kibonzo Posted January 12, 2015 Share Posted January 12, 2015 (edited) Hi Guys, I have a BF 4 legacy wagon running a swap EJ15. I recently did service (engine oil, air filter & plugs change) and gassed up the ride. I notice that the smoothness in the drive has changed. on low raves the car runs smoothly but when pressing on the gas in order to gain momentum, the cars starts jerking a if its running low on fuel. What diagnostic areas should i look at? Thanks Jeremy Edited January 12, 2015 by kibonzo Link to comment Share on other sites More sharing options...
ezapar Posted January 12, 2015 Share Posted January 12, 2015 I'd suggest looking for a vacuum leak. Did you plug the wires back into the plugs properly? Link to comment Share on other sites More sharing options...
xdeadeye1 Posted January 12, 2015 Share Posted January 12, 2015 fuel filter and pump imo. Link to comment Share on other sites More sharing options...
kibonzo Posted January 14, 2015 Author Share Posted January 14, 2015 My thinking also lies on the fuel system i.e fuel pump and filter. The plugs were well fitted back. Link to comment Share on other sites More sharing options...
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