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Jeep Wrangler YJ
YJ General Discussion
1992 2.5 YJ seems to have fuel issues
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<blockquote data-quote="ddross" data-source="post: 428778" data-attributes="member: 19444"><p>I have a 91 2.5L and I believe the pressure ratings for a YJ 2.5l should be 31 to 39 psi. I am curious if you did a leak down test when you had the fuel pressure gauge on it since you replaced the fuel pressure regulator? I think it should hold 30 psi after 30 minutes after the engine has been turned off. </p><p></p><p>I have one question since you mention the gas pump clicks off after 6 or 7 gallons at fill up. When you do fill up what does your gas gauge read? Also, the vent tube Flyer58 mentioned can be removed to allow the tank to be filled to the full 20 gallons or very close to it. Power Addicts on Youtube has a video on how to do it, and there are other write ups on how to convert a 15 gallon tank to 20 gallons. I did it to mine years ago and it registers full for quite a while until the gas level drops to the point where the float can measure it. Since you mention how you can add a gallon of gas and the jeep will run it sounds like it is picking up gas without issue. I think Flyer58 has a good suggestion to check the miles you get out of tank of gas after a fill up.</p></blockquote><p></p>
[QUOTE="ddross, post: 428778, member: 19444"] I have a 91 2.5L and I believe the pressure ratings for a YJ 2.5l should be 31 to 39 psi. I am curious if you did a leak down test when you had the fuel pressure gauge on it since you replaced the fuel pressure regulator? I think it should hold 30 psi after 30 minutes after the engine has been turned off. I have one question since you mention the gas pump clicks off after 6 or 7 gallons at fill up. When you do fill up what does your gas gauge read? Also, the vent tube Flyer58 mentioned can be removed to allow the tank to be filled to the full 20 gallons or very close to it. Power Addicts on Youtube has a video on how to do it, and there are other write ups on how to convert a 15 gallon tank to 20 gallons. I did it to mine years ago and it registers full for quite a while until the gas level drops to the point where the float can measure it. Since you mention how you can add a gallon of gas and the jeep will run it sounds like it is picking up gas without issue. I think Flyer58 has a good suggestion to check the miles you get out of tank of gas after a fill up. [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
1992 2.5 YJ seems to have fuel issues
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