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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
2020 Engine Trouble, Cylinder Backfires and Camshaft Position B.
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<blockquote data-quote="FordTechOne" data-source="post: 1831959" data-attributes="member: 35543"><p>Compression specs are not published; the test procedure is to measure compression in all cylinders and then compare the readings. The lowest reading should be within 75% of the highest readings.</p><p></p><p>Broken ground electrodes are the result of pre-ignition or a shock load in the cylinder. Since there was fuel pouring out of the exhaust, there may be an issue with the PFI or DI injector in that cylinder.</p></blockquote><p></p>
[QUOTE="FordTechOne, post: 1831959, member: 35543"] Compression specs are not published; the test procedure is to measure compression in all cylinders and then compare the readings. The lowest reading should be within 75% of the highest readings. Broken ground electrodes are the result of pre-ignition or a shock load in the cylinder. Since there was fuel pouring out of the exhaust, there may be an issue with the PFI or DI injector in that cylinder. [/QUOTE]
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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
2020 Engine Trouble, Cylinder Backfires and Camshaft Position B.
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