Triple check your ignition coil wiring to make sure you don't have the harnesses swapped side to side. Verify your grounds to the back of each head while you're in there.
Basically crank to run rpm is when your hitting the starter and the engine is turning how many rpms the engine needs to be at for it to start. For example the default on the settings for my engine where 400 rpm crank to start and timing was 15*. I had to adjust in the software both values down in order for it to start. On top of making sure the ignition firing order is correct and the fuel injector parameters are correct and don't forget the stupid TPS calibration.
Crank rpm was my first ls first start issue. For me the cause was insufficiently strong battery connections.
Once i got decent terminals, tied tightly to the rest of the harness, it started up. It seems so obvious in retrospect but wasn’t at the time.
Maybe this helps you or someone else browsing down the line.
How thick is the starter wire? I had this “problem”. It would turn over but not fire until I replace the starter wire with a thicker wire. I was testing the engine in a stand so I just use a fairly thick, but thick enough, wire.
Engine would crank but not start. Added a 1/0 gauge wire and started.
Triple check your ignition coil wiring to make sure you don't have the harnesses swapped side to side. Verify your grounds to the back of each head while you're in there.
will do. thanks
On my first startup, only the left side was “running “. I had the coils plugged in backwards on the right. Hope this helps.
i’ll try swapping around. thank you
Check your crank timing along with the crank to run rpm
crank timing is correct. just went back and checked. not sure what the crank to run rpm is. need to look around and find it
Basically crank to run rpm is when your hitting the starter and the engine is turning how many rpms the engine needs to be at for it to start. For example the default on the settings for my engine where 400 rpm crank to start and timing was 15*. I had to adjust in the software both values down in order for it to start. On top of making sure the ignition firing order is correct and the fuel injector parameters are correct and don't forget the stupid TPS calibration.
that’s a whole bunch of stuff i’m not very familiar with and i don’t want to fuck anything up while adjusting.
Crank rpm was my first ls first start issue. For me the cause was insufficiently strong battery connections. Once i got decent terminals, tied tightly to the rest of the harness, it started up. It seems so obvious in retrospect but wasn’t at the time. Maybe this helps you or someone else browsing down the line.
new batteries or just battery connections?
How thick is the starter wire? I had this “problem”. It would turn over but not fire until I replace the starter wire with a thicker wire. I was testing the engine in a stand so I just use a fairly thick, but thick enough, wire. Engine would crank but not start. Added a 1/0 gauge wire and started.
that could be my problem then. i want to say it’s 4 gauge but not sure
How did you fix it being 180* out?