I have 2011 F50 TLR that's been idling rough ever since I took it out from winter storage back in April. The engine visibly shakes back and forth, and it's a consistent, rhythmic shake (it's not random). I only notice the shake from idle up to about 1/4 throttle. But it accelerates and planes quickly, and it revs to just about 6k rpms at WOT with a full boat load. It feels fine performance-wise.
Side Note: If you check my post history, you'll see that I did have a performance issue last year. But this was due to a dinged up prop, so I think it's totally unrelated to my current issue.
The only other issue I've observed (other than the rough idling) is that the engine always stalls out on the first startup attempt on a cold morning. It always cranks, and will start spitting water out the tell-tale for a couple seconds before it putters and stalls out. But on the very next startup attempt (only a few seconds later), it starts and stays running, and I won't have that problem again until the next cold morning. This issue definitely seems to be correlated with temperature, because it doesn't happen on warm mornings (i.e. when the air temp is in the upper 60's or higher). I can also confirm that this issue happened all last season.. I just thought it was normal, so I didn't think much of it. So only the rough idle issue is new this season.
It's been suggested by others that my throttle linkage and timing need to be corrected. This recommendation was based on my YDS report, which is shown below. Obviously the code 29 is a concern, but I've seen lots of people say that a code 29 can be very misleading. So I wanted to get your thoughts.
Thanks in advance for any advice.
YDS report after the engine had warmed up for 10 minutes:
===============================
Save date,June 11 2017,
ECM No.:,6C18591A32,
Diagnosis,
,Code,Item,Result,Condition,
,13,Pulser coil,Normal,,
,15,Water temp sensor,Normal,,
,17,Knock sensor,Normal,,
,18,Throttle position sensor,Normal,,
,19,Battery voltage,Normal,,
,23,Intake temp sensor,Normal,,
,28,Shift position switch,Normal,,
,29,Intake press sensor,Normal,,
,37,Intake air passage,Normal,,
,44,Engine stop lanyard switch,Off,,
,49,Over cooling,Normal,,
Diagnosis Record,
,Total hours of operation,251,
,Code,Item,Occurred,
,29,Intake press sensor,245.4,
Engine Monitor,
,Monitor Item,Result,Unit,
,Engine speed,738,r/min,
,Intake pressure,36.58,kPa,
,Intake pressure,10.91,inHg,
,Atmospheric pressure,990.9,hPa,
,Atmospheric pressure,29.3,inHg,
,Ignition timing,ATDC 9,deg,
,Battery voltage (12-16),14.90,V,
,TPS voltage (0.5-4.5),0.982,V,
,Throttle valve opening (0-90),7.1,deg,
,ISC valve opening,31,%,
,Fuel injection duration,1.81,ms,
,Water temperature (below 90),62.5,°C,
,Water temperature (below 194),144.5,°F,
,Intake temperature (below 70),33.3,°C,
,Intake temperature (below 158),91.9,°F,
,Engine stop lanyard switch,OFF,,
,Shift position switch,ON,,
,Oil press switch,OFF,,
,Dual engine system switch,OFF,,
Data Logger[Engine operating hours according to engine speed],
,Engine speed,Time[h],
,- 1000 r/min,132.7,
,1000 - 2000 r/min,64.7,
,2000 - 3000 r/min,15.8,
,3000 - 4000 r/min,12.1,
,4000 - 5000 r/min,13.0,
,5000 - 6000 r/min,13.3,
,6000 - 7000 r/min,0.0,
,Engine hours,251,
Data Logger[Data comparison graph],
,Engine speed[r/min],Battery voltage (12-16)[V],TPS voltage (0.5-4.5)[V],Water temperature (below 90)[°C],Intake pressure[kPa],Oil press switch[0:OFF 1:ON]
,900,14.72,0.98,62.5,42.9,0,
,900,15.09,0.98,62.5,42.0,0,
,900,14.94,0.98,62.5,43.4,0,
,900,14.87,0.98,62.5,41.0,0,
,900,15.01,0.98,62.5,42.9,0,
,900,14.87,0.98,62.5,42.4,0,
,900,14.79,0.98,62.5,42.9,0,
,900,15.01,0.98,62.5,43.9,0,
,900,15.01,0.98,62.5,42.4,0,
,750,14.79,0.98,62.5,35.5,0,
,750,14.79,0.98,62.5,36.0,0,
,750,14.94,0.98,62.5,36.5,0,
,750,14.79,0.98,62.5,36.0,0,
===============================
Side Note: If you check my post history, you'll see that I did have a performance issue last year. But this was due to a dinged up prop, so I think it's totally unrelated to my current issue.
The only other issue I've observed (other than the rough idling) is that the engine always stalls out on the first startup attempt on a cold morning. It always cranks, and will start spitting water out the tell-tale for a couple seconds before it putters and stalls out. But on the very next startup attempt (only a few seconds later), it starts and stays running, and I won't have that problem again until the next cold morning. This issue definitely seems to be correlated with temperature, because it doesn't happen on warm mornings (i.e. when the air temp is in the upper 60's or higher). I can also confirm that this issue happened all last season.. I just thought it was normal, so I didn't think much of it. So only the rough idle issue is new this season.
It's been suggested by others that my throttle linkage and timing need to be corrected. This recommendation was based on my YDS report, which is shown below. Obviously the code 29 is a concern, but I've seen lots of people say that a code 29 can be very misleading. So I wanted to get your thoughts.
Thanks in advance for any advice.
YDS report after the engine had warmed up for 10 minutes:
===============================
Save date,June 11 2017,
ECM No.:,6C18591A32,
Diagnosis,
,Code,Item,Result,Condition,
,13,Pulser coil,Normal,,
,15,Water temp sensor,Normal,,
,17,Knock sensor,Normal,,
,18,Throttle position sensor,Normal,,
,19,Battery voltage,Normal,,
,23,Intake temp sensor,Normal,,
,28,Shift position switch,Normal,,
,29,Intake press sensor,Normal,,
,37,Intake air passage,Normal,,
,44,Engine stop lanyard switch,Off,,
,49,Over cooling,Normal,,
Diagnosis Record,
,Total hours of operation,251,
,Code,Item,Occurred,
,29,Intake press sensor,245.4,
Engine Monitor,
,Monitor Item,Result,Unit,
,Engine speed,738,r/min,
,Intake pressure,36.58,kPa,
,Intake pressure,10.91,inHg,
,Atmospheric pressure,990.9,hPa,
,Atmospheric pressure,29.3,inHg,
,Ignition timing,ATDC 9,deg,
,Battery voltage (12-16),14.90,V,
,TPS voltage (0.5-4.5),0.982,V,
,Throttle valve opening (0-90),7.1,deg,
,ISC valve opening,31,%,
,Fuel injection duration,1.81,ms,
,Water temperature (below 90),62.5,°C,
,Water temperature (below 194),144.5,°F,
,Intake temperature (below 70),33.3,°C,
,Intake temperature (below 158),91.9,°F,
,Engine stop lanyard switch,OFF,,
,Shift position switch,ON,,
,Oil press switch,OFF,,
,Dual engine system switch,OFF,,
Data Logger[Engine operating hours according to engine speed],
,Engine speed,Time[h],
,- 1000 r/min,132.7,
,1000 - 2000 r/min,64.7,
,2000 - 3000 r/min,15.8,
,3000 - 4000 r/min,12.1,
,4000 - 5000 r/min,13.0,
,5000 - 6000 r/min,13.3,
,6000 - 7000 r/min,0.0,
,Engine hours,251,
Data Logger[Data comparison graph],
,Engine speed[r/min],Battery voltage (12-16)[V],TPS voltage (0.5-4.5)[V],Water temperature (below 90)[°C],Intake pressure[kPa],Oil press switch[0:OFF 1:ON]
,900,14.72,0.98,62.5,42.9,0,
,900,15.09,0.98,62.5,42.0,0,
,900,14.94,0.98,62.5,43.4,0,
,900,14.87,0.98,62.5,41.0,0,
,900,15.01,0.98,62.5,42.9,0,
,900,14.87,0.98,62.5,42.4,0,
,900,14.79,0.98,62.5,42.9,0,
,900,15.01,0.98,62.5,43.9,0,
,900,15.01,0.98,62.5,42.4,0,
,750,14.79,0.98,62.5,35.5,0,
,750,14.79,0.98,62.5,36.0,0,
,750,14.94,0.98,62.5,36.5,0,
,750,14.79,0.98,62.5,36.0,0,
===============================