Y23DRH Posted September 12, 2013 Share Posted September 12, 2013 (edited) Car was running fine then had service and both rocker covers replaced due to oil leaking down to the spark plug Has had new spark plugs Oil filter Fuel filter Fresh oil change Plus many more bits All back togeather and has developed missfire All plugs checked for spark amd are fine and correct plugs for the car Also all coil packs are fully working aswell Checked all semsor pluged back in and oil hoses etc But still has missifre and is over fueling Got mobile diagnostic chap comeing in the next few hours to have plug it in but does any one have any ideas what it could be Any help would be very apprecitaed Its a 05 350z roadster gt vq35de Edited September 12, 2013 by F4ABP Quote Link to comment Share on other sites More sharing options...
KyleR Posted September 12, 2013 Share Posted September 12, 2013 Are you sure coil packs for cylinder 4 and 6 are connected to the correct plugs? Very common to mix those 2 up. Quote Link to comment Share on other sites More sharing options...
Y23DRH Posted September 12, 2013 Author Share Posted September 12, 2013 (edited) Are you sure coil packs for cylinder 4 and 6 are connected to the correct plugs? Very common to mix those 2 up. Yea double checked them and there all in the correct order :/ Missfired from the moment the car starts up Was running and driveing fine before hand Just needed service and new plugs and few other bits Cheked every thing i can on the car made sure all the plugs are pluged in etc and also all sensors are pluged in Edited September 12, 2013 by F4ABP Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted September 12, 2013 Share Posted September 12, 2013 (edited) Dan, Back to whoever fitted the parts or whoever supplied the parts or both: Simples: Alex. Edited September 12, 2013 by ZMANALEX Quote Link to comment Share on other sites More sharing options...
M13KYF Posted September 12, 2013 Share Posted September 12, 2013 faulty spark plug perhaps Quote Link to comment Share on other sites More sharing options...
Y23DRH Posted September 12, 2013 Author Share Posted September 12, 2013 Dan, Back to whoever fitted the parts or whoever supplied the parts or both: Simples: Alex. My brother done the work hes a mechanic with his own place etc but he has not charged me for any of the work yet got chap coming to plug the car in shortly so will see what that comes up with Quote Link to comment Share on other sites More sharing options...
Y23DRH Posted September 12, 2013 Author Share Posted September 12, 2013 faulty spark plug perhaps Yea could be there brand new but i guess its a possibility but i would have to be really unlucky to have dodgy new spark plug :/ Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted September 12, 2013 Share Posted September 12, 2013 Perhaps wrong spark plugs ? Or what KyleR has said: Number 4 and 6 mixed up. Just swop 4 and 6 and see what happens. Alex. Quote Link to comment Share on other sites More sharing options...
Y23DRH Posted September 12, 2013 Author Share Posted September 12, 2013 Perhaps wrong spark plugs ? Or what KyleR has said: Number 4 and 6 mixed up. Just swop 4 and 6 and see what happens. Alex. Swapped 4 and 6 and makes it run even worse :/ Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted September 12, 2013 Share Posted September 12, 2013 Wrong plugs then ? Quote Link to comment Share on other sites More sharing options...
Y23DRH Posted September 12, 2013 Author Share Posted September 12, 2013 I was given NGK R laser platinum PLFR5A-11 6240 Quote Link to comment Share on other sites More sharing options...
Y23DRH Posted September 12, 2013 Author Share Posted September 12, 2013 Sorted the diagnostic come back as fuel injector 4 not working Quote Link to comment Share on other sites More sharing options...
KyleR Posted September 12, 2013 Share Posted September 12, 2013 Oooaaffff!! ^^^ plenty in stock, same day/next day despatch Quote Link to comment Share on other sites More sharing options...
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