4 Winns of Change
Recruit
- Joined
- Sep 27, 2013
- Messages
- 3
Long story so I'll try to keep this brief and to the point so hopefully someone can shoot me in the right direction.
Boat = 2004 Four Winns 230 Horizon BR
424 Hours
DP-SM
5.7 GXI-F
Was a saltwater boat "desalting" it.
I bought this boat very cheap with some mechanical problems. I fixed all of them except oil kept getting water in it (slowly). Determined it was head gasket since water was in the cylinders 4 and 6. Ended up being small hole in NEW riser that drained in the cylinder and got in the oil. Boat ran well since at WOT and cruising it blew the water right out the exhaust from the small hole. Fixed that problem with new riser, head gaskets, cleaned fuel engine, sensors, painted etc. Looks great.
Got it back together ran great for about 30 minutes on hose. And you all know this story.... Under load on the water it has no power at 2500-3000 rpm, it pops, backfires, surges etc.
I read a lot of forums...it must be the fuel pump and paint particles. Pump is only 3 months old. Took pump apart, 0 paint particles. Took Fuel pressure regulator off and cleaned...some paint particles, took injectors off and cleaned screens...some paint particles. I put it together and ran a bit better but still surging. Fuel pump didn't seem to cavitate like it did before.
I suspect fuel pressure so I ordered a Fuel pressure tester and am waiting for it
Other thoughts or things I may try...
Anti siphon valve not allowing low pressure pump to work correctly...
Fuel tank 3/4 full and the supply hose was disconnected for about 14 days....Could it be as simple as bad fuel? I will be draining It and replacing with fresh.
Brass fitting on inlet of fuel cell... could it be drawing in air with it? I will be removing and putting some Teflon tape to find out.
Could I have messed up the valve adjustment or distributer alignment when engine was apart? Maybe...I went by the book, set to TDC #1 cylinder was up, adjusted all the intake and exhaust valves as listed in manual, rotated engine 360 degrees and adjusted the other valves as stated in the manual. rotated engine a few more times and put the distributor in when engine was TDC on the #1 cylinder and confirmed the rotor was pointing to #1 on the cap. I'm paranoid I made an error on this but I was extremely careful when doing this procedure. I'll double check if the above doesn't help.
I replaced one of the Knock Sensors, and the other is coming in a few days, it was badly corroded but it did work before the teardown.
I did pull one of the plug wires from the connector on the #7 plug but I recrimped it...could this be the issue. I have a new set of wires coming and will find out.
Desparately trying to get this boat done before I winterize it. Don't want to start with a problem in the spring.
Any help is appreciated. As you can see I've thought of several scenarios but will know more in a few days.
I'll update as I troubleshoot.
Boat = 2004 Four Winns 230 Horizon BR
424 Hours
DP-SM
5.7 GXI-F
Was a saltwater boat "desalting" it.
I bought this boat very cheap with some mechanical problems. I fixed all of them except oil kept getting water in it (slowly). Determined it was head gasket since water was in the cylinders 4 and 6. Ended up being small hole in NEW riser that drained in the cylinder and got in the oil. Boat ran well since at WOT and cruising it blew the water right out the exhaust from the small hole. Fixed that problem with new riser, head gaskets, cleaned fuel engine, sensors, painted etc. Looks great.
Got it back together ran great for about 30 minutes on hose. And you all know this story.... Under load on the water it has no power at 2500-3000 rpm, it pops, backfires, surges etc.
I read a lot of forums...it must be the fuel pump and paint particles. Pump is only 3 months old. Took pump apart, 0 paint particles. Took Fuel pressure regulator off and cleaned...some paint particles, took injectors off and cleaned screens...some paint particles. I put it together and ran a bit better but still surging. Fuel pump didn't seem to cavitate like it did before.
I suspect fuel pressure so I ordered a Fuel pressure tester and am waiting for it
Other thoughts or things I may try...
Anti siphon valve not allowing low pressure pump to work correctly...
Fuel tank 3/4 full and the supply hose was disconnected for about 14 days....Could it be as simple as bad fuel? I will be draining It and replacing with fresh.
Brass fitting on inlet of fuel cell... could it be drawing in air with it? I will be removing and putting some Teflon tape to find out.
Could I have messed up the valve adjustment or distributer alignment when engine was apart? Maybe...I went by the book, set to TDC #1 cylinder was up, adjusted all the intake and exhaust valves as listed in manual, rotated engine 360 degrees and adjusted the other valves as stated in the manual. rotated engine a few more times and put the distributor in when engine was TDC on the #1 cylinder and confirmed the rotor was pointing to #1 on the cap. I'm paranoid I made an error on this but I was extremely careful when doing this procedure. I'll double check if the above doesn't help.
I replaced one of the Knock Sensors, and the other is coming in a few days, it was badly corroded but it did work before the teardown.
I did pull one of the plug wires from the connector on the #7 plug but I recrimped it...could this be the issue. I have a new set of wires coming and will find out.
Desparately trying to get this boat done before I winterize it. Don't want to start with a problem in the spring.
Any help is appreciated. As you can see I've thought of several scenarios but will know more in a few days.
I'll update as I troubleshoot.