onthatB0MBSHELL Posted July 26, 2012 Share Posted July 26, 2012 Hi All, My Zed is not well, (2004,75,000miles) We havent been able to drive her this last week or more, Have the EML light on steady and sometimes flashing. she is driving pretty rough, feels like a definite misfire. Got a Major service carried out at the local dealership, and they give me codes P0300, P0306. They said i needed a coil pack and also said there was oil around plug 6. They told me what i needed to fix the oil problem,but after a chat with Zmanalex it turns out they havent a clue. I sourced a coil pack and fitted myself to No6, and found no difference, also tried swapping coil packs but no noticeable difference. The car is now with my own mechanic,he has tried the same as me and same result. So, what is the next step? would the injectors cause this problem, is there any way to know for sure if its an injector problem, the code is now just P0300. Is it a trial and error scenario now, should i replace injectors? does any forum members refurbish injectors? has anyone else had the same problem and could advise on steps taken to resolve? sorry for all the questions, but would love her back on the road for Saturday to take us to airport. all help really appreciated. Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted July 26, 2012 Share Posted July 26, 2012 Best to go back to basics. Code P0300 is simply a random/Multiple Cylinder Misfire. Find out whay cyl/cyls are giving the issue. Check connections at coil pack/packs and perhaps have a look at the plug/plugs. When plug/plugs out, run a compression check. If it is fuel related and you have limited knowledge or tools then just swop the injectors round and see if the misfire follows. You don't say if the missfire was there before the car was serviced. Alex Quote Link to comment Share on other sites More sharing options...
onthatB0MBSHELL Posted July 26, 2012 Author Share Posted July 26, 2012 Best to go back to basics. Code P0300 is simply a random/Multiple Cylinder Misfire. Find out whay cyl/cyls are giving the issue. Check connections at coil pack/packs and perhaps have a look at the plug/plugs. When plug/plugs out, run a compression check. If it is fuel related and you have limited knowledge or tools then just swop the injectors round and see if the misfire follows. You don't say if the missfire was there before the car was serviced. Alex Hi Alex, Yeah had the misfire before service, that was one of the reasons to get the Major service. Got all service parts from your good self including plugs, so hopefully not plug related problem. Nissan gave me the 2 codes the multiple misfire and No6 misfire, only getting multiple now. If i cant get a code to a particular cylinder it will be hard to diagnose which injector is at fault if any. with 75,000 on the clock would it be a good idea to replace/refurbish injectors anyway. I run the car on 97RON but i dont know what the previous owner run it on. Thanks for your reply and help. Paul. Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted July 26, 2012 Share Posted July 26, 2012 If you have the miss on tick over it should be very easy to trace what cyl. Isolating the cyls with or without the correct tools is very simple. Have you carried out a compression check as I previously mentioned? If you are leaning to fuel issues then just stick in some injector cleaner, you have nowt to loose. However, best to back to basics and remove the guesswork as this should be easy to trace. Alex Quote Link to comment Share on other sites More sharing options...
onthatB0MBSHELL Posted July 26, 2012 Author Share Posted July 26, 2012 Just thinking out loud now, is the fuel filter on the zed known to give any problems. I understand it is a non-serviceable part that should not need replaced, but just wondering if it can fail/cause problems like im having? Quote Link to comment Share on other sites More sharing options...
onthatB0MBSHELL Posted July 26, 2012 Author Share Posted July 26, 2012 If you have the miss on tick over it should be very easy to trace what cyl. Isolating the cyls with or without the correct tools is very simple. Have you carried out a compression check as I previously mentioned? If you are leaning to fuel issues then just stick in some injector cleaner, you have nowt to loose. However, best to back to basics and remove the guesswork as this should be easy to trace. Alex Thanks Alex, It`s actually quite hard to detect any miss on take over, really feel it though when driving and accelerating. have passed on your info to my mechanic and said to him about pressure test, hes up to his eyes at present so im hoping he can give the Zed some attention soon. Thanks Paul. Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted July 26, 2012 Share Posted July 26, 2012 Just thinking out loud now, is the fuel filter on the zed known to give any problems. I understand it is a non-serviceable part that should not need replaced, but just wondering if it can fail/cause problems like im having? You are guessing again Get a proper professional diagnoses Alex Quote Link to comment Share on other sites More sharing options...
onthatB0MBSHELL Posted July 26, 2012 Author Share Posted July 26, 2012 Just thinking out loud now, is the fuel filter on the zed known to give any problems. I understand it is a non-serviceable part that should not need replaced, but just wondering if it can fail/cause problems like im having? You are guessing again Get a proper professional diagnoses Alex Going to order 6 refurd injectors online that have been through ASNU treatment, can do no harm and my mechanic thinks this is were problem lies. Just a pity we don't have access to dedicated zed garages/tuners as you guys have on the mainland. Quote Link to comment Share on other sites More sharing options...
onthatB0MBSHELL Posted August 14, 2012 Author Share Posted August 14, 2012 My Zed is driving like new again, big thanks to Richard Bradley who is the man that sorted it. replaced 2 of my new plugs with another 2 new ones and replaced 2 injectors. running smooth again Quote Link to comment Share on other sites More sharing options...
350zKid Posted February 10, 2013 Share Posted February 10, 2013 i got the same problem only with clinder number 2 sometimes it runs smooth next time it runs crappy i changed all my sparks plugs and still have the problemen could this also be my injectors? Quote Link to comment Share on other sites More sharing options...
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