05-13-2020 07:52 AM
SROC experts, I posted this on CSR forums. Looking for help.
Need some help:
After splashing the boat and during my first short drive from storage location to marine slip I had a Smartcraft Message on SB engine.
- Smartcraft read: STBD System Fault with a a message that read “Fuel Sender”. The followed message once you hit “more” read - Fuel Level Sensor is not working properly”.
- Assuming it was just the fuel sender unit, I went out for a quick ride and had what I describe as RPM roll-back. While cruising at 3850 per/engine, my STBD engine slowly rolled back. Immediately shut it down, check the engine (s) and nothing noticeable. Everything looks good (oil, water, no leaks, etc). All engine indications in the digital and analog indicators were normal, other than now that fuel gauge reads zero.
- So come back and decide to go out another day to verify. This time while “trolling” at idle, my Port engine went from about 700 RPM to about 480 when I shut it off (luckily I was looking at the dials). Inspect engine(s) and nothing. Restart, got and to fuel dock. My intent was to fill up to 75%, however due to erroneous indications in fuel sender, ended up filling the SB tank. After this we headed back to marina and everything look and felt normal (headed back at 4200ish RPM with no issues), then cruised at idle to dock with no issues.
- Replaced fuel filters on both engines, and fuel filter for gender (this is the only I can see/find/per manual on my boat).
- I would expect this to happen on one engine, but the roll back on Port got me a bit concerned.
- I have researched this with potential issues on fuel sender units, etc... but haven’t found an answer.
- checked plugs and look good, but I’ll replace the anyways.
The boat has 380ish hours, Twin 350 (MIE 350 MAG MOI HORIZON) V-Drives.
Fuel Tanks made by Florida Marine Tanks (FMT-94S-SR, P/N 1818823, 94 gals on SB & FMT-107P-SR, P/N 1818822, 107 gals on Port)
In addition I will replace all spark plugs, wires, and anything needed.
Current plugs are NGK ITR4A15 (however on label side of engine it recommends AC 41-932). Which one anyone recommends?
Recently I discovered my Idle could be a bit high. After IAC replacement my Idle has been in the 700+ (sometime as high as 770-790). The same label on side of engine indicates that Idle RPM should be 600 Non Adj. Not sure what’s going on here. Disconnected throttle cables to verify it wasn’t the cables and still in the 700 RPM range.
I have babied this boat since I bought it slightly used with 179hrs. This is the first time I have had any issues.
Sorry for the long post, but if you have gone through something similar please chime-in. I maybe missing something simple.
Thanks in Advanced!
FIG
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