Hello all, I have a Heli CPYD35-TY5 LPG forklift that cranks but will not start. I have a few identical models that I have tried swapping parts with in hopes of getting that one that wont start up and running, but to no avail.

I have tried swapping the computers, regulator, carburetor, the entire wiring harness, and I am stumped. There definitely is spark and I've put a new battery and tank. No codes are coming up either. I've had a few local forklift mechanics with good reputations come and have a look, but they've been unsuccessful and have just left me with steep bills.

After reading online some people said to just try replacing the fuel hose for what its worth, but we've already checked that fuel is passing through.

Any ideas what the issue could be or something to try? Thanks in advance.