mrt Posted July 9, 2014 Posted July 9, 2014 A week ago I bought my 07 HR back from the guy I sold it to in 2011.Night blue,white seats,Rays etc. It looks and drives as I remember and it should with only 22k miles on the clock. Two days ago I noticed a slightly different feel and can only describe the drive as "lumpy " The tick over has an occasional slight pause and when coasting in gear It feels like an irregular shot of fuel coming in. On acceleration it's smooth and feels over responsive like it's raring to go. No problems at high revs in any gear. I changed the plugs today as they weren,t replaced at the five year mark and it feels slightly better but I know the gremlin is still there lurking. Any one have any suggestions what the problem might be. Many thanks Mrt Posted this in the wrong section earlier...hope this finds the right one Quote
PageyUK Posted July 9, 2014 Posted July 9, 2014 Is the air filter clean and intact? Tried cleaning the MAF? Are there any fault lights or fault codes stored? Quote
350zedd Posted July 9, 2014 Posted July 9, 2014 Are you running on 99 RON fuel ? I noticed mine was a bit hesitant the other week running on 95 RON over in Ireland Quote
Bems Posted July 9, 2014 Posted July 9, 2014 Does it have HFC's of aftermarket air intakes? My HR has the same but only since I fitted these mods. Quote
mrt Posted July 9, 2014 Author Posted July 9, 2014 No mods yet.planning HFCS,s Invidia Gemini exhaust when I get this problem sorted No fault light Fuelled with Millenium 98 Ron Haven,t checked the air filters yet. Will check for stored codes. What,s a MAF ? Get back to you all Thanks guys Quote
mrt Posted July 9, 2014 Author Posted July 9, 2014 Hi guys. Just checked for stored codes .... Non stored. Checked filters...bit of dust and a few dead leaves on the bottom of the unit.Now removed.....can,t see how one might have passed up into the manifold. So, stumped so far. Need to find out what a MAF is now ! Quote
mrt Posted July 9, 2014 Author Posted July 9, 2014 Looked up MAF and that definitely sounds like it could be the cause. Now need to find a decent guide. Quote
PageyUK Posted July 9, 2014 Posted July 9, 2014 Search on here mate. It's Mass Air Flow. It's a sensor. There are guides on here of how to remove and clean. Make sure it is dry before you pop it back in. Also check the Coil packs are secured onto the spark plugs prolerly. Quote
mrt Posted July 10, 2014 Author Posted July 10, 2014 Cheers everyone. Gonna try the cleaning route myself. The coil packs were all replaced correctly. Will let you know if the cleaning works Quote
mrt Posted July 10, 2014 Author Posted July 10, 2014 Good news. Replaced the filters and gave the sensors a clean. Problem solved ! Thanks for the advice everyon 1 Quote
zebedy Posted July 11, 2014 Posted July 11, 2014 just goes to show what a wonderfull site this is !!! Happy Days Quote
mrt Posted July 14, 2014 Author Posted July 14, 2014 Well I thought it was all solved but its still there ! Took it into a local independent with past experience at Nissan. He cleaned the throttle body. re cleaned the mafs and put it on his diagnostic machine... result .. no faults. Now he says that the dual mass flywheel could be the cause so he,s pricing me up for clutch and single flywheel. After reading guides on here , it appears that I may be faced with a similar lumpy feel but with sharper response on acceleration. This is my fifth zed and its the first one causing me grief .. Quote
-Bradders- Posted July 14, 2014 Posted July 14, 2014 Sounds like hea trying to do you out of a few quid if im honest! 1 Quote
mrt Posted July 15, 2014 Author Posted July 15, 2014 agree bradders . I have my suspicions. wish there was a zed specialist up by scotch corner Quote
mrt Posted July 15, 2014 Author Posted July 15, 2014 Scotch Corner is six miles east of Richmond ,North Yorkshire. Quote
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