95 dt150 help please

[Solarman]

h-p filters

From the bottom of the vst, there should be a in-line cone shaped filter that goes to the high pressure fuel pump. The other end of the HP pump follow the fuel line, and it goes into the HP filter. Make sure both are cleaned.
When you turn the key on, do you get a short audible beep?

[dkshooter]

does anyone know what the reading should be for the TPS I got b-g/r 894 br/y-g/r a flash at 1367 and b-br/y a flash at 1507 is there any other way to check this?
thanks

[dkshooter]

Sorry for the lack of info on the boat. first it has been on this boat for 10 years and did run like a top. the boat is a ranger 360v bass boat. I have gone thru the 2 low pressure fuel pumps cleaned the vst pressure tested the high pressure pump operating pressure and holding pressure are both within specs I tested between the regulator and the fuel rail. I am not sure where the pump filter screens are located? the monitor when I turn on the key only flashes rev for about 5 sec. so I am not sure it is operating correctly. I will check the high pressure filter next. yes I do have a digital manual but it does not have my model year so I am kind of feeling my way thru.
thanks

[Solarman]

Dk, low pressure pump check.

well... I pulled the low pressure fuel pumps I found what I think you are referring to as the check valves is it more like a diaphragm? there is 1 on both sides of the middle piece of the pump a little smaller than a dime? What I did find was a nest a mud dauber or something in the lower low pressure fuel pump I have no idea how this got there!!!! the real problem is that the river is above flood stage and I cannot get the boat to the river guess I will have to wait I do not have much hope that this was the problem because my luck is not that good, thanks for the help

Dk, you sent this earlier in the thread.
Think I would go back through the low pressure pumps, all the fuel lines and the filters. If you have to, use air pressure to blow through the lines. Then if all that is clear, would run a pressure test at your fuel rail after the pressure regulator.
Then let us know what you've found.
Good luck.

[Solarman]

peter / Dk, dt150 efi running issues.

Peter, we haven't heard anything from you? What's up with your motor?
Dk, am not sure how much of your system you have checked. Again, your problem sounds fuel related. Have you gone through your 2 low pressure pumps, and have you gone through your high pressure pump filter screens? Is your monitor gauge working? Is it flashing any codes? Do you have a service manual yet?

[Solarman]

tilting motor runs better

Dk i'm not sure what you're running your motor on. If you're boat is bow heavy and you tilt the motor up, it will lift the bow out of the water more. This is not bad. It will help to plane the boat off, allowing your motor to work less hard, but don't tilt too high. that might tell me your prop, or depth of motor is not right.

[aquamort]

DK have you had other motors on this boat that have gone ok? Did this motor used to go ok on this boat? The battery wont be the problem mate.

As mentioned the cav plate should be level with bottom of hull. Google it and you will find some diagrams. The leg too deep will just make it work hard and you wont get full potential.

[dkshooter]

solarman it seems that when there is less load on the prop it will run the rpms up so when I tilt the motor up there is less water to push against

[Solarman]

is the vst the same as the 200, or 225¿

I would say it is similar, and operates the same, but would have to check the part numbers on all the parts to see if same. If your motor runs better if tilting, then seems like something is changing because of tilt. Your motor should be positioned so the cavitation plate is the same level as the bottom edge of the boat. Small adjustments can be made while running for better performance. Tilting the motor should be possible as many of us tilt our motors in shallow water.

[dkshooter]

could this be a battery problem? The battery is not new but it seems to hold a charge and it spins the motor easily. Would the vst be the same on a 200 or 225?

[dkshooter]

aquamort what I mean by ramping up is it accelerates well past 2000 rpms till it pushes back on the tilt cylinders and I have an adjustable jack plate and it is all the way down so its well below the hull. the motor will accelerate past 2000 rpms in neutral. Solarman I guess I will tear down the VST again and I don't trust the monitor gauge but It does not show any lights.
thanks

[Solarman]

dt150 running issues

DK, it sounds like you may still have issues with your vst float system. It still acts like it's fuel related, unless there are codes flashing.

[aquamort]

Oh no Dk, What do you mean "ramp up" when you trim the motor up? Do you mean the engine will start to rev like its suppose to?

Out of curiosity where is your cavitation plate in relation to the bottom of your hull? It should be about the same depth, that is line up with the bottom of you hull. What size prop do you have your the engine? Maybe this is why the engine is bogging down and not a mechanical reason??

Im pretty sure you cant free rev those engines over 2rpm in neutral anyway so the only way to test is in the water or a good size tank.

[Moonlighter]

hi nd help iv got a 100 suzuki. iv got water coming out of the pilot water hole but theres no wter coming out of the water discharge hole when its warmed up. it says in the manual it should water should come out an it does not get hot at al. can anyone help?

Bubba, you might want to start a new thread rather than cutting in on someone else's.

[bubbaman6]

dt100 no water coming of the water discharge hole

hi nd help iv got a 100 suzuki. iv got water coming out of the pilot water hole but theres no wter coming out of the water discharge hole when its warmed up. it says in the manual it should water should come out an it does not get hot at al. can anyone help?