So this RZR hasnt run right from the time I bought it about a year ago. It seemed like a good deal when I bought it. It ran, but not good. All in all, it idles, but very sluggishly. When I first start it up, it will rev up and is really responsive(when it's primed I'm guessing), but if you let it sit there running for few seconds and then try to rev it up, it starts to spit and sputter. It acts the same when it's in gear. When you first start it up it will run like a champ, but if you wait 10 seconds before you try to go, it will be going about 2 mph while it backfires. It seems that whenever I restrict airflow, it responds a little bit better.
The guy who I bought it from had gotten the cylinders bored out, but I don't think he did anything else to compensate for the larger cylinders, and pistons, and increased airflow. He also put an aftermarket snorkel system on it.
What I know:
The cylinders have been bored out, with oversized pistons.
It's getting the correct pressure (39 psi) at the fuel rail.
Fuel tank, hoses, rail are all clean.
Fuel pump, pressure regulator, fuel screen,and injectors are all new.
Has an aftermarket snorkel system.
What I don't know:
What sized they bored it to.
A lot
I'm not sure how these things are worked on. It has to be fuel related. I just dont know if the ECU needs to be reprogrammed for more fuel, or if I can get a higher-rated fuel pump, pressure regulator or injectors.
I am completely open to any suggestions.
Thank you for any help you can provide
Edit: I had taken it to a mechanic, and he was the one who did the pressure test. He just told me it had the correct fuel pressure
The guy who I bought it from had gotten the cylinders bored out, but I don't think he did anything else to compensate for the larger cylinders, and pistons, and increased airflow. He also put an aftermarket snorkel system on it.
What I know:
The cylinders have been bored out, with oversized pistons.
It's getting the correct pressure (39 psi) at the fuel rail.
Fuel tank, hoses, rail are all clean.
Fuel pump, pressure regulator, fuel screen,and injectors are all new.
Has an aftermarket snorkel system.
What I don't know:
What sized they bored it to.
A lot
I'm not sure how these things are worked on. It has to be fuel related. I just dont know if the ECU needs to be reprogrammed for more fuel, or if I can get a higher-rated fuel pump, pressure regulator or injectors.
I am completely open to any suggestions.
Thank you for any help you can provide
Edit: I had taken it to a mechanic, and he was the one who did the pressure test. He just told me it had the correct fuel pressure