cmckenn
Member
- Messages
- 3
- Reaction score
- 3
- Points
- 12
- Boat Make
- Scarab
- Year
- 2017
- Boat Model
- HO Impulse
- Boat Length
- 25
I have read every post I could find and trying everything recommended before posting here. Purchased a 2017 Scarab 255 a month ago. First day out, both engines fired right up. Check engine light on P301 (didn't realize at this time I could scroll and see multiple codes). Full throttle and felt a slight misfire but completely went away after a few seconds and ran perfect all day long afterwards (check engine light stayed on). Second trip out, backed boat into water and port side engine would not start after numerous attempts. It would turn over but would not crank. Starboard engine fired up no problem every time. Read recommendation on here when I got home and saw a post about the relay. I swapped both relays from the starboard fuse box to the port fuse box and still same issue on port, no issue on starboard. I read another post about the kill safety switch. I pulled the cord attempted to fire both engines and got a loud beep and wrench (I believe this happen when trying to fire both engines, but unsure for reasons later). Pushed the button in with finger and immediately port engine fired up. Tried it several more times with zero issues. Fast forward 2 days.... carried the boat back out. Backed it into water, starboard fires right up. Port giving me problems. After many attempts it finally fires up but is running horrible. No power, will not go over 2k rpms, feels like cylinders misfiring. Check engine light still on from first outing, but i discovered I can scroll through multiple codes and discovered multiple cylinder misfiring and P0340. Camshaft Position Sensor. This made sense from my experience in automotives as to why the cylinders were misfiring. Fast forward 2 days and a rushed part to get boat fixed for trip this weekend. Purchased Noco Genius on board battery charger to make sure batteries were fully charged and good, rush delivered Camshaft position sensor and installed this evening thinking all would be great for the upcoming trip. Batteries fully charged, all connections checked, new sensor installed... Port engine will turn but refuses to crank. Starboard, fires right up. Here is what I have done since then with no resolve.....
- Rechecked all fuses and swapped relays
- Removed safety kill switch and attempted to start (starboard engine crank attempt causes loud beep and wrench, port clicks, but no beep or wrench. Not sure now if it beeped on the first day or attempt as mentioned above).
- Pressed safety kill button with finger as first time but still just turns no crank, starboard perfect.
- Switched wiring harness from starboard to port on fuel pumps and neither engine would fire off. (not sure if wiring and firing from electrical affected this)
- Removed fuel hose from injectors on port side (bad side), switched key on and fuel immediately began flowing into bucket.
- Broke fuel line quick connect in this process so unable to perform any other test until finding part tomorrow.
I am at a loss and have a family boating trip planned this weekend that is not looking hopeful. My thought process at this point is: Camshaft sensor replaced and good, batteries good and charged, fuel coming from tank up to fuel rail, all fuses good, relays good. I have not replaced or tested the spark plugs or coils and will tomorrow (assuming I find fuel line connect), but I can't see how bad spark plugs or a bad coil would cause a "no start" but fully understand a rough idle/run. I am at a loss and maybe I'm being optimistic or hopeful for the weekend trip, but this has to be something simple. My plan tomorrow assuming I find connection for fuel line is to purchase new plugs and pull spark plugs with coils to check spark is getting to each. Any help will be Greatly Appreciated... Not only by me but the kids looking forward to a weekend on the water.
- Rechecked all fuses and swapped relays
- Removed safety kill switch and attempted to start (starboard engine crank attempt causes loud beep and wrench, port clicks, but no beep or wrench. Not sure now if it beeped on the first day or attempt as mentioned above).
- Pressed safety kill button with finger as first time but still just turns no crank, starboard perfect.
- Switched wiring harness from starboard to port on fuel pumps and neither engine would fire off. (not sure if wiring and firing from electrical affected this)
- Removed fuel hose from injectors on port side (bad side), switched key on and fuel immediately began flowing into bucket.
- Broke fuel line quick connect in this process so unable to perform any other test until finding part tomorrow.
I am at a loss and have a family boating trip planned this weekend that is not looking hopeful. My thought process at this point is: Camshaft sensor replaced and good, batteries good and charged, fuel coming from tank up to fuel rail, all fuses good, relays good. I have not replaced or tested the spark plugs or coils and will tomorrow (assuming I find fuel line connect), but I can't see how bad spark plugs or a bad coil would cause a "no start" but fully understand a rough idle/run. I am at a loss and maybe I'm being optimistic or hopeful for the weekend trip, but this has to be something simple. My plan tomorrow assuming I find connection for fuel line is to purchase new plugs and pull spark plugs with coils to check spark is getting to each. Any help will be Greatly Appreciated... Not only by me but the kids looking forward to a weekend on the water.
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