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Old 08-22-2015, 03:58 PM   #1
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Default Strange spark at start

Greetings!

Recently i have swaped a 01 automatic 1.8 vvt engine into NA chassies Miata/mx5 (EUDM 1.6 98')
I'm using MS3 from extraEFI and lc2 wideband, other that that engine is completly stock with 1.6 coils.
I'm complete noob in the MS field so please excuse if this is stupid but, when i turn the key to give contact ( when the fuel pump starts ) i get the spark from the sparkplugs,
but when i'm cranking the engine there is no spark at all.
Also there is "no rpm sync" colored red at all times during the MS3 is powered up.
I have base map loaded on the MS that came with it, i only changed minor settings about what i have and dont have, and inverted spark to NO, since the last setting fried my coils.
The other thing i noticed is that he test mode doesnt seem to be working, i have folowed the instructions from msextra PDF and i dont get any fedback when cranking!

Any ideas on what am i doing wrong?

msq in attachment

Thanks!
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File Type: msq 2015-08-22_20.46.57.msq (223.4 KB, 87 views)
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Old 08-22-2015, 04:47 PM   #2
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Any support from extraEFI?
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Old 08-22-2015, 06:21 PM   #3
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No reply yet, was hoping on getting the answer here sooner
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Old 08-23-2015, 05:13 AM   #4
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If you don't get a sync, don't expect it to start sparking either.
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Old 08-23-2015, 01:36 PM   #5
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Default Strange spark at start

Strange spark at start? How about no spark at start.


Take composite logs during cranking and post them please
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Old 08-23-2015, 05:23 PM   #6
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Well there is a spark at key-on..but no at cranking.
i get 4.9v reading at cam and 3.6v at cas, but no rpm reading in MS3.
Composite log in attachment.
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File Type: msl 2015-08-23_18.35.46.msl (218.4 KB, 71 views)
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Old 08-29-2015, 04:07 PM   #7
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Hey folks!

So recently durring the wire check on my car i found some sort of switch under the dash instaled by previous owner. The thing is that in one position of the switch the fuel pump engages and thats it..if i move to other position, fan goes crazy and sparks are putting spark continuosly, but no fuel pump engaging.

Now i have i composite of the state where it engages fuelpump, kinda scared to do it with sparks going crazy..
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File Type: csv 2015-08-27_16.47.28.csv (60.6 KB, 32 views)
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Old 08-31-2015, 11:53 AM   #8
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It doesn't seem to be getting the CKP signal, but is getting CMP. How is your board set up for crank input?
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Old 09-14-2015, 01:51 PM   #9
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Cant tell, is there any way to check it?
I do have a seperate pin for Cam inn if that helps anything?
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Old 09-15-2015, 09:19 AM   #10
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You may have to take off the lid and have a look.
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Old 09-15-2015, 06:38 PM   #11
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ok so i have my MS3 opened up infront of me, but since i have only basic knowledge of electronics i have no idea on what to look for. Are there any schematics or pictures on how the board should be set for crank input?
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Old 09-17-2015, 10:40 AM   #12
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What main board do you have?
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Old 09-28-2015, 01:55 PM   #13
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Board is v3.0
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Old 09-28-2015, 05:36 PM   #14
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Check where they have set TachSelect (lower right hand corner) and TSEL (in the middle of the board). What's wired to them?
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