spankthemonkey Posted November 29, 2006 Share Posted November 29, 2006 Hi all posting this on behalf of a work colleague, building a Sylva so will let him explain! Story so far: 1400K Series, Jenvey DTH TBs, Emerald ECU, Dizzy, No Immobiliser, beige injectors, standard Rover engine loom less IAVC bit. Loaded 1600ss map suppied with emerald, crank sensor in map has been set up for a 36-2 flywheel which is fitted. TPS has been set up LED on ECU is changing to green on cranking Fuel system is priming +12v supply to injectors, coil etc as expected. Problem is no spark Checked, double checked, and checked again pin wiring to ECU, this is as emerald intended. Have tried temporay earth and live feeds to ECU Have swapped coil, rotor arms, dist cap and leads Still banging my head any ideas? Link to comment Share on other sites More sharing options...
Peter T Posted November 29, 2006 Share Posted November 29, 2006 Are you sure it was not configured to a wasted spark system, and you are only checking the lead on 1+4, try checking lead 2+3 to see if this is the case. R500 Mango Madness Edited by - Peter T on 29 Nov 2006 17:48:20 Link to comment Share on other sites More sharing options...
oilyhands Posted November 29, 2006 Share Posted November 29, 2006 Indeed, also check the RPM from the live adjustments screen to ensure that you are getting a constant 200-350RPM on cranking, if the display alternates between 0 and 250 odd then the tooth pattern may be wrong of the crank sensor up the swanny. Oily Link to comment Share on other sites More sharing options...
spankthemonkey Posted November 29, 2006 Author Share Posted November 29, 2006 Thanks 2 more things to try. It is set up for single coil, on grouped I think the first option in the menu. Will keep you informed Link to comment Share on other sites More sharing options...
Geoff Dixon Posted November 29, 2006 Share Posted November 29, 2006 Check the crank sensor as well, if its worn down the emerald does not get signal so cant send the spark. Link to comment Share on other sites More sharing options...
spankthemonkey Posted November 29, 2006 Author Share Posted November 29, 2006 Hi Have now done as oily suggested, no RPM reading at all on live adjustments when cranking. Does this suggest CPS is up the spout? Have tried on all 3 patterns 36-2 is the only one that turns led green. Tried counting missing teeth looks like 2. Link to comment Share on other sites More sharing options...
Paul Formston Posted November 30, 2006 Share Posted November 30, 2006 Hi Spankthemonkey I had this troubble when I first got my Emerald ECU, My son and I spent two weeks trying to sort it, in the end it was thhe wire down to the Fly wheel pick up senser, do's the light on the end of the ECU box turn from red to green when crank the engine over on the starter if not its not getting a signal so the lead need changing hope this is some help regards Paul Link to comment Share on other sites More sharing options...
spankthemonkey Posted November 30, 2006 Author Share Posted November 30, 2006 *confused*Another session in the garage. £40 lighter for a CPS. I am now seeing 250rpm on the onscreen live readings when cranking. The led is going green on cranking. Still no bl**dy spark. Definately 12v to coil. Does any one know the correct test for the switched earth from ECU to coil? I have put a new wire in this (pin25) Any other ideas for no spark, whole of the HT side is new now. Does the Hz setting on ECU configuration need changing? This is still at default value. Cheers Spank ☹️ Link to comment Share on other sites More sharing options...
old captain slow Posted November 30, 2006 Share Posted November 30, 2006 Would it be worth giving Dave Walker a call at Emerald? He must have come across most problems with K engines. C7 CDW Link to comment Share on other sites More sharing options...
oilyhands Posted December 1, 2006 Share Posted December 1, 2006 A crude way to see if the coil is being switched is to put a bulb in *series* with the coil supply/earth, if it flashes as you crank then the coil is being switched... oily Link to comment Share on other sites More sharing options...
simonbell Posted December 1, 2006 Share Posted December 1, 2006 Check what voltage you are getting when cranking. The Emerald will not fire the coil or injectors if the battery voltage is too low. We have seen this a couple of times. Are you getting fuel out of the injectors. If no fuel and no spark then definitely check the battery voltage. Simon Bell - Caterham 7 Duratec R I`ve seen the future.....and it`s powered by duratec Check out the website here Link to comment Share on other sites More sharing options...
Geoff Dixon Posted December 1, 2006 Share Posted December 1, 2006 I had the same problem it was the crank sensor reading the teeth on the flywheel. Have you checked it - they cost peanuts Link to comment Share on other sites More sharing options...
spankthemonkey Posted December 1, 2006 Author Share Posted December 1, 2006 😬 Hi Everyone All suggestions were pointing to CPS/wiring etc. So having put on new CPS and checking wiring again, I went about counting the missing teeth on the flywheel again, this time I removed the balnking plate instead of trying to look down the sensor hole. Low and behold 4 missing teeth, so my early 1400 engine has a later flywheel. So reset pattern to Rover 2 (36-4) took the plugs out turned over, led red. Set to Rover 3 (36-4) turned over led constant green. Now were talking, connected coil and one plug, spark for the first time. Put in all 4 plugs connected leads, held my breath and turned the key, started first crank, even ticked over. Now have to rebuild my loom etc but very happy, remember the car is in build so this is practically its birth. Big thanks to all who gave suggestions, and all the similar threads, it got me back to basics. To all those that follow, the led must be solid green not green/red. Thanks form Spank and Matt 😬 😬 😬 Link to comment Share on other sites More sharing options...
Peter T Posted December 1, 2006 Share Posted December 1, 2006 sorted now then,always worth double checking the basics. R500 Mango Madness Link to comment Share on other sites More sharing options...
oilyhands Posted December 1, 2006 Share Posted December 1, 2006 Glad it is now sorted, for information.. Using the live adjustments screen to diagnose this sort of problem will get you there much faster. If the RPM reading when cranking dances up and down alternating between 200-300 and 0 then it indicates that the crank tooth pattern is wrong. Intermittent readings usually indicate this, the other possible cause is batterly low/too slow cranking. the live adjustments screen gives all sorts of useful feedback and is easier than trying to spot an LED, especially, if like me, you are colour-blind.. oily Edited by - oilyhands on 1 Dec 2006 22:31:44 Link to comment Share on other sites More sharing options...
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