no spark on 1 and 3 log attached - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


MEGAsquirt A place to collectively sort out this megasquirt gizmo

Reply
 
 
 
LinkBack Thread Tools
Old 10-05-2014, 08:40 PM   #1
Newb
Thread Starter
 
Join Date: May 2013
Posts: 9
Total Cats: 0
Default no spark on 1 and 3 log attached

Having trouble getting my miata going again after a head gasket replacement. I verified mechanical timing 3 times. It turns for a little and sounds like it going to catch but doesnt start. I used my timing gun and found out I got no spark on cylinder 1 and 3. Replaced ignition coil, wires, plugs, crank sensor, and cam sensor. I tried loading a few different tunes and the car behaves the same. Still no luck starting. Any and all help appreciated thanks.
Attached Files
File Type: msl 9.30.14 log no start.msl (64.9 KB, 33 views)
File Type: msl 9.30.msl (145.6 KB, 40 views)
Chased is offline   Reply With Quote
Old 10-06-2014, 11:49 AM   #2
Supporting Vendor
 
Matt Cramer's Avatar
 
Join Date: Sep 2006
Posts: 2,266
Total Cats: 51
Default

Why is your MAP sensor reading 150 kPa?
Matt Cramer is offline   Reply With Quote
Old 10-06-2014, 10:17 PM   #3
Newb
Thread Starter
 
Join Date: May 2013
Posts: 9
Total Cats: 0
Default

Thank you sir

I removed the emissions equipment because I didnt think megasquirt used that map sensor. I reinstalled the emissions tonight and took another log. This is on a base map because im afraid one of the old maps might of fried my coilsmap. In despiration I messed up my old maps so much I figure it would be better to start over. I did remember to calibrate coolant, tps ect.

I still need to find out why its reading 150 kpa because I took another log tonight and it still reads high.

That map sensor thats reading 150 kpa is the one attached to the emissions equipment right?
Attached Files
File Type: msl emissions no start 10.6.14.msl (218.1 KB, 44 views)
Chased is offline   Reply With Quote
Old 10-07-2014, 11:37 AM   #4
Supporting Vendor
 
Matt Cramer's Avatar
 
Join Date: Sep 2006
Posts: 2,266
Total Cats: 51
Default

That should be the MAP sensor inside the MegaSquirt, unless you are running a MicroSquirt or MS3-Pro. You first need to calibrate the MAP sensor under Tools -> Calibrate MAP / Baro to get it to read right.
Matt Cramer is offline   Reply With Quote
Old 10-07-2014, 11:28 PM   #5
Newb
Thread Starter
 
Join Date: May 2013
Posts: 9
Total Cats: 0
Default

Ok thank you
I have the diy pnp. I calibrated the sensor to my current local kpa. I have no idea how, but when I went to test spark after the map sensor calibration I got spark on all 4 cylinders. Worried I might have a bad connection somewhere.
Anyway went ahead to set ignition timing and she almost started. It seemed like it wasnt spot on until my trigger angle was -27. Going to lower the cranking pulse width tomorrow and hopefully ill be set.
Attached Files
File Type: msl 10.7.14.msl (490.7 KB, 38 views)
Chased is offline   Reply With Quote
Old 10-08-2014, 10:37 AM   #6
Supporting Vendor
 
Matt Cramer's Avatar
 
Join Date: Sep 2006
Posts: 2,266
Total Cats: 51
Default

Can you also post your MSQ?
Matt Cramer is offline   Reply With Quote
Old 10-08-2014, 10:54 PM   #7
Newb
Thread Starter
 
Join Date: May 2013
Posts: 9
Total Cats: 0
Default

Maybe the timing light didnt fire because the engine was flooded? Anyway I lowered and raised my cranking pulse width but still no start. I left the values where it sounded promising. My car cranks at 180-200 rpm, sounds like it did before but is that a little slow? I have been keeping the car on a battery tender for the last month or so. Right after I built the diiy pnp 6 months ago it fired right up on a base map.

Thanks for your time,
MSQ attached
Attached Files
File Type: msq Barely touched base tune.msq (110.2 KB, 36 views)

Last edited by Chased; 10-08-2014 at 11:05 PM.
Chased is offline   Reply With Quote
Old 10-09-2014, 10:24 AM   #8
Supporting Vendor
 
Matt Cramer's Avatar
 
Join Date: Sep 2006
Posts: 2,266
Total Cats: 51
Default

If you can't get the trigger angle set in the -20 to +20 degree range, set Ignition Input Capture to Falling Edge.
Matt Cramer is offline   Reply With Quote
Old 10-10-2014, 11:05 PM   #9
Newb
Thread Starter
 
Join Date: May 2013
Posts: 9
Total Cats: 0
Default

Thanks,
So yesterday I played around with falling edge with various values from -30 to +30. The car sounded like it wanted to start again but it still wouldnt start. Today I was able to have my gf crank the car so I can look at the crank with a timing light instead of adjusting values blindly and sure enough I had no spark on cyl 1 again. Heres the crazy part. I only had spark on cylinder 4. And each time that cylinder would fire the car would knock like it wanted to start. I even checked the timing light on another car and it worked perfect.
Chased is offline   Reply With Quote
Old 10-13-2014, 12:40 PM   #10
Supporting Vendor
 
Matt Cramer's Avatar
 
Join Date: Sep 2006
Posts: 2,266
Total Cats: 51
Default

What sort of coils are you using?
Matt Cramer is offline   Reply With Quote
Old 10-15-2014, 09:26 PM   #11
Newb
Thread Starter
 
Join Date: May 2013
Posts: 9
Total Cats: 0
Default

Its a factory replacement for a 99 miata.
I just got back in town I figure ill try the old coil tomorrow to see if I still only get spark on cyl 4. I guess I could resistance test them both also, as I am hesitant to buy another.
Chased is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
91 1.6l turbo complete part out. Tony the Tiger Miata parts for sale/trade 63 12-29-2016 03:23 AM
elesjuan's mediocre 95 Miata adventure (google fiber edition) elesjuan Build Threads 8 02-16-2016 09:36 PM
ms2e No Rpm Signal Dobzeh ECUs and Tuning 5 09-17-2015 03:56 PM
Air Coolant Correction 86-145 iparnell MEGAsquirt 2 09-13-2015 08:04 PM
FM 1.8 Mani, Test Pipe, HP+, Injectors Chooofoojoo Miata parts for sale/trade 6 09-13-2015 11:01 AM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 05:51 PM.