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sputtering at 3k rpm and on

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rommel rojasgsx

rommel rojasgsx

15+ Year Contributor
348
7
Feb 17, 2009
hollywood, Florida
after changing to 850 injectors and 255 walbro fuel pump car develop a sputtering at 3k rpm. it ran fine before the change, plugs and wires are fine. oh i havent installed no fuel preassure regulator yet, would that be my problem? any ideas guys. thanks.
 
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