2215 IMV Press Low Error

jff

jff

Member
Mar 29, 2008
510
Atlanta
Boat Info
2017 Crest Pontoon
Engines
Yamaha
I've been having a problem when the engines are totally warmed up and I come up on plane ... after a short time the RPMs on the Port engine start dropping off, it literally drops down about 200-300 RPMS. Then after 3-4 more seconds I get a "2215 IMV Press Low" error on Port. I looked up 2215 and found (assuming I am not mistaken):

2215 Fuel Pump Delivery Pressure — Data Valid but Below Normal Operational Range — Moderately Severe Level

some further reading, again my data may be incorrect, seemed to indicate that this error could be caused by a problem on the high pressure pump, a fuel sensor on the fuel rail, or an internal fuel link into the fuel system line.

Note: The Racors were replaced just a few weeks ago, the fuel isn't old in the boat (and it's treated) and there is no obvious fuel leak I can see in the bilge. I ran the boat after replacing the Racors with no problem but today (2nd or 3rd time out after doing the Racors) I had the problem resurface.

I'm wondering if:

a) all my thoughts so far seem correct
b) any simple ways I can further diagnose/troubleshoot (or does it need to go to the mechanic at this point)?
c) anything else it could be that I'm not thinking of?

any and all advice appreciated.

Sincerely,
Capt. Jason
 
Forgot to mention, and maybe this is wishful thinking ... the spin-on fuel filter is due for replacement (getting done in a service this coming week) - could it be as simple as that?

Regards,
Capt. Jason
 
Any updates on this as I am having the identical issue. Had the high pressure pump changed and no luck. I think my mechanic is stumped.
 
It seems that the last thing we did finally fixed it, the Racors were taken out and completely apart - there was quite a bit of sludge/muck in there. Apparenly that sludge was preventing enough fuel flow at higher speeds, once they were completely cleaned out, put back together and put back in the problem went away completely. Good luck!

Regards,
Jason
 
Thanks Jason.....I'll point my mechanic in that direction. Not sure how I'll feel it it's Racor maintenance and not the $1700 fuel pump I had them replace!
 
Keep us posted ... curious if that will end up being your culprit as well.
 
Will do......I am surprised you didn't experience WIF (water in fuel) alarms due to your Racor sludge. I used to fight them with even the smallest amount of sludge in the bowls. I'm not getting those alarms anymore since I had the tanks cleaned and fuel polished.

BTW....to clarify my symptom (which I think is the same as you had) when I throttle up past about 2700 rpm my port engine rpm drops down to about 2400 rpm afd I get the "2215 IMV low pressure" alarm. It clears itself quickly once I throttle back. This is the identical issue I had on my starboard engine before replacing the high pressure fuel pump which corrected that but didn't fix the port side when I had it's pump changed.

Mike
 
I have never seen a WIF alarm but the symptom you describe below is *exactly* what I did see. We never did replace the high pressure fuel pump, although the fear I had was that it would come to that. For what it's worth, I was not expecting the amount of sludge either, it really wasn't that evident in the bowls but apparently there was quite a bit of buildup in the Racor 'pipes' (not sure what you call those other parts of the system).

Regards,
Capt. Jason
 
In case it's useful, here are a couple of the disassembled pics. FUELCATCH003.jpg FUELCATCH007.jpg
 
Wow......that's very interesting. We'll certainly look at the condition of our fuel lines at the Racors. On one hand I hope the problem is that easilt corrected but on the other hand I'll be very disappointed if my fuel care process that has corrected my WIF problems allows that kind of sludge to occur.

At the end of the day I suspect we both had engines that were "starving" for fuel even if the causes turn out to be different.

FYI....I learned that these pumps generate nearly 20,000 PSI of fuel pressure and if the sensors "see" more than about 2,000 PSI under that the fault you and I have had occurs. I think the space shuttle had better tolarances and less "safeties!"

I'll keep you posted on my progress.
 
Please do. And I would be curious to hear more about your "fuel care process". Feel free to PM me. I had Cummins themselves trying to figure out my problem originally, never could get it - finally a local mechanic got it. And I agree, ultimately this comes down to a starving situation - not enough fuel getting to the engine. I'm guessing there are probably 10 reasons why that could be the case, so no promises that what fixed my problem will fix yours. Good luck!

Regards,
Capt. Jason
 
The odessy continues.....but I think we took two steps forward and one step back. Changed the "sensing valve" that controls how much fuel returns to the tank and that fixed my RPM's so I get full speed now. Unfortunately the mechanic left a fitting loose so a couple gallons of fuel in the bilge later....... :-( That may be why I still get the 2215 fault code.
 
Now my adventure continues - same problem again. And it's intermittent. Four runs ago the port engine would not go above 1900 RPM (the starboard kept throttling up normally) and then I get a 2215 IMV Pressure Low on the Port. So we cruised slow to our destination, then on the way home and on three subsequent runs it ran perfectly, all the way up to WOT. My spin-on fuel filters have 75 hours on them and my Racors maybe five. Seems though that if one of them were shot it wouldn't be intermittent like it is. Sigh.
 
I'm sorry to hear about the trouble. I'm interested in the racor maintenance, mine are similar but not quite as dirty. Was it a big job/difficult?
 
Replacing the Racors is pretty straight forward. I actually installed FuelFixers.com guages on mine as well, although I haven't yet gotten to the point where I fully depend on those (which kind of defeats the purpose of them). Anyway, are you asking about details of the replacement procedure? It's not complicated but quite a few little steps to do - takes only 30-45 minutes to do all four of mine. The spin-on Fleetguard 2-micron filter is also pretty easy, just need the right filter wrench and some muscle.

Regards,
Capt. Jason
 
Russ,

Ah, gotcha - I didn't do that job myself, I had my local dealer take care of it.

Regards,
Capt. Jason
 
No 2215 today but the problem get much worse. I put in new Racors and also new engine 2-micron fuel filters just to make sure we could rule those out. Then did a sea trial.

- On the way out, both engines seemed to power up normally until we hit 2000rpm, at that point the starboard continued to power up but the port just stopped at 2000rpm. Even if I gave it more throttle it just stayed at 2000rpm. I looked through the Smartcraft guages and noticed that at 2000rpm, port "Boost Press" (turbo boost pressure) was 15.3 psi and starboard was 24psi. If we added throttle above 2000 rpms the boost pressure on starboard goes up but port stayed at 2000rpm and 15.3psi. We also noticed what seemed like a small amount of black smoke
coming out of the port side. The other smartcraft setting that looked like a problem was that at 1900 rpms the load on the port was 76%, the load on Starboard was 58%.

- On the way back to my marina two hours later things were much worse. Port would not throttle up past 1,000 rpms at all and we noticed black smoke coming out of the exhaust (but the engine room didn't seem to have any, we looked). Engine temps fine. But, Boost Pressure on Port was 0psi and stayed at 0psi no matter how much throttle we tried to give it (1000rpms was the max it
would go to no matter what we did with the throttle). Load on Port was around 75% at 1,000 RPMS. Not good. Between the load, the smoke, the smell, etc. I figured I bet shut down Port - so I shut down the Port entirely and we came back on one engine.

Thoughts on each of the possible things it could be (and we need to check, in what order ideally, from most likely to least likely)?

Thanks for any thoughts.

Sincerely,
Capt. Jason
 
Quick update - we checked the boost sensor, the aftercooler, the air filters (not likely but just in case) - turns out the turbo itself is shot. Which would, of course, explain the 0PSI Boost reading. Fortunately the impeller in there was still okay so engine is good to go, just need an expensive replacement turbo. :(
 
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