Question about fuel lines 77 CJ7 -
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back > Models > Jeep CJ Forum > Question about fuel lines 77 CJ7

Smittybilt Hard Tops @ Oconee Off-Road! 706-534-9955XHD Heavy-Duty Hood Latches for JK and TJ available at OcoFS: Jeep Fog Light LED Bulbs! Several Brightness Options!

Unread 04-09-2012, 09:05 PM   #1
Registered User
Join Date: Apr 2012
Location: Shelbiana, KY
Posts: 5
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!

rns59 is offline   Reply With Quote
Unread 04-09-2012, 09:30 PM   #2
Registered User
1979 CJ7 
Join Date: Nov 2011
Location: Fort Worth, TX
Posts: 70
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 -
CJinDNA is offline   Reply With Quote
Unread 04-16-2012, 10:35 PM   #3
Registered User
1979 CJ7 
Join Date: Nov 2011
Location: kelowna, British Columbia
Posts: 201
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
Jeepkid1995 is offline   Reply With Quote
Unread 04-17-2012, 01:00 AM   #4
Web Wheeler
BagusJeep's Avatar
1981 CJ7 
Join Date: Jul 2009
Location: Bali, Indonesia
Posts: 4,401
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.
fuel-filter-assembly.png   fuel-lines.jpg  
BagusJeep lives in Bali, the Land of Temples.
With a Jeep every prayer counts.

1981 CJ7 258ci - Bagusjeep
1984 CJ7 258ci - Puthijeep
1981 J20 258ci - Gladys
1995 Cherokee 4.0 - CHEROKEE
BagusJeep is offline   Reply With Quote
Thread Tools

Suggested Threads

Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. is not in any way associated with Jeep or the Chrysler Corp.