No Pressure After Oil Change

[muc]

Maybe I am not giving it enough time to pressure up. I thought about giving it some light revs says for about 15 seconds. If it does not pressure up than I would think there is clearly a problem. Guess i can try that tonight since im kind of at a stand still. I do not have the smartcraft gauges, it is the vesselview i was using. I think i might have said smartcraft earlier. So think that starting and reving a little will be okay since i cant get the gauge?

Yes, if it was me I would run it.
Pay attention to the vesselview. What exactly it says.
And also time the horn sounds. how long on how long off.

 

[andrewterri]

The alarm went off for about one second than turned off. It kind of surprised me as i thought a low oil pressure would be constant seeing how critical it is. I should go look that alarm up. I will go over to their website and check. I did not leave the boat running long enough to for it to go off a second time I just saw no pressure on the gauge after about 7 seconds. I will run it again, but so I have an idea for knowledge purposes about how long can you run an engine without oil pressure? I always thought around 10 seconds would damage it. I am talking an engine like mine that has had oil running through it recently.

 

[andrewterri]

I just got to thinking and believe the vessel view shows oil pressure. I am going to go connect it to the boat and look through the app. I think i remember seeing it when i bought it. I just got it for cheap diagnoses and fuel burn data when we bought the boat than forgot about it. Won't that be more accurate than the gauge since its reading from the computer (assuming the computer is not messed up, which its not in this case)?

 

[QBhoy]

I just got to thinking and believe the vessel view shows oil pressure. I am going to go connect it to the boat and look through the app. I think i remember seeing it when i bought it. I just got it for cheap diagnoses and fuel burn data when we bought the boat than forgot about it. Won't that be more accurate than the gauge since its reading from the computer (assuming the computer is not messed up, which its not in this case)?

The vessel view certainly shows oil pressure, but I have a feeling it might take its reading from the sensor.
that said, it will tell you very quickly if it’s the sensor or genuine bad oil pressure. If it reads 0 or a non sensical reading you can be pretty certain it’s your sensor sender unit.

 

[muc]

your owners manual will describe the 2 modes of warning horn. Caution and Severe

hook up the vesselview, yes it is more accurate

 

[andrewterri]

So if it reads low it might be the pump? I will do the test tomorrow since i have to hook it to the hose and report back. thank you guys again.

 

[andrewterri]

Got some good weather and pulled the boat out to run it for 15 seconds as suggested and now she will not run. The boat started than died. This happened about four times. When I turn the key you can hear the fuel pump pressure up and it sounds like it is sucking air which I did change the fuel water separator filter but ran ran fine for the short tests I did before. I really could not give it revs to see if the oil pressure comes up since everytime but once it died. The last time I rev'd it, it did not die but it struggled to run and I don't think it ever would have pressured up the oil struggling to run the way it was.

For the vesselview, when I turned the key on before starting it, the oil pressure showed .5 psi. I guess that is a base setting since it was getting power. When it started and idled for a split second before it started struggling for fuel the gauge stayed at .5 psi and never changed. I don't know what the hell happened to this boat.

If I put a manual gauge on it and disconnect the safety lanyard to make sure it wont start to protect the bearings if there is truly no pressure (which i still can't believe after running just fine) and turn the engine over I should see some pressure as the engine is cranking right?

 

[andrewterri]

Someone asked I watch what codes the vesselview throws, I got a low oil pressure, low water pressure (running on a hose), and engine guardian system engaged.

 

[alldodge]

If I put a manual gauge on it and disconnect the safety lanyard to make sure it wont start to protect the bearings if there is truly no pressure (which i still can't believe after running just fine) and turn the engine over I should see some pressure as the engine is cranking right?

You should, but may have a air lock which needs to pump fast enough to over come.

 

[harringtondav]

All of this current Guardian, Vessel View high tech stuff is over my head. But I believe your engine is getting plenty of oil. An oil change doesn't trash an oil pump. Some sensor is confused, causing the controller more confusion.

Maybe disconnect the battery+ to bleed off 'flea power' to the controller. Works most of the time for my confused computers.

Now this one may be risky, but worth a try. Also disconnect the B- cable from the battery. Crack your oil pressure sensors. Use jumper cables to to the big starter lugs to crank the engine until the sensors bleed clear oil and the filter bleeds clear.. Then reconnect all an try again.

I recall achris 's post about problems with this upside down oil filter after oil changes. Maybe he could shed some light.

 

[andrewterri]

This all seems crazy. Following the logical answers and thoughts would be the engine is not running smooth because there is air in the fuel line from changing the filter and the oil pressure is not there because the engine has not been able to run long enough at high enough rpm to get the pressure up. With that said I am not sure and don't really know what direction to go in next. I am very concerned about damaging this engine. achris, if your out there do you have any thoughts?

 

[achris]

.... achris, if you're out there do you have any thoughts?

Yes plenty, mostly about the fact that with everything shutting down, I have no work (no air travel means I can't get to work) and my wife's work at the gym is also finished for the foreseeable.... And now my insurance company is telling me that my 'salary continuation insurance' isn't really salary continuation.

Ohh, on the oil pressure problem... Yeah, haven't been following this thread at all. I'll do a quick read up and see what I see. But yes, with the remote oil filter mounting the filter 'thread side down' (really, what genius came up with that? :facepalm it does take a disturbingly long time for the pressure to come up after the filter change. I am now putting some oil (about a cup) in the filter and allowing it to soak into the element paper before inverting and screwing down really quickly. That seems to have helped me...

Anyway, areading I will go...

Chris......

 

[achris]

Ok, read through and 'up to speed'. I concur with muc. There are 2 oil pressure senders/sensors on the engine. One (the one with a single lt blue wire) is for the analogue gauge and the other (with 3 wires, grey, black/pink and dk blue/yellow) are the voltage divider type sensor for the ECU. And yes, the alarm is controlled by the ECU, based on what the voltage divider sensor is reporting.

If you changed both fuel and oil filters, then I agree, you have air in the lines, pretty much guaranteed. With the oil pressure I also agree with a few of the suggests here, just start it up with plenty of water on the hose and give it 1500rpm. With no load on the engine, it would probably run for quite a few minutes before damage. You COULD prime the line by removing the filter and filling the supply line with oil. That would help it out. The supply line for the filter (the one running back to the pump) is the outer one, not the centre..

As for the fuel filter. I have only seen that once, and after that, I FILL my new filter with new fuel before screwing it on. One option you have is to open a fuel fitting after the pump and allow the pump to purge the line, but be VERY CAREFUL doing that. Petrol you know, she goes bang really easily! The only suggestion I have for that would be to make sure your batteries are fully charged and in great condition and just keep trying to get it to run....

Chris.........

 

[andrewterri]

damn achris, I am sorry. I will be praying for you. My wife is no longer working now too because all of this. I have held on so far. With all your going through thank you for still taking the time to help us. I hope some day there is something i can do for you. all of you guys are helping us avoid an expensive dealer bill which would mean no lake time with the family. Our daughter has still's disease which is an autoimmune disorder. so with a weak immune system about the only place she can go is to the lake to ensure she is not around anyone. what im saying is, this is not just about fun lake time, she is told she cant be around other people right now so the lake is the only chance at a normal summer or life for her now. She is 4 and cant understand why the doctors told her she cant leave the house. While everyone is struggling in their own way, thank you for taking the time to help us ease her struggling and confusion.

 

[andrewterri]

I will charge the batteries and continue to try and get it running and fuel supplied. I can remove the filer and fill it with fuel to see if that helps. I will also remove the oil filter and add oil running to the line that goes to the pump. I will look back up the remote oil line diagram as i think the one closed to the bow is the one that runs to the pump. Or i guess i can just fill both lines. I will do this in the morning and report back what happened.

 

[Bt Doctur]

If you remove the oil filter and crank the engine you will know pretty fast if you are pumping oil
and it sometimes takes about 10-12 seconds to silence the alarms

 

[tank1949]

As soon as I can find a gauge i am going to test it. Hoping I can get the sender unit off with the amount of corrosion and rust around it. I am going to try to get it off tonight. Does the alarm go off the gauge reading or the pressure itself? I.e... if the gauge somehow went bad and is not showing pressure when there is will it still trip an alarm?

Take my advice, if you can, and relocate both oil sender and oil switch to near distributor. I learned the hard way. On a trip, one of my old Alphas' sprang a oil switch leak and dumped a lot of oil. Oil sender (not switch) should already be located just next to distributor. You'd be wise to add a "T" 1/8 NPT to install both there. I used schedule 80 ss for strength. I would have preferred schedule 80 black iron but I couldn't find it. Brass was too weak for weight and vibration. Retrofitting will require a bit of effort. In the future, they'd be easy to access and monitor. Where the switch is now (just above where spin on oil filter connects) is difficult to access and monitor and is prone to corrosion. Just my 2 cents.... Your boat is a lot newer than what I am use to, but most MCs have alarm switches and sending units. I Good luck!!!!!!!

 

[Scott Danforth]

pull sender, install mechanical pressure gauge, crank motor. you should see over 20 psi just from cranking

if you dont have oil pressure on mechanical gauge, you dont have oil pressure. time to dig deeper

 

[andrewterri]

Bt Doctur, I pulled the filter, removed the safety lanyard and cranked it over. I filled the lines before with oil and after cranking for about 2-3 seconds I got oil being pumped out from the outer line (line closest to bow). I cleaned it up and cranked it again and sweet sweet oil was coming out.

The filter was still mostly dry so it is just taking time to fill. I am going to leave the lanyard off and crank the engine in about 10 second intervals a couple times than wait 30 minutes so I dont overheat the starter.

As for the fuel problem. It will probably just be easier to start and let it idle so it can clear the lines as long as it will idle. I thought about removing the filter and filling it with fuel but that would just introduce more air.

 

[andrewterri]

For anyone reading this with a similar problem, When I put oil down the oil line than cranked the engine over 3 or 4 times for about 10 seconds without a lanyard installed it seemed to make a huge difference. When i went to started the engine the oil pressure came right up and has been holding great. I let the engine idle and it worked the air out of the fuel line. Only alarm i was getting was a lower water pressure. There was a slight kink in the hose and i just dont think this boat likes running off the hose. I only ran it for about 30 seconds on the hose. I went to take it to the lake since the wind died and its 80 outside only to find the lake flooded. oh well, going to take a little road trip tomorrow with the family to keystone lake by tulsa so the kids can get out of the house without being around others. Thank you guys for everything. I never would have been able to get this worked out without you.