Woke up this mornin and turned on the car and the exhaust started stuttering andf the idle kept going up and down, the temp outside was only 6'c which it has started before at -2'c. When i took it for a spin hopin it was just the cold morning the acceleration was poor like i was puttin me foot down and the car wasnt goin fast and was shuddering. Sometimes it did respond and the revs shot up!. So when i got in i checked the oil which was well under a quarter so i topped it up, i squeezed all the water and coolant pipes for blockages but it was flowin freely. I asked me dad and he thinks it could be 1 of 3 things.
1. Dirty Fuel (I am in the red atm)
3. Blocked or damaged injector
I have an astra coupe 1.8i 16v 2001 (Y) engine model X or Z18XE
PS. I dont have any warning lights appear on the display