Craig_09 Posted May 31, 2014 Report Share Posted May 31, 2014 Hi, got a BMW 330cd with 83,000 miles. Swirl flaps blanked, egr bypass (fault on dash) until I get it mapped out. Only the egr fault in inpa memory. When the car is HOT, sometimes it takes a little longer to start and when it does sometimes sounds like its running rough and on less cylinders and cuts out. It will then restart as normal. Car runs perfectly, full power no smoke etc. only on rare occasions it does this. From cold start sometimes the idle is up and down very slight (I'm fussy). I've run inpa for first time and get: Cold Start idle: Idle 5 minutes after startup Driving Hard driving Just wondering if injector 6 needs replacement? Always in the green during driving but in the red during idle. Also my Nominal air mass is always different to actual? What does this mean? Thanks Link to comment Share on other sites More sharing options...
marc l Posted May 31, 2014 Report Share Posted May 31, 2014 Sounds like injectors to me. If you remove them you can get them tested Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
CharlE46 Posted May 31, 2014 Report Share Posted May 31, 2014 I had an injector that started out similar to yours with no running issues or error codes, over the space of about 4 months it got worse with the selective mass output up to +5.10! when cold. Start up became really lumpy with a lot of smoke, once warm it ran fine and the S/M output was back within the set parameters like yours, error codes are now present. I've just spent today swapping my injector for a known good replacement, had I been in the position to take the car off the road for a week I would have sent them all off for a full test/clean at Injectortune, costs around £160ish with return post and they have a good reputation. Good luck with yours Link to comment Share on other sites More sharing options...
JasonK Posted May 31, 2014 Report Share Posted May 31, 2014 Nominal air mass being greater than actual is normal, as you have your EGR blanked. CharlE46 1 Link to comment Share on other sites More sharing options...
CharlE46 Posted May 31, 2014 Report Share Posted May 31, 2014 Fired the car up, started straight away with no smoke or roughness, plugged the laptop in and cleared the errors, nothing has come back and all M/S levels are bang on again... Happy days Craig I got my injector from a breakers on ebay and only cost £45 delivered, you need to make sure you get the exact same part number as there seem to be loads of different variants. In my search for resolving this coding the injector was mentioned a few times, I can confirm if you change one it doesn't bring up any errors or running problems. As you've already got INPA you can change the injectors IMA easily anyway, took me all of 10 seconds. How it was And now after the injector change Link to comment Share on other sites More sharing options...
Craig_09 Posted May 31, 2014 Author Report Share Posted May 31, 2014 Jason, thanks for reply I'll reconnect egr tomorrow and see if actual air mass goes the same as nominal CharlE46 .Thanks a lot for the detailed reply your scenario sounds the same as mine and glad you got it fixed! Is that injector tune a well known company by you or someone local to you? I think I'll get all 6 cleaned. Thanks Link to comment Share on other sites More sharing options...
CharlE46 Posted May 31, 2014 Report Share Posted May 31, 2014 Pleased I could help I've not personally used injectortune before but do know people that have from when I was driving E30's (they're a sponsor over on e30zone.net) and they do offer a good service and can give you all the before and after data from the tests so you can see what's been done and how much the cleaning process has improved them. Prior to me changing this one I was looking at getting mine cleaned but the weather put a stop to it (no luxury of a garage), this is the reply I had from them when I inquired which I will be doing later on this year. "Hello Charlie. The price for a strip/clean/rebuild of your 6 injector nozzles will be £155 including return postage. This will address problems caused by grime/sludge etc but not problems caused by mechanical wear or electrical failure. Alternatively, we can supply and fit 6 x new nozzles for around £390 including return postage (£280 if pattern nozzles are available, though we will only know if they are after stripping your injectors). A competent mechanic or automotive electrician will be able to advise suitability of this service for your own needs. Turnaround is presently 3 working days from receipt. Regards James." Looking at the prices of refurbed injectors even the cost with new nozzles on the above quote is good Are you going to be doing the hard work and get them out or pay a garage? Charlie Craig_09 1 Link to comment Share on other sites More sharing options...
Craig_09 Posted May 31, 2014 Author Report Share Posted May 31, 2014 I've taken the inlet off before to fit swirl flap blanks but have never done injectors but yeah I will try and do them myself (praying their not seized) I just emailed injector tune for a quote before I read your post. I presuming if they are too worn their test will show this? For £155 I think its worth doing rather than changing the 1 faulty one as I've got another car to use while I wait. Was your mpg affected by the 1 injector being out? I'm presuming not in my case as when I drive the car the injector runs in the green region. Thanks CharlE46 1 Link to comment Share on other sites More sharing options...
The_Judge_ Posted May 31, 2014 Report Share Posted May 31, 2014 (edited) I had an inpa reading of +5.95 recently and a lot of rough idle errors. If you can get the injector out yourself then I would say get it cleaned, I've heard good things about injector tune too. I basically was too scared to attempt the job, and with my readings so high suspected a faulty injector rather than requirement to clean. If you're unlucky like me, the entire job took my mechanic 7hours even with a slide hammer. My replacement injector cost me 200 even though it was a refurbed one from GSF Car Parts. Lucky for me I get on well with my mechanic and so didn't pay for 7 hours labour.... Edited May 31, 2014 by The_judge aka Suf Link to comment Share on other sites More sharing options...
Craig_09 Posted May 31, 2014 Author Report Share Posted May 31, 2014 The_judge aka suf ... 7 hours that could of been very expensive!, I take it your cars running smooth again? CharlE46- Do you have to remove the inlet manifold to remove the injector? Any special tools I might need or any tips or advice? Thanks Link to comment Share on other sites More sharing options...
CharlE46 Posted June 1, 2014 Report Share Posted June 1, 2014 I'm sure if you send them to injectortune and one (or all) of your injectors turns out to be worn then they'd give you a call, yours is low mileage though so I'd expect them to just need a clean. I can't really comment on MPG as mine had a faulty thermostat which did have an impact on it, like yours when driving it brought the values back into the correct parameters so don't think it made any real difference. Yes you do need to remove the manifold to get easy access to the injectors and pipework. The only tip I can really offer is get some good penetrate spray (I use the 3 in 1 professional that halfords sell) and give the injectors a squirt and leave for an hour or so, For me the most time consuming part was getting to the injectors but as you've had the manifold off before you know what you're doing. I had a mare getting the manifold off as clearance is tight against the bulkhead and after struggling to get it off I realized you could remove the bulkhead cover doh!!!! Tool wise apart from having a socket set along with a tx30 & e6 (female socket of the tx range) and a torque wrench that can go down to 10-20nm you should be ok... that is if your injectors come out easily. For any stubborn injectors you can get a tool that screws into the top of the injector that connects to a slide hammer, I'd give them all a go before buying anything special. When I did mine I loosened 2 other injectors and both wiggled freely enough to get out and my car is on 150,000! I do think when I remove all 6 I'll buy the slide hammer and injector adapter just incase (I love an excuse to buy new tools) HTH Charlie Link to comment Share on other sites More sharing options...
The_Judge_ Posted June 1, 2014 Report Share Posted June 1, 2014 The_judge aka suf ... 7 hours that could of been very expensive!, I take it your cars running smooth again? CharlE46- Do you have to remove the inlet manifold to remove the injector? Any special tools I might need or any tips or advice? Thanks Yeah, my car is much smoother and quieter, took it on my first motorway run since the job on Friday evening, quite pleased. There is a definite mpg increase but I'll calculate that accurately next time I refuel. My car is from 2002, and approx 130k mileage, which could have explained why the job was so tough. He basically connected my slide hammer to the injector and his engine hoist to the slide hammer, the job started off with both front wheels an inch off the ground. He basically sprayed with penetrating fluid, let it soak, knocked the injector out slightly, then repeated...... Given the experience I've given up on the idea of removing the other 5 and getting them cleaned, I've been experimenting with Diesel Rhino and Shell Nitro V+ I remember reading that coke has a simikar penetrating effect! I find this guide when I was planning to do the job myself :http://www.bmwforums.info/guides-how-tos/4945-changing-injectors-m57-engine-n2-m47-lots-pictures.html CharlE46 1 Link to comment Share on other sites More sharing options...
Craig_09 Posted June 1, 2014 Author Report Share Posted June 1, 2014 Thanks a lot guys! Moving home this week so will tackle this in the next week or so.. Will update the thread with my progress CharlE46 1 Link to comment Share on other sites More sharing options...
