I wanna go back to
Join Date: May 2004
Location: North of Northern England
Re: juddery 155
does this have any relation to the amount of fuel in the tank? if it happens with 1/4 tank or less there's a reasonable chance it could be the pipe that runs from the fuel pump to the top of the tank is letting fuel escape, very cheap to fix (10 inches of fuel pipe) but a bit of a pain...
second thought would be it drawing air, if it is this check all the hoses etc on the inlet side but move them about to see if any gaps open up, especially check the rubbers which are between the inlet manifold and the plenum chamber