Good afternoon all,
I'm hoping for a little direction. I have an '02 Chap 230ssi with a VP 5.0GXi-A hooked up to their DP-SM drive. Engine numbers - 4012050911; 3869116 and drive 4202037752; 3868913. This boat is new to me, June this year, and it is my first fuel injected boat. I noticed the hesitation when I water tested, but it had been sitting with old (6-12 month) fuel. 400 hours on motor, and other than fluid changes, not much maintenance done. I have done the following in an effort to bring the maintenance up to date, and get rid of the hesitation.
1. replaced cap & rotor - were moderately corroded, but no help
2. plugs and wires - appeared original, plugs showed normal wear - were gapped anywhere from 48 - 58, set mine to 60
3. fuel cell, disassemble, clean all screens, water ports, new filter - old filter had no water at all surprisingly
4. though batteries and connections looked pretty nice, cleaned reattached securely, and checked ground wires, harness connectors for corrosion and security
5. opened throttle body, pulled injectors, and was surprised to find them very clean, mild corrosion, but no ethanol related gunk, checked regulator, sprayed clean, not much there, cleaned pressure and return lines and re-connected
6. today I completed my inspection of the fuel system. pressure were 15 & 32 psi rock solid from idle to WOT under load, did notice that fuel pressure drops off immediately after key turned off during setup...don't quite recall if that is normal on this system - please chime in - even added a clear section of fuel line to check for air ingress prior to the filter, and no bubbles.
Now, correct me if I'm wrong, but with these fuel injected motors, there should be no hesitation or bogging. You can feel it in the boat, like it's not getting quite enough fuel. It's not that it runs bad. You can smoothly move the throttle forward and she accelerates fairly evenly, but if you drop the hammer, she sputters a bit and takes a couple seconds to come out of it.
Suggestions?
I'm hoping for a little direction. I have an '02 Chap 230ssi with a VP 5.0GXi-A hooked up to their DP-SM drive. Engine numbers - 4012050911; 3869116 and drive 4202037752; 3868913. This boat is new to me, June this year, and it is my first fuel injected boat. I noticed the hesitation when I water tested, but it had been sitting with old (6-12 month) fuel. 400 hours on motor, and other than fluid changes, not much maintenance done. I have done the following in an effort to bring the maintenance up to date, and get rid of the hesitation.
1. replaced cap & rotor - were moderately corroded, but no help
2. plugs and wires - appeared original, plugs showed normal wear - were gapped anywhere from 48 - 58, set mine to 60
3. fuel cell, disassemble, clean all screens, water ports, new filter - old filter had no water at all surprisingly
4. though batteries and connections looked pretty nice, cleaned reattached securely, and checked ground wires, harness connectors for corrosion and security
5. opened throttle body, pulled injectors, and was surprised to find them very clean, mild corrosion, but no ethanol related gunk, checked regulator, sprayed clean, not much there, cleaned pressure and return lines and re-connected
6. today I completed my inspection of the fuel system. pressure were 15 & 32 psi rock solid from idle to WOT under load, did notice that fuel pressure drops off immediately after key turned off during setup...don't quite recall if that is normal on this system - please chime in - even added a clear section of fuel line to check for air ingress prior to the filter, and no bubbles.
Now, correct me if I'm wrong, but with these fuel injected motors, there should be no hesitation or bogging. You can feel it in the boat, like it's not getting quite enough fuel. It's not that it runs bad. You can smoothly move the throttle forward and she accelerates fairly evenly, but if you drop the hammer, she sputters a bit and takes a couple seconds to come out of it.
Suggestions?
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