audi a4 b7

[stefan1978]

When the engine its cold and I turn it on it rides smoothly but after 5 minutes the engine starts to shake and I've changed the injectors the wiring from injectors and wiring from spark plugs, changed cambelt and changed the clutch kit with crankshaft and I've changed boot sensor ,multi air function sensor .And I don't know what else to do to make it work, if you know or have some ideas about what might be wrong please tell me .Many thanks