Forsaken Cold starts!
#41
Boost Czar
![](/mt2011/images_td/ranks/supporter1.gif)
![](/mt2011/images_td/ranks/admin.png)
iTrader: (62)
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,688
Total Cats: 4,113
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
based on that video, this seems as simple as adjusting the cranking pulsewidth and the cranking rpm. very sounds like it's too rich during cranking, everything good once it catches.
set the cranking rpm to 400rpm.
next cold morning (car really needs to be 100% cold) adjust the cranking PW very low at that temperature range. try to start. increase it until the car starts add a little bit for good measure.
can someone screenshot the cranking PW table for me?
set the cranking rpm to 400rpm.
next cold morning (car really needs to be 100% cold) adjust the cranking PW very low at that temperature range. try to start. increase it until the car starts add a little bit for good measure.
can someone screenshot the cranking PW table for me?
#42
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
![](https://cimg3.ibsrv.net/gimg/www.miataturbo.net-vbulletin/2000x1504/image_72406f778657db0c5814f0d56170c2bd98a72457.jpg)
![](https://cimg5.ibsrv.net/gimg/www.miataturbo.net-vbulletin/2000x1504/image_978a2fd94937d7764ef310e951b6aba7d5ebf295.jpg)
Cranking RPM is already at 400 and bad thing is flood clear won’t work. When I turn the key back to “ON” rather than start, it primes again regardless of WOT clear. The only time my WOT clear works is when I power on the ECU. (ECU is Separate power from ignition switch) The priming pulse is also lowered because it is rich smelling when trying to start
#43
Boost Czar
![](/mt2011/images_td/ranks/supporter1.gif)
![](/mt2011/images_td/ranks/admin.png)
iTrader: (62)
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,688
Total Cats: 4,113
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
flood clear isn't designed to stop the priming pulse, but if you crank it wont inject (so long as it's actually active).
It's been a while, but I think your cranking PW table is simply too aggressive with the fuel. Again, once it catches it's running very well, so it's all about the cranking.
It's been a while, but I think your cranking PW table is simply too aggressive with the fuel. Again, once it catches it's running very well, so it's all about the cranking.
#44
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
Ughh what do you suggest? Less cranking PW? Scale it back by how much? I have read this thread a lot. Bummer he never posted a certain issue/fix. https://www.miataturbo.net/megasquir...e-crank-80800/
#45
Boost Czar
![](/mt2011/images_td/ranks/supporter1.gif)
![](/mt2011/images_td/ranks/admin.png)
iTrader: (62)
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,688
Total Cats: 4,113
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
next time id go to start the car, id literally drag the pw% down to 100% (around the current temperature) and try to start. Then id keep adding until it started, and interpolate the curve a bit based on that value back to the warm temps.
#47
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
Was 53 this morning. Sttarted at 100 cranking pw and worked my way up to almost 300. Nothing changed at all. I’m dumbfounded. Tried some other settings and nothing. Drained my brand new battery :/ this was the coldest the car has probably ever been because I usually keep it in the garage. ... so it didn’t even start at all. Driving the other car to work today 🤯
Thread
Thread Starter
Forum
Replies
Last Post
wkndracr
MEGAsquirt
5
03-10-2014 10:37 AM