Tj1st Posted February 27, 2019 Share Posted February 27, 2019 So I purchased a 1986 Jeep Comanche with a 96 4.0 swapped in. I have met an impass with a fuel issue. The 96 engine has a return less fuel system. The regulator and relief valves are in the tank on a 96 Cherokee. On an 89 Comanche (donor fuel pump/sending unit) there was no pressure relief or regulator. So as it sits there is no fuel pressure regulation going on, which has caused 3 different leak occurances. Has anyone ran into this? I’m going to Home Depot to get a brass pressure relief valve, going to try and set it to about 45 psi and t valve it into the fuel delivery line see what that does. Any help is greatly appreciated, I wanna get this thing on the road! Link to comment Share on other sites More sharing options...
gogmorgo Posted February 27, 2019 Share Posted February 27, 2019 You can probably grab the fuel rail for a '91-95 XJ, maybe a YJ, or ZJ, with 4.0 at a yard and run a return line back as well. Link to comment Share on other sites More sharing options...
Dzimm Posted February 27, 2019 Share Posted February 27, 2019 1 hour ago, gogmorgo said: You can probably grab the fuel rail for a '91-95 XJ, maybe a YJ, or ZJ, with 4.0 at a yard and run a return line back as well. This is probably the easiest option. Question I have is did they cap the return fitting at the tank or leave it open? Link to comment Share on other sites More sharing options...
Jeep Driver Posted February 27, 2019 Share Posted February 27, 2019 NOT Home Despot. https://www.summitracing.com/parts/tnk-afpr1/overview/ Link to comment Share on other sites More sharing options...
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