a straight thread fitting 5/16 or 3/8 cant tell - but the factory fitting is too small for the outlet on the fuel pump.  Anyone know what adapter i need? 


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