Juddering when accelerating over 30mph

2000 Vauxhall Tigra 1.4 petrol
Car: Vauxhall Tigra
Year: 2000
Variant: 1.4 petrol
Categories: Running Rough, Starting & Power Loss
my tigra has developed a judder when im accelerating. it recently had head gasket,cam kit, water pump, bolts,caterlitic converter. it was driving fine for a while before juddering occurred. its been on diagnostics and all clear, there are no warning lights on at all. 1 garage said blocked exhaust, another said dropped valve or coil pack.is there anyway to tell without spending stupid money. as the car has cost me double what I originally paid. any1 plz help.. many thanks
Problem added: Sep 17, 2013 (10 years ago)
Possibly more of an ignition issue such as coil,leads or plug,s surprised no codes logged ,really need to test the car and look at parameters to see what,s happening,a good garage may be able to do this.
Answered Sep 17, 2013 (10 years ago)

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