JEMAN Posted July 18, 2014 Share Posted July 18, 2014 Hi all. I recently had new plugs fitted to see if it would help the pinking issue. All was ok for a few days, but yesterday on the way home from work it started pinking again. Now the car doesn't pink when cold, and yesterday was very hot, so could heat be the issue as I have a pop charger fitted and have heard that they may not be the best air filter due to the heat from the engine ? A couple of pics to show the filter. My second question is do you think the MAF sensor could also have something to do with it ? I would like to remove and clean it but not sure how easy or hard it is and what to/how clean it......I've got some IPA if that's any good ? The last pic is the MAF (I think). is that the black side bit ? Any help/info would be grateful. Cheers Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted July 18, 2014 Share Posted July 18, 2014 (edited) What makes you think your car is pinking ? Edited July 18, 2014 by ZMANALEX 1 Quote Link to comment Share on other sites More sharing options...
-Bradders- Posted July 18, 2014 Share Posted July 18, 2014 what the hell is pinkling? lol Quote Link to comment Share on other sites More sharing options...
Flex Posted July 18, 2014 Share Posted July 18, 2014 What makes you think your car is pinkling ? He said pinking! Not pinkling. Completely different issue 1 Quote Link to comment Share on other sites More sharing options...
JEMAN Posted July 18, 2014 Author Share Posted July 18, 2014 Hi Zedmanalex, I get this loudish crackling ( with windows open) when accelerating.......not hard acceleration. Only when it's hot though. Any ideas ? Bradders it's the above mate lol, sounds like nails rattling around in the engine every now and then. Quote Link to comment Share on other sites More sharing options...
GMballistic Posted July 18, 2014 Share Posted July 18, 2014 Your last picture is the inlet throttle body JEMAN. The MAF sensor is in the plastic housing just behind your air filter. 1 Quote Link to comment Share on other sites More sharing options...
JEMAN Posted July 18, 2014 Author Share Posted July 18, 2014 (edited) Ah ok......so how does the MAF sensor come out and get cleaned ? Is it fairly easy ? Also do you think disconnecting it will prove anything ? Cheers Edited July 18, 2014 by JEMAN Quote Link to comment Share on other sites More sharing options...
docwra Posted July 18, 2014 Share Posted July 18, 2014 Get it to a Rolling Road and put it on some rollers with a Air/Fuel curve .......... Ill give you £20 if its pinking Heat makes air thinner so theres less chance of running lean, it should be worse when its cold, it would also be worse when on full throttle than anything less. Have you tried unplugging the AFM like suggested last time? Quote Link to comment Share on other sites More sharing options...
M13KYF Posted July 18, 2014 Share Posted July 18, 2014 pinking is the pingy dullish metal sound from the cylinders like tapping a drum stick on a metal block. Its not loud. Bad fuel, timings can be the cause. Cam sensor would be more the cause than MAF sensor. Would need a video to diagnose the sound properly. I suspect you have something else. Maybe something loose around the Air Cone filter Cleaning guide for The MAF senor is in the guides section. The MAF can be seen on the first pictureto the left of the Cone filter. The plug that has a lead running to it. Quote Link to comment Share on other sites More sharing options...
GMballistic Posted July 18, 2014 Share Posted July 18, 2014 Ah ok......so how does the MAF sensor come out and get cleaned ? Is it fairly easy ? Also do you think disconnecting it will prove anything ? Cheers The MAF sensor is held in by Torq security type screws ~ you will need a Torq set like below to remove it... I cleaned my MAF sensor years ago and I believe I used brake cleaner to do it back then. Sorry it's been a while. You need to be careful though as it's very easy to damage if you're not careful and a fairly expensive part. Found this video from Youtube as a cleaning example. No idea if it will make a difference though to the problem you're having but can't hurt to try it. FYI ~ make sure you disconnect the battery first before you unplug the MAF. 2 Quote Link to comment Share on other sites More sharing options...
KyleR Posted July 18, 2014 Share Posted July 18, 2014 Don't issues with the MAF usually throw up the CEL? Quote Link to comment Share on other sites More sharing options...
docwra Posted July 18, 2014 Share Posted July 18, 2014 Don't issues with the MAF usually throw up the CEL? Not if its just misreading, no. Interestingly enough MAF/AFM faults dont always appear on OBDII either. Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted July 18, 2014 Share Posted July 18, 2014 what the hell is pinkling? lol Sorry my bad, now sorted Quote Link to comment Share on other sites More sharing options...
gareth29 Posted July 18, 2014 Share Posted July 18, 2014 what the hell is pinkling? lol If I'm mot wrong (and it has been known) pinking is the sound you can hear when the fuel air mixture in the cylinders detonates (like a diesel), instead of burning rapidly and it can wreck your engine eg put a hole in the top of the piston! Its usually most noticable when the engine is under load eg when going up a hill in a highish gear, putting your foot down will make it pink badly if there is a problem. Common cause on older cars was ignition timing being out, with the Z I guess you could still get that but it may mean something was awry with sensor or the ecu (off the top of my head!!!) Pinkling now, is that still legal? 1 Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted July 18, 2014 Share Posted July 18, 2014 (edited) Hi Zedmanalex, I get this loudish crackling ( with windows open) when accelerating.......not hard acceleration. Only when it's hot though. Any ideas ? Bradders it's the above mate lol, sounds like nails rattling around in the engine every now and then. Probably a loose heat shield or similar. Doubt if it is pinking, but if it is I would not drive it under load. The best way to describe pinking as some one posted recently, is it sounds like a skeleton having a w#nk inside a tin can. Edited July 18, 2014 by ZMANALEX 3 Quote Link to comment Share on other sites More sharing options...
Ebized Posted July 18, 2014 Share Posted July 18, 2014 The best way to describe pinking as some one posted recently, is it sounds like a skeleton having a w#nk inside a tin can. Now I get where the expression having a boner comes from Quote Link to comment Share on other sites More sharing options...
JEMAN Posted July 18, 2014 Author Share Posted July 18, 2014 (edited) Cheers guys.....live removed MAF and cleaned it, I used IPA as this cleans components ETC and I didn't touch the wires just slushed it around for a bit. Now fitted back on so this properly won't make any difference but well worth a try anything else anyone can think of ? I'll try to under to look at heat shield but not really sure what to look for........I'll google to see where it is. Edited July 18, 2014 by JEMAN Quote Link to comment Share on other sites More sharing options...
a2orry Posted July 18, 2014 Share Posted July 18, 2014 Hi Zedmanalex, I get this loudish crackling ( with windows open) when accelerating.......not hard acceleration. Only when it's hot though. Any ideas ? Bradders it's the above mate lol, sounds like nails rattling around in the engine every now and then. Probably a loose heat shield or similar. Doubt if it is pinking, but if it is I would not drive it under load. The best way to describe pinking as some one posted recently, is it sounds like a skeleton having a w#nk inside a tin can. that's what I was thinking probably the cat's or y pipe heat shield. Quote Link to comment Share on other sites More sharing options...
Daveyboy11 Posted July 18, 2014 Share Posted July 18, 2014 Sorry to hijack this a bit but is it possible to have no MAF sensor? My car came with an induction kit when I bought it and I can't see it. Quote Link to comment Share on other sites More sharing options...
Toon Chris Posted July 18, 2014 Share Posted July 18, 2014 I thought the knock sensor was the equivalent of the 'pinking' sensor in that it detected pre-detonation and retarded the ignition to suit? If that has failed then there should be a CEL warning unless some helpful soul has removed the bulb before you bought the car. I take it the engine light come on when you first turn the ignition on? My money is on a heat shield too. Most have mine have come loose and been wired back on over the years. Quote Link to comment Share on other sites More sharing options...
GMballistic Posted July 18, 2014 Share Posted July 18, 2014 Sorry to hijack this a bit but is it possible to have no MAF sensor? My car came with an induction kit when I bought it and I can't see it. It is possibly to run without a MAF as I did on my old Impreza but I believe you would need an upgrade ECU to do this which is what I had. I would imagine it's highly unlikely your Zed is MAF-less tbh though. Do you have any pictures? Quote Link to comment Share on other sites More sharing options...
docwra Posted July 18, 2014 Share Posted July 18, 2014 Sorry to hijack this a bit but is it possible to have no MAF sensor? My car came with an induction kit when I bought it and I can't see it. It is possibly to run without a MAF as I did on my old Impreza but I believe you would need an upgrade ECU to do this which is what I had. I would imagine it's highly unlikely your Zed is MAF-less tbh though. Do you have any pictures? You would have had a MAP sensor then, its not possible to run a modern engine without some kind of air metering ............ unless you unplug the thing of course. If the car is still "pinking" with it unplugged then its not pinking at all. For the third and final time Quote Link to comment Share on other sites More sharing options...
Daveyboy11 Posted July 18, 2014 Share Posted July 18, 2014 Sorry to hijack this a bit but is it possible to have no MAF sensor? My car came with an induction kit when I bought it and I can't see it. It is possibly to run without a MAF as I did on my old Impreza but I believe you would need an upgrade ECU to do this which is what I had. I would imagine it's highly unlikely your Zed is MAF-less tbh though. Do you have any pictures? OK so say the previous owner fitted the induction kit and left off the MAF sensor what would happen? I will take some and get them up! Quote Link to comment Share on other sites More sharing options...
GMballistic Posted July 18, 2014 Share Posted July 18, 2014 Sorry to hijack this a bit but is it possible to have no MAF sensor? My car came with an induction kit when I bought it and I can't see it. It is possibly to run without a MAF as I did on my old Impreza but I believe you would need an upgrade ECU to do this which is what I had. I would imagine it's highly unlikely your Zed is MAF-less tbh though. Do you have any pictures? You would have had a MAP sensor then, its not possible to run a modern engine without some kind of air metering ............ Yep you're correct. I can't remember everything I paid for to be put on that darn Impreza. Literally just chucked money at the garage and said make it faster. OK so say the previous owner fitted the induction kit and left off the MAF sensor what would happen? I will take some and get them up! Not sure it would run correctly at all ~ as docwra mentioned it would need a MAP sensor. Pictures would help. Quote Link to comment Share on other sites More sharing options...
a2orry Posted July 18, 2014 Share Posted July 18, 2014 Sorry to hijack this a bit but is it possible to have no MAF sensor? My car came with an induction kit when I bought it and I can't see it. oem maf is at the top of the pipe chances are it is underneath at the bottom of the pipe some induction kits allow this to happen. Quote Link to comment Share on other sites More sharing options...
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