Fuel rail bump

Bryce_fow

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So a guy brought me a 10 6.4 tuned and del with a mini max and a fass with fuel bowl del so here’s what it’s doing
When you start the truck the rail pressure goes to 7.0 to start then goes back down to 4.8 but for a split second after it goes to 4.4 just for a split second but he said it has always done that but when you cut it off with key on it was reading 0.3 so I put a new sensor and it fixed that but still has the bump for a split second anyone else seen this it only does it one time after it starts


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sootie

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Is the truck acting wierd at all? Personally I don't think it's an issue unless you are getting a skip, miss or rough idle.
 

Bryce_fow

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Is the truck acting wierd at all? Personally I don't think it's an issue unless you are getting a skip, miss or rough idle.



No runs perfect I am thinking it is fine too but before I give it back wanted to be sure


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