Ficht Oil Injector

[coreythompson_85]

I have a 2000 150HP Ficht. I can feel the pulses in the hose between the oil pump and the oil injector. If their are pulses here then i should be able to assume the oil injector coil is pulsing as it should? The action of the lift pump does not account for the pulses correct, it just keeps the pressure up? In the 6 lines coming off the injector they are primed with no air bubbles but its hard to tell if i can feel pulses in them. Does this system sound like it is working correctly? Should I be able to clearly feel the pulses in the 6 injector lines as well?

 

[coreythompson_85]

Re: Ficht Oil Injector

"bump*

 

[jeffersondodson561]

Re: Ficht Oil Injector

You probably will not be able to feel it, you may be able to hear it with a mechanics stethescope. The Ficht oil injector is basically a fuel injector, pretty reliable as long as the oil lift pump keeps the appropriate pressure. What is causing you for concern?

 

[boobie]

Re: Ficht Oil Injector

Good question. Why are you concerned ? You do have a no oil warning on the mtr.

 

[coreythompson_85]

Re: Ficht Oil Injector

Cause i was getting no oil alarms but im quite sure is a result of my pressure switch and lift pump which are both leaking slightly. I am waiting on the parts. Also i cant really feel the pulse in the return line as much either and it feels softer than the one between pump and injector, but this should be normal right as oil is being utilized? Also why is oil infeed line 1/4 inch and return line 5/16?

 

[Haffiman]

Re: Ficht Oil Injector

The return line is bigger to avoid any back pressure and.
The only way to 'test' the oil injector system with engine running, is to monitor oil flow in the venturi nipples. It is no pressure in the lines between the injector manifold and the nipples. The plastic tubes from injector to nipples must be routed such as the nipples are the highest point.
Safest test method is to run a static test with the software.

 

[coreythompson_85]

Re: Ficht Oil Injector

Still waiting on the software but i think i see what your saying. Those lines arent pressurized so if the nipples arent the highest point the oil will just spill in, correct? How exactly will this injector test work? Appreciate all the help very much.

 

[Haffiman]

Re: Ficht Oil Injector

How exact depends on how you perform it.
It is simply a way of activating the solenoid without engine running.
Be sure you have pressure in the line, cycle the injector 10-20 times, the amount of oil coming out of each ventury nipple should be the same.
How to measure?
Be creative as it is only a question of droplets.

 

[aerobat]

Re: Ficht Oil Injector

work more symptomatic to check out what it is - and of course the diagnostic software is always a good idea.

at my engine it seemed to be an oil leak in the supply line , after fixing it until now the engine gave me no alarm-i did not changed any sensor, just fixed the line ! it seems the ficht is very sensitive to oil leaks.

did you put off the return line and checked for oil splashing out when engine runs ?

if oil is coming out you may replace a good oil pump and waste money !

first you must make all necessary to keep the whole oil system tight without any leaks, further spray all sensor connections with contact spray. remove the oil level sensor in the tank and check if it is stuck , check the filter in the tank if it is clean.

when the oil injector lines are with oil without any bubbles i would quess your oil pump runs !

 

[coreythompson_85]

Re: Ficht Oil Injector

Judging by your responses I would agree that the oil pump works. But will be changing it and the pressure sensor out anyways due to the small amount of oil leaking out of them, and will perform these other tests to be safe. Thanks for all the help guys greatly appreciated, feel a lot more confident about this motor now.

 

[jeffersondodson561]

Re: Ficht Oil Injector

Where are your leaks coming from?

 

[coreythompson_85]

Re: Ficht Oil Injector

I'm unable to see the part of the print with the pressure switch and lift pump, but the only places its leaking are from the actual oil pressure switch and the center of the oil lift pump.

 

[jeffersondodson561]

Re: Ficht Oil Injector

I would replace the switch, are all of the screws tight on the lift pump? Not sure if they make a rebuild kit for that or not but it is a pretty critical component. Since you are servicing all of this you might want to inspect the whole oil delivery system: oil intake screen, tank for water, condition of oil hose. If I know Murphy he wants to pay you a visit.

 

[aerobat]

Re: Ficht Oil Injector

you did not answer if oil is splashing out of the return line when engine runs..if yes you are going to replace a healthy pump probably. start with the cheap things. oil sensor, maybe just the seal of it. it learned on my ficht that this engine is very sensitive to any oil leaks and will throw you a no oil alarm quickly .

make all necessary to stop any oil from leaking

 

[coreythompson_85]

Re: Ficht Oil Injector

So today i finally got my service manual but am still waiting for my new lift pump and oil pressure switch. Decided to do a little playing around. Pulled off return line at tank and confirmed that yes i am getting healthy flow back to tank. Also, went and got a 0-30psi gauge and installed where oil pressure switch goes. All seems well system at a steady 8 psi. Will still be replacing lift pump when i get it due to the leak where it bolts together. Was curious, when you pinch the return line to purge the system after service where does all the air go, and isn't it hard on all the components being overpressured while you're pinching the line?

 

[Haffiman]

Re: Ficht Oil Injector

The air is forged through the injector and the delivery lines to the intakes. This should be done at idle, and not more than a few seconds are needed.

 

[coreythompson_85]

Re: Ficht Oil Injector

And as long as the delivery lines look primed and I have flow back to tank I can assume all air is out?

 

[Haffiman]

Re: Ficht Oil Injector

As long as no air in delivery line and you see oil dripping from the nipples in the intakes, should be OK. Oil in return line, only means that the oil pump is working, but not that the pressure in the system is correct. If the pressure valve in the return fails, you loose pressure but still have return.

 

[coreythompson_85]

Re: Ficht Oil Injector

Replaced the lift pump and pressure switch, purged the system. No more no oil alarm. Verified oil flow back to tank ok. Put pressure gauge on lift pump, all good 8psi. Used software to do static test of oil injector, all good. Thanks for all the help everyone its been a learning experience.

 

[aerobat]

Re: Ficht Oil Injector

nice to hear you sorted it out ! but keep your old pump since when you had a flow with 8 psi you replaced a good pump with just a bad seal.

i learned on my engine that it will throw a no oil alarm quick when even a minor leak occurs.