Big day.
Gonna try to fire up the motor!
I started the night by running to the gas station to get a gallon of gas. And some snacks.
I got back to the shop and unhooked everything from the bench and cleaned up the wiring so nothing was touching the hot or spin-y bits.
Then I rolled it over close to the door for final setup. I still needed to hook up all the fuel and water stuff.
I started with the radiator. I’d already cut the hoses to size, so this was pretty simple to just hook up the hoses, fill with water (holding the upper hose nice and high and filling through there), and tighten the clamps.
Then it was on to the fuel. As previously written, I had the pump/”tank”/regulator/filter all set, I just needed to run it to the fuel rails and test.
I originally wanted to try running the fuel pump on the variable power supply, just so it didn’t go crazy with the full battery power applied, but that couldn’t supply enough power.
So I just hooked it up to the battery.
No problem.
I had to adjust the regulator a bit to get to 50 psi, but no drama there. I kept the fire extinguisher close, though. No need to tempt fate.
With that, it was time to turn the key!
Nik helped me roll it outside so as not to fill the shop with fumes.
Well, it cranked, but no fire.
I did get some pops and bangs with lots of black smoke, but it never quite fired up. It would catch a little, pop, bang, smoke, then crank, crank, crank.
The LambdaTargetCrank Table was set at 0.2, which is crazy rich, but that’s just for cranking RPM. There are a couple other tables that adjust (add) fuel for cold temperatures, both air and coolant, so I messed with those a bit, to no avail.
I called RYEPhil (snappy phone support, for sure) who asked what the injector pulse width was.
75ms
“No way, that’s insane, it should be like 10”.
So we talked through a bunch of stuff and made a bunch of changes (crank tables, VE tables, etc). That put the pulse width closer to 15ms.
Now it cranked and didn’t pop or bang or smoke or catch at all. Just cranking with no action. What does he know anyway?
So I cranked all the fuel back into the map and added a little extra.
Now I got some BIG POPS and smoke and at one point, fire in the intake manifold.
Okay, clearly I have something else wrong here. I double checked the timing and it looked correct.
It was getting late and I was a bit frustrated, so I packed it up for another time. I’d saved the logged data (from over 30 attempts) to look over later, so maybe I’ll get a clue from that.
Bummer that I didn’t get it running, but it seems like I’m juuuuuust missing something in the software….
Thanks for reading!
damen
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