HI, i have a mk2 16v. I have recently had a 2.0l 6a bottom end fitted. The problem i am experiencing is that when you start it up you need to give it a some gas. Sometimes its starts first time when i give it some gas and others takes a bit more time before it fires up.

I have also noticed that when i drive the car for say over 8 miles so the engine is up to temperature, and i stop and turn the engine off, then try to start it up straight away its very difficult, and its like all the power has been drained, but if i leave it for some time then its ok.

Do you have any idea whats going on here? cheers