bayratt
Member
- Messages
- 7
- Reaction score
- 1
- Points
- 20
- Boat Make
- Yamaha
- Year
- 2005
- Boat Model
- SX
- Boat Length
- 23
Picked up a project 2004 sx230 late last year and had a mechanic swap in a donor waverunner engine (2002 fx140). Finally made it out and the donor engine generally lagged in rpms with throttle position, and topped out initially around 7800. Backing off a bit it would eventually get to 8200, not erratic, but after doing some research was worried it was the ecm issue (gas smell in oil and level was a bit over the full line). I pulled plugs and found cr8eb's, cylinders 1 and 2 looked ok, 3 a little fouled and 4 a bit more fouled. Cr9eb are the right plugs (put new ones in today), could this have done damage to the engine? Anything else I should be checking out?
I also swapped the ecms between the two engines and both seem to run on hose fine (they ran fine on hose before also, I'm hoping this points towards ecm being ok). The box looked brand new inside including the ecms, so it doesn't look like any water damage there.
On the yds hookup I tested the coils and fuel injectors, all clicked and got good spark on all cylinders from coils.
Hoping to get out on the water tomorrow to test.
I also swapped the ecms between the two engines and both seem to run on hose fine (they ran fine on hose before also, I'm hoping this points towards ecm being ok). The box looked brand new inside including the ecms, so it doesn't look like any water damage there.
On the yds hookup I tested the coils and fuel injectors, all clicked and got good spark on all cylinders from coils.
Hoping to get out on the water tomorrow to test.