Megasquirt MS3X KA24DE wont start

Discussion about ECU Tuning Products and Theories
D21turbo
Learners Permit
Posts: 14
Joined: Sun Jun 21, 2020 12:19 pm
Location: Austin, TX

Re: Megasquirt MS3X KA24DE wont start

Post by D21turbo » Thu Aug 13, 2020 3:43 pm

So, you got it running now?
- Greg

Johnny240
Driving Mom's Station Wagon
Posts: 24
Joined: Tue Jul 07, 2020 7:16 pm

Re: Megasquirt MS3X KA24DE wont start

Post by Johnny240 » Thu Aug 13, 2020 3:47 pm

D21turbo wrote:
Thu Aug 13, 2020 3:43 pm
So, you got it running now?
Not yet. After fixing a fuel pressure issue, my wideband was also bad, so I am waiting on it to get here before I can try and start this thing.

mfschoenberg6522
NooB
Posts: 5
Joined: Mon Oct 12, 2020 1:40 pm

Re: Megasquirt MS3X KA24DE wont start

Post by mfschoenberg6522 » Tue Oct 20, 2020 8:11 am

I assume you removed the DIY Quadspark, when you went with '01 Maxima "smart" coils?

Looking to go COP on an S14 KA24DE as well.

Johnny240
Driving Mom's Station Wagon
Posts: 24
Joined: Tue Jul 07, 2020 7:16 pm

Re: Megasquirt MS3X KA24DE wont start

Post by Johnny240 » Sat Oct 31, 2020 6:46 pm

mfschoenberg6522 wrote:
Tue Oct 20, 2020 8:11 am
I assume you removed the DIY Quadspark, when you went with '01 Maxima "smart" coils?

Looking to go COP on an S14 KA24DE as well.
I did remove the quadspark. I wired coils directly into the ms3x. I have the documentation downloaded if you are unable to find it online.

Johnny240
Driving Mom's Station Wagon
Posts: 24
Joined: Tue Jul 07, 2020 7:16 pm

Re: Megasquirt MS3X KA24DE wont start

Post by Johnny240 » Sat Oct 31, 2020 6:51 pm

D21turbo wrote:
Thu Aug 13, 2020 3:43 pm
So, you got it running now?
I finally got the thing to run but I am having issues setting up my injectors correctly as well as finding a very large vacuum leak. My throttle body shaft seals were bad so I fixed that. I need to do another smoke test.

I starts and idles at about 1500 rpm at 17+ AFR. Ive spent all of september and october trying to figure this out pretty much. The thing right now is that I am not entirely sure if I am reading the specs for my injectors correctly.

I am going to start a new thread to ask questions because I dont get emails from this one anymore.

NukeKS14
240sx Wannabe
Posts: 109
Joined: Thu Jan 09, 2020 8:33 pm
Location: Northeastern KS

Re: Megasquirt MS3X KA24DE wont start

Post by NukeKS14 » Sat Oct 31, 2020 10:05 pm

Where did you get the 910cc injectors? Company/brand. Maybe we can help with your dead time and offset curve.

Johnny240
Driving Mom's Station Wagon
Posts: 24
Joined: Tue Jul 07, 2020 7:16 pm

Re: Megasquirt MS3X KA24DE wont start

Post by Johnny240 » Sat Oct 31, 2020 10:12 pm

NukeKS14 wrote:
Sat Oct 31, 2020 10:05 pm
Where did you get the 910cc injectors? Company/brand. Maybe we can help with your dead time and offset curve.
They are actually Siemens Deka IV 875CC injectors. This and other updated information is in a new thread I created because my issue is now different than what it was when I started this one.

Here is the link to it:
viewtopic.php?f=36&t=64299

After going through the documentation, I now know more about the car. The owner was giving me wrong info on parts for some reason. I had to go through the receipts.

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