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Discussion Starter · #1 ·
I got an 04 LB7 with 316k miles . Every so often when I’m driving around 60mph my RPMS will shoot up and then back down a second later . I got a code for water in fuel and I changed out my fuel filter and the code and check engine light went away. Today it did it again for about 3 seconds and then check engine light came on and went into limp mode. Any suggestions on what it could be ?
Also has white smoke when I start it up and idling
 
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