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Jeep Wrangler YJ
YJ General Discussion
1991 2.5 doesn't like to start when engine is hot
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<blockquote data-quote="DOWNS" data-source="post: 440290" data-attributes="member: 21038"><p>Brandon hasn't been on the forums since May of 2022. I don't think he's going to show up to answer your question but he might. Maybe. </p><p></p><p>Get a fuel pressure gauge and get readings. And good 'nuff gauge is 20sih dollars on Amazon. Even cold. I had fuel pressure issues, it was way low due to a weak pump. It would start fine sometimes and other times be a massive pain to start. Having wonky fuel pressure messes things up bad for these FI vehicles. The computer doesn't know what the fuel pressure is, its fuel tables are based off of the factory spec fuel pressure and if you go outside that window the fueling gets messed up.</p></blockquote><p></p>
[QUOTE="DOWNS, post: 440290, member: 21038"] Brandon hasn't been on the forums since May of 2022. I don't think he's going to show up to answer your question but he might. Maybe. Get a fuel pressure gauge and get readings. And good 'nuff gauge is 20sih dollars on Amazon. Even cold. I had fuel pressure issues, it was way low due to a weak pump. It would start fine sometimes and other times be a massive pain to start. Having wonky fuel pressure messes things up bad for these FI vehicles. The computer doesn't know what the fuel pressure is, its fuel tables are based off of the factory spec fuel pressure and if you go outside that window the fueling gets messed up. [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
1991 2.5 doesn't like to start when engine is hot
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