problem with gt1 car judders when flood

[phippsy gt]

on the way down to the rolling road in essex on saturday and my gt1 was juddering when i put my foot down. when i got there i was told that my gt1 was under fuleing so chaged my fule pump and its still doing it any help

[Dean]

fuel filter maybe.
money ?????

[jimn]

Is your car standard? Whats the spec?

[phippsy gt]

its on its way be 5 min

[phippsy gt]

its only got kent cam and de cat seb0 chip going on tomorrow

[jimn]

Like dean said then, best place to start is change your fuel filter... Only a few ££

[webbo]

depends if its under fuelling due to not enough fuel, too much air or a sensor not working properly.

you need to get the fuel pressure checked, it should be 45psi without vac(take vac pipe that runs from fuel pressure reg to inlet off).

if this is low, then change the fuel pressure reg as this will more than likely be the problem.

if its running lean but the pressure is fine, then maybe you have a air leak and its sucking in air.

in terms of sensors, the afm would cause incorreect fuelling, as would problems with the relays on the drivers inner wing, the cts, air temp sensors.

[tomgtt]

my car was juddering loads as i put my foot down in higher gears or when setting off when the car is moving slowly, i just chanegd the spark plugs and it was perfect again, i couldnt belive it! try them first mate, cheap option!

[phippsy gt]

nice one i will give it a go

[tomgtt]

any luck? ngk bcp6ret's!