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ive changed plugs and coil pack and my zafira STILL misses....then runs smt?

how do i find fault ....about car missing heavily...but got new plugs and coil pack....when you turn engine off and restart its ok for a while
clive marsh, September 2009
hii
well took car for another diagnostics? check...came back same 3 faults,which already been fixed.BUT he suggested a oil and filter change,so £30.and 20 mins later .....wait 4 it...car runs a dream so cheesed off because i spent £300.00 on car for nothing lol

clive marsh, October 2009
The next thing to check is the fuel injectors - if you can disconnect the plugs to them and put a resistance meter across the terminals, they should all read the same - typically 16 ohms.

John, September 2009
link Click here to see other fixes for Opel Zafira.