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Car running rough - Printable Version +- VXOC Astra-J/GTC (https://vxoc.org.uk/forum) +-- Forum: Astra-J/GTC Section (https://vxoc.org.uk/forum/forumdisplay.php?fid=5) +--- Forum: Astra-J/GTC (https://vxoc.org.uk/forum/forumdisplay.php?fid=19) +--- Thread: Car running rough (/showthread.php?tid=3883) |
Car running rough - Jake - 14:th-May-2018 Hi there, ive got a problem with my 1.4T that I cant get my head around! Starts fine, but when i pull off and start driving it: - sounds like its running on 3 cylinders - idles rough when i pull up - hardly any power when accelerating Ive replaced the coil pack and the spark plugs but still no joy. Cant find any obvious vaccum leak either! Its driving me nuts anybody have an idea? RE: Car running rough - andyp - 15:th-May-2018 (14:th-May-2018, 12:34:35)Jake Wrote: Hi there, ive got a problem with my 1.4T that I cant get my head around! Hi could be the maf try unplugging see if it makes a differance RE: Car running rough - Jake - 15:th-May-2018 Have tried unplugging MAF just now, doesn’t change anything except bringing the radiator fan on full speed RE: Car running rough - andyp - 15:th-May-2018 (15:th-May-2018, 11:16:02)Jake Wrote: Have tried unplugging MAF just now, doesn’t change anything except bringing the radiator fan on full speed try a compression test? is the fuel flow good? RE: Car running rough - Jake - 15:th-May-2018 Not sure how I would do one of those tbh, it does sound like its being starved of fuel so I thought maybe injectors need replacing? its a 2013 model which you wouldn't expect to have faulty injectors this early on... RE: Car running rough - andyp - 16:th-May-2018 (15:th-May-2018, 21:44:32)Jake Wrote: Not sure how I would do one of those tbh, it does sound like its being starved of fuel so I thought maybe injectors need replacing? its a 2013 model which you wouldn't expect to have faulty injectors this early on... remove plugs and check colour if one is black sooty fuel problem i.e running to rich if all are maybe overfueling to all cylinders if you can when plugs are out cover plug holes with thumb if possible or screw driver handle and try to feel what compression is like on all cylinders this will involve someone turning engine with key keep out of the way of all moving parts and plug electrical feeds |