Dear Scotty,
I have a 2008 Vauxhall Corsa 1.4 and it judders I have had the timing chain replaced recently. It judders when driving casulay so i have to take my foot off and on the gas pedal so it doesn't. It's also making a rattling sound I had the throttle body changed as well and diagnostic done but nothing came up. Im wasting money for nothing at the the minute oh it judders more going up a steep gradient. Thanks also been a fan of your videos before I cold drive as they helped my dad a lot.

pressure test the fuel pump, weak ones do that. BUT so do lots of other things, including bad engine repair with timing chain not put on right or flat wearing out engine