I have a Mk3 astra,started getting a miss when I start it cold.It also happen's at start up hot too
So I replaced the spark plugs & noticed that no3 was a bit darker than the rest with a bit oil around the thread,could this be were my problem lies?
The motor has 102,000 klms & has been serviced every 7500 klm's also pretty standard except for a new airfilter & a 4-2-1 headers with a new back box.
What' annoying though is as soon as I start driving it disappears
Hot or cold
Maybe someone can shed some light on this for me
Thanks, never replaced lead's but will have a good look when I get it home. Do the coolant sensors fail very often? I had an aircon hose rest up against the exhaust & burn thru, ever since then the radiator fan operates constantly, do ya think it may be running a bit cool & causing associated problems elseware?
Thank's again Josh