Question about fuel lines 77 CJ7 -
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post #1 of 4 Old 04-09-2012, 10:05 PM Thread Starter
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Question about fuel lines 77 CJ7

Ok...on my 77 CJ7 I've got 2 lines coming from the top of my fuel tank. One is the fuel line...not sure about the other one unless it's the return line. If so...where does it hook on the carburetor? Can anyone help? Thanks!

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post #2 of 4 Old 04-09-2012, 10:30 PM
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Return line would actually hook up to the bypass style fuel filter depending on engine/carb combination. Return line should be run down the driver's side of the frame. Image of the bypass type filter -
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post #3 of 4 Old 04-16-2012, 11:35 PM
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Just did this on my '79 CJ7 today, and it uses the same style fuel filter as the one in CJinDNA's link above. The fuel line down the right side of the vehicle goes over top of the valve cover (assuming you have the stock 258) and plugs into the side of the filter with the single plug. The return line on the left side of the vehicle plugs in to the smaller of the two plugs on the other side of the filter, and the larger plug runs right into the carb. If I remember mine right now, there is a large obvious plug on the front of the carb.
Hope this helps, and wasn't too confusing
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post #4 of 4 Old 04-17-2012, 02:00 AM
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some images. The trick with the filter is to mount it horizontally and have the tank return at 12 o'clock. The diagram maks it look like it is alongside but this is a fault with the sketch.

worth checking which tank you have. The sketch below is for the later 1980s set up with the tank vent running to a canister in the engine bay. Yours probably has a fuel line and a return line and a vented filler cap.
Attached Thumbnails
fuel filter assembly.png   fuel lines.jpg  

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1981 CJ7 258ci - Bagusjeep
1984 CJ7 258ci - Puthijeep
1981 J20 258ci - Gladys
1951 Willys CJ3A/MB/M38 - Little Willy
1995 Cherokee 4.0 - CHEROKEE
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