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455 olds cuts out

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76Mantra455

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« on: July 30, 2019, 02:13:14 PM »
Hey when Iím running on my driver side tank it cuts out like its starving for fuel but on the passenger tank it dose not do it nearly as much. This is only under hard throttle. The motor has 68 hours on it new edelbrock cark and i just put new filters and fuel pump on it. It seems to be getting fuel could the timing need to be advance a little or ditch the edelbrock 750 and get a Holley marine carb. One thing I havenít done has flush the tank or run it completely out of fuel and start fresh. And the fuel lines are old
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mash on it

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« Reply #1 on: July 31, 2019, 12:57:15 PM »
Hey when Iím running on my driver side tank it cuts out like its starving for fuel but on the passenger tank it dose not do it nearly as much. This is only under hard throttle. The motor has 68 hours on it new edelbrock cark and i just put new filters and fuel pump on it. It seems to be getting fuel could the timing need to be advance a little or ditch the edelbrock 750 and get a Holley marine carb. One thing I havenít done has flush the tank or run it completely out of fuel and start fresh. And the fuel lines are old

On my dual tank set-up, it was the gas cap not letting in any air, and creating a vacuum. A small hole in the gas cap underside solved that problem. Only one side did that.

Back to back testing, the Holley carb worked better than the eddy carb.
Better acceleration, and fuel economy, as well as idle quality.

Dan'l
CJ/RR 212...under construction  "Pistol Annie"

TrollerDave

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« Reply #2 on: July 31, 2019, 01:26:18 PM »
Electric or mechanical pump? Do you happen to have a fuel pressure gauge that a passenger could watch while you run it?
Do you have the float set so you have enough fuel in the bowl for wide open runs?  Maybe itís coincidence that one side does it more.



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76Mantra455

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« Reply #3 on: July 31, 2019, 02:16:09 PM »
I was thinking vapor lock to cause my 63 Lincoln used to do that when it was hot. Mechanical fuel pump no pressure gauge, and the floats i have know idea i pulled it out of the box and slapped it on. Soon as i get enough money up i am gonna upgrade the carb to a Holley.
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Nickel$worth

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« Reply #4 on: August 04, 2019, 09:50:22 AM »
Hey when Iím running on my driver side tank it cuts out like its starving for fuel but on the passenger tank it dose not do it nearly as much. This is only under hard throttle. The motor has 68 hours on it new edelbrock cark and i just put new filters and fuel pump on it. It seems to be getting fuel could the timing need to be advance a little or ditch the edelbrock 750 and get a Holley marine carb. One thing I havenít done has flush the tank or run it completely out of fuel and start fresh. And the fuel lines are old
If you say your fuel are old, a small crack could be sucking air. I see you change the fuel filter thatís good.  High Hp need 3/8Ē fuel line, not 5/16Ē.


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76Mantra455

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« Reply #5 on: August 04, 2019, 05:57:45 PM »
Yeah Iím gonna take a look at the lines here in a bit. And Iím not running much horsepower its .40 over with a cam and C big valve heads donít know if its stroked havenít got that far in it. JBP said its a healthy engine though
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76Mantra455

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« Reply #6 on: August 04, 2019, 09:01:27 PM »
I believe I figured it out. One of the plugs on the intake manifold was a little lose so it was likely sucking a little air and then the fuel filter going to the carb was leaking gas when i turned it over so a defective fuel filter and a possible leak on the intake manifold could do it. So i filled it up added my lead additive and tomorrow during the day before work Iím going to buena vista and go tubing and if the bogging is down maybe water ski...
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TrollerDave

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« Reply #7 on: August 05, 2019, 05:04:51 AM »
Hopefully that is it. If not, at least it was 2 things fixed. Tubing and skiing before work, a heck of a way to start the day.


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76Mantra455

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« Reply #8 on: August 05, 2019, 10:53:59 AM »
Right thanks tubing for sure skiing is up in the air lol
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76Mantra455

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« Reply #9 on: August 12, 2019, 09:41:57 AM »
Right thanks tubing for sure skiing is up in the air lol
Went out on Saturday and no cutting out

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76Mantra455

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« Reply #10 on: August 12, 2019, 09:52:10 AM »
Went out on Saturday and no cutting out

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Here are a few more

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TrollerDave

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« Reply #11 on: August 12, 2019, 02:29:35 PM »
Went out on Saturday and no cutting out

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Awesome. Hopefully that was it. Cool pics.


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76Mantra455

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« Reply #12 on: August 12, 2019, 03:29:07 PM »
Awesome. Hopefully that was it. Cool pics.


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Thanks yeah im trying to add the videos to this post but it wont let me. Im glad its not bogging no more. I will be out there for the next event even if i gotta camp out in a walmart parking lot

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