Vauxhall Vectra missfiring with intermittent knocking from engine

2000 Vauxhall Vectra Problem

Hi everyone hope someone can help me with my car problem ???
I was driving today for about 10 miles average speed lol and the car started to missfire and lose power then a rumble started from the engine and it felt as though the car would stall, ive had the cambelt checked and its not loose the oil is not frothy or creamy i have had antifreeze over the cold period. the knocking is not continuous and seems to idle ok for a while then suddenly a knocking from the engine and a missfire starts.....any ideas?
CarVauxhall Vectra 1.8 sri
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Problem Category
Engine, Cooling System & Drivetrain

Gearbox & Clutch

Steering, Suspension, Brakes, Wheels & Tyres

Leaks & Noises, Interior and Bodywork

Running Rough, Starting & Power Loss

Solution 1
2145simon | Driver | Since: Apr 2010 | Posts: 2 | Fixes: 1029 | View Garage
Suggested Solution

the coilpack could be causing the misfire,you really need to get a diagnostic done to find any faults,is knocking noise coming from top or bottom end

Posted on Tuesday 28th of December 2010
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