1972 CJ 5 Fuel Starved - JeepForum.com
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post #1 of 4 Old 08-12-2017, 08:35 PM Thread Starter
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1972 CJ 5 Fuel Starved

Hey guys! I just joined the forum to gain some knowledge about this gem of a CJ I bought about 8 months ago. To make this short, the Jeep started spitting and sputtering, so I basically gave it a tune-up. Problem persisted, so I chalked it up as a fuel problem. Replaced Carb, (Edlebrock), mechanical fuel pump, gas lines , New tank, sending unit, etc and I'm at wits ends. I have a fuel filter, which is also brand new, right before the feed hose that goes into the carb. I can crank the jeep up and watch the gas spit and sputter into the fuel filter. I was thinking maybe Air is getting in somewhere but I'm almost sure I've got everything sealed. What you guys think?

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post #2 of 4 Old 08-20-2017, 09:02 PM
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2000 TJ Wrangler 
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Try checking your fuel pressure to see if it's erratic. With essentially the entire fuel system replaced, about the only things that pop into mind would be either some crud in the tank that's restricting the outlet, or possibly the tank isn't vented properly (easy check for this, see if it runs any better with the gas cap removed).

If you're still running a points-style ignition, a faulty condensor can make the engine act like it's being fuel starved.

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post #3 of 4 Old 08-21-2017, 04:40 PM
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1974 CJ6 
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fuel shouldn't spit/sputter into the filter. You should get a good pulsating stream. Check all of the rubber connection between the sending unit and fuel pump to make sure you aren't sucking in air anywhere.

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post #4 of 4 Old 08-26-2017, 10:50 PM
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1971 CJ5 
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First, please fill out your profile. As we speak, we don't know which engine or carb you are running.
Spitting and sputtering during cruise? acceleration? Cruise denotes a lean burn while acceleration points to the acceleration pump.
What did you do for a tune up? Did you replace and reset the points?
Watching the fuel filter won't tell much. If you believe you have a starvation problem, pop the lid off the carb and check the float level.

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