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GEN 1 (2010-2014) Ford SVT Raptor Forums
Ford SVT Raptor General Discussions [GEN 1]
2013 Roush Raptor misfire at higher levels of boost
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<blockquote data-quote="MTF" data-source="post: 1689617" data-attributes="member: 499"><p>My first concern would be,</p><p></p><p>Weak battery? Anything under 12.7 volts when truck is off is a NO GO!</p><p>Loose and corroded connections all the way down to the starter!!!!</p><p>The Roush SC will never need more fuel pressure than the stock fuel pump can deliver.</p><p>But I would check fuse #27</p><p>Have you done the TSB relocation for fuse 27?</p><p></p><p>Mass air flow sensor clean?</p><p>Check and tighten all intake tubes!!!</p><p>How many miles on the spark plugs?</p><p>What are they gap at?</p><p></p><p>Are you using the highest octane fuel you can find and do you trust them? but you tried a few places you stated.</p><p>Bad and/or cheap gas will do that!!!</p><p>If you think you may have gotten a bad tank full of gas,</p><p>I would run some ethanol enzyme fuel treatment and injector/full system cleaner.</p><p>I do this two to three times a year myself.</p><p></p><p>What heat exchanger do you have?</p><p>Heat, heat causes miss fires, check all fluids.</p><p>Check thermostat or use a colder one, I run a 170 and you don't need to change it for the winter months.</p></blockquote><p></p>
[QUOTE="MTF, post: 1689617, member: 499"] My first concern would be, Weak battery? Anything under 12.7 volts when truck is off is a NO GO! Loose and corroded connections all the way down to the starter!!!! The Roush SC will never need more fuel pressure than the stock fuel pump can deliver. But I would check fuse #27 Have you done the TSB relocation for fuse 27? Mass air flow sensor clean? Check and tighten all intake tubes!!! How many miles on the spark plugs? What are they gap at? Are you using the highest octane fuel you can find and do you trust them? but you tried a few places you stated. Bad and/or cheap gas will do that!!! If you think you may have gotten a bad tank full of gas, I would run some ethanol enzyme fuel treatment and injector/full system cleaner. I do this two to three times a year myself. What heat exchanger do you have? Heat, heat causes miss fires, check all fluids. Check thermostat or use a colder one, I run a 170 and you don't need to change it for the winter months. [/QUOTE]
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GEN 1 (2010-2014) Ford SVT Raptor Forums
Ford SVT Raptor General Discussions [GEN 1]
2013 Roush Raptor misfire at higher levels of boost
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