Originally Posted by
willtorrance
hi people can use help me. my xr3i
(efi) has got an engine judder pretty bad when driving, its fine when ticking over or if u rev it its fine jst when driving, what could this be? the engine has just been rebuilt too......
have you done any tests to see if you can norrow it down, like reving it until it misfires and then taking a plug lead off, then swaping a plug to see if the misfire moves, you could do the same with the injectors
or just put the car on a diagnostic machine at a local garage, might cost £40 depending on where you are