Famous 1.8 swap, no spark
 

So I finished up my 1.8 swap yesterday and I've never swapped a motor before, never used tuner studio or ms. I have a ms3x built by brain and a 90 chassis with a 99 JDM 1.8. I loaded a base 1.6 map (that's what I read to do on another post) then changed my injectors to run for 260cc with a required fuel of 11.something. Then whenever I tried to crank the car for the first time it sound weak like it had no power. Tuner studio then blinked on my laptop and said "battery voltage too low". The cars been sitting for 3.5 months with no trickle charge so I figured. Also the innovate MTX-L gauge I installed was reading e9 during crank. Which I found meant low voltage? Anyways, I had my friend pull his car up and try to jump it. We waited a while and nothing changed, still no start, still the code e9. But no more bad voltage reading in MS. Then we grabbed a spark plug I have and pulled the wire for #1 and grounded it against the valve cover. No spark. That's where I left off. If I need to upload a tune or datalog I'd be happy to do so. I've been searching and trying to figure out how but I can't, if someone would be kind enough to tell me how, that'd be great.

Also I was having a bad error on tuner studio where my rpms where at 64,000 (yes 64k rpms super sick redline) but when the car was off. It was all leading back to a notification saying that one pin was already being used by a datalog led. I traced it down to the I/o outputs and it seamed to be the SD card datalogging. So I simply searched for the setting, it was set to always, so I turned it off.

The 1.6 uses external ingnitor for the coils. The 1.8 has them in the coils. May or may not be your problem.

I still have the ingnitor intact. Should I be using the 1.8 coils?

If you are using the 1.6 coils you need the 1.6 ignitor. I somehow pictured you using an entire 1.8 engine complete.

Yeah the ignition system is from the 1.6 except for the cam position sensors and crank angle sensor.

I just did this swap using flyin' miata swap kit so I used the 1.6 coils, no spark, no fuel. Turned out the cam angle sensor and the injectors weren't getting 12V when cranking. I bought a voltmeter which helped me diagnose the problem. I never touched any of the wiring when swapping, don't know what happened but I got them their 12V and the cars been running ever since.

check if they're getting power,

AJ

Thanks for the tip, I can smell fuel so I assume the injectors are getting power. Will check cam and crank sensors tomorrow. Did a composite log today and got zero crank signal and a wack can signal. Maybe they don't have 12v and that's what causing them to go sack.

Something else I did was test spark through tuner studio using the same method you did but without cranking the engine, you can do this in test mode, I was able to get spark with the test mode but not while cranking, which told me my coil pack was working and made my CAS problem apparent.

You can test injectors through megasquirt as well, if that ends up being an issue...

Good luck!

AJ

Yeah I came up with that conclusion yesterday, I tested spark and they fired normal. Lol, that throws me for a loop.