I have changed the plugs, leads and airfilter on my corsa and it still doesnt fire quite right. I have also used additives to clean injector as its a Single point injection on this one.
I also use only decent fuel in it!!
Oil is old though and I am getting a oil change done on it asap.
does it misfire on idle and under load.are the plugs correct type, is the plug gap set right. have you got a good spark on all plugs.check all pipe work on fuel system for air leaks,blockages or perishing,even very small nicks can cause big probs.look for any air leaks around the inlet manifold,throttle body etc.may be able to hear air leak under bonnet.
xs11
February 2010
Could have some water in your fuel tank. Let it get well down then drain the tank (water sinks to the bottom). Refill with fresh fuel, renew your fuel filter (if fitted), and don't run about nearly empty. That'll keep condensation to a minimum.
Of course it may be something else, but that's my idea.
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