Ford C Max 1.8L 2004. On normal/moderate acceleration the
car drives smoothly. If I accelerate a little harder, 2,500+ rpm in second,
3,000+ in third etc, the car judders and acceleration is not smooth. Feels a
little like dirty petrol but not sure if that is the case.

Have tried to accelerate through the issue to try and clear
it but that has not worked.

Any ideas?

Ian

U check for fault codes

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Thanks for posting back. Yep. Plugged into a diagnostics and no codes came up at all.

Hoping it is something simple to cure.

wat diagnostic machine u using if it's decent then maybe fuel pressure check

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i had similar & found it was a vaccuume hose on the front of the engine had split.

gethave a look to see if it's a hose gone.

a small family run garage done mine for £200. it was a sod of a job to do

as i was gonna do myself roadside but weather was against me so garage done & and im glad they did as the mech said he hated doing it

as it was a reals sod to do as limited space to get the part on & off .

best of luck m8.

I have had a similar problem with my mk2 focus with the 1.8 duratec engine. I found unplugging the egr valve has helped. So I fitted a blanking plate.