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......

tommytwotanks

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

willtorrance

hi, Ive not long had the engine rebuild new plugs and leads last week new clutch and gearbox. do you think it could have anything to do with the fuel relay or fuel pump? or anything else? any info is much appreciated thank you

willtorrance

hi, Ive not long had the engine rebuild plugs n leads were done last week. gearbox and clutch recently fitted. its kinda got a flatspot too and juddering. its jst whern its driven and on tick over its ok and ok when you rev it, do you think it could be down to the fuel relay or fuel pump? any info you can give me is much appreciated thank you

tommytwotanks

a mate of mine many years a go had a 1986 d reg xr31, the coil pack went on that, and the 1990 xr3i cab that i had the fuel pump went, cant you call out the AA or RAC to check or get a local garage to call round

do you think it could be a blocked injector

willtorrance

im not sure mate worth a try i suppose

willtorrance

just want it sorting asap as its sold some ppl say its the air and fuel mix. do u no how to change it?