What is this symbol
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Category: General Forums
Forum Name: The Boat Shed
Forum Description: Discuss all things boating.
URL: https://www.fishing.net.nz/forum/forum_posts.asp?TID=129061
Printed Date: 18 Apr 2024 at 1:16pm
Topic: What is this symbol
Posted By: Big -Dave
Subject: What is this symbol
Date Posted: 20 Sep 2018 at 4:48pm
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Garmin gps, honda outboard..the right hand one with the b in it ------------- you can't fix an idiot with duct tape, but it does muffle them for a while... |
Replies:
Posted By: Big -Dave
Date Posted: 20 Sep 2018 at 4:51pm
 ------------- you can't fix an idiot with duct tape, but it does muffle them for a while... |
Posted By: MATTOO
Date Posted: 20 Sep 2018 at 6:06pm
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Speak to the dealer. ------------- Just cruising in my now sweetas pimped out Southern 755 HT0! |
Posted By: puff
Date Posted: 20 Sep 2018 at 6:46pm
| Isn’t kpa pressure of some sort |
Posted By: PE Pete
Date Posted: 20 Sep 2018 at 6:59pm
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Would have thought the B represents Bar but then you would expect a secondary scale around the dial. ------------- Tight lines PE Pete |
Posted By: Big -Dave
Date Posted: 20 Sep 2018 at 7:06pm
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It is pressure. Pretty sure it isnt fuel or oil.. ------------- you can't fix an idiot with duct tape, but it does muffle them for a while... |
Posted By: MATTOO
Date Posted: 20 Sep 2018 at 8:13pm
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Big dave is closest so far, KPA is pressure. It could be a myriad of possibilities. But likely the oil. It's the only important thing to quantify. As I said ring the manufacturer or supplier or agent. Five seconds on the ph will eliminate the need for this post, and endless speculation. ------------- Just cruising in my now sweetas pimped out Southern 755 HT0! |
Posted By: Motorhead
Date Posted: 20 Sep 2018 at 9:36pm
It probably would represent bar as 200kPA is 2 bar. So the gauge in this instance is approximately 25kPA or .25 bar. |
PE Pete wrote:Posted By: Don18025
Date Posted: 21 Sep 2018 at 7:47am
Looks like a Garmin GPS pointing to where the Bar is - both front and back doors!!!
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Posted By: CoastalStan
Date Posted: 22 Sep 2018 at 6:13am
| I’m guessing but it is probably Boost pressure |
Posted By: edge01
Date Posted: 22 Sep 2018 at 2:50pm
| oil pressure. |
Posted By: Motorhead
Date Posted: 22 Sep 2018 at 9:55pm
| If your oil pressure is that low you likely have a problem. |
Posted By: Steps
Date Posted: 23 Sep 2018 at 10:22am
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No answer as to what yet? Thats approx 30/35 kpa about 4/5lbs.. seems rather low even at idle on a warm engine.. (?) I dont know honda engine specs thu.. Gauge range 0 to 400 kpa about 0 to 60lbs A gauge is usually calibrated to work in the center / vertical position 200 kpa... 30lbs So could be oil pressure.. thu cold engine may go damn close to the top limits... mid way 30lbs.. And I would think the engine would have a on/ off idiot light type sensor rather than a pressure range sensor (???).. and on/ off sensors dont measure pressure range.. Do Hondas have an idiot light sensor and/ or a pressure read out sensor? Not fuel pressure on an injected engine.. that would be up over 40lbs min at least (?) Im going for engine oil pressure gauge... thu the reading example does, as suggested in previous post. seems rather low.. |
Posted By: Grasshoppa
Date Posted: 23 Sep 2018 at 1:30pm
| it is boost pressure |
Posted By: Big -Dave
Date Posted: 23 Sep 2018 at 10:40pm
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It shows pressure when the engine is not running, Fuel pressure is all it could be, it does read slightly higher before the engine is started. I guess no ine else has actually seen this, seems the honda agent here has no idea either. Oh well, the engine runs fine regardless. ------------- you can't fix an idiot with duct tape, but it does muffle them for a while... |
Posted By: Big -Dave
Date Posted: 23 Sep 2018 at 10:48pm
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Steps, these engines are riddled with sensors. Apparentky there are 4 coolant temp sensors, and the one shown in the middle of the picture, is engine block temp, so it probably gives an approximate oil temp reading. The nmea data does not give access to half of the sensors on the motor. But it does respond to alarms, water in fuel, over temp, etc..and these alarms show on the chart plotter. I recentky had an issue where one thermostat was opening late, and the computer alarmed because the temp was different in each bank of cylinders. 2 new thermostats, and no more issues. ------------- you can't fix an idiot with duct tape, but it does muffle them for a while... |
Posted By: Grasshoppa
Date Posted: 24 Sep 2018 at 7:09am
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Arrows pointing into circle indicate something being forced in
B stands for boost The respective NMEA code charts for both Honda and Garmin offer Boost values The Honda chart does not offer codes for fuel pressure Fuel would have F as the symbol http://cdn.powerequipment.honda.com/marine/pdf/misc/nmea2000_pgn_list.pdf" rel="nofollow - http://cdn.powerequipment.honda.com/marine/pdf/misc/nmea2000_pgn_list.pdf https://static.garmin.com/pumac/Tech_Ref_for_Garmin_NMEA2k_EN.pdf" rel="nofollow - https://static.garmin.com/pumac/Tech_Ref_for_Garmin_NMEA2k_EN.pdf Im not so familar with Honda Outboards but maybe there is is a compressor to build slight initial boost pressure to avoid lag/improve throttle response That or there's simply a calibration issue |
Posted By: Steps
Date Posted: 24 Sep 2018 at 9:25am
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I guess no ine else has actually seen this, seems the honda agent here has no idea either. Now that I see as a huge problem.. 10 out of 10 for saying so.. But did they say they WILL find out? Either or both, dusting off the the Factory Install Service Repair Manual, removing the plastic sealed cover, and contacting Honda...and Garmin? Going on from the date of the 1st post to now, they should have contacted you with the correct answer..Right? Or are my expectations of professional TYPE services in NZ too high?
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Posted By: Durban
Date Posted: 24 Sep 2018 at 10:53am
| You have either 175/200/225 hp the injector pump fuel pressure should be 41 to 48 psi ( 280-330 kpa ) @ 600-700rpm |
Posted By: REIVER
Date Posted: 24 Sep 2018 at 4:31pm
| Water pressure ? To show if the impellor is pumping enough water. Pretty sure my Optimax shows this. |
Posted By: MATTOO
Date Posted: 24 Sep 2018 at 6:35pm
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Really, You haven't contacted the manufacturer. This is not Facebook you muppet. ------------- Just cruising in my now sweetas pimped out Southern 755 HT0! |
Posted By: JB
Date Posted: 24 Sep 2018 at 6:43pm
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Hi, One option to explore is to go into your Garmin set up under the intrustments and see what boxes are selected or ticked. I’ve a simrad set up and you can customise the layout. I’m picking you should be able to go into the set up menu and see what inputs are selected. That will tell you what you are after I’m picking |
Posted By: OuttaHere
Date Posted: 24 Sep 2018 at 9:28pm
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Is the engine running in that pic? Gonna assume it is from the voltage and temperature.... I think it's a boost/intake manifold pressure gauge. Since your motor is naturally aspirated, it will always read less than atmospheric (~101kpa). If you give the motor some beans I would expect the vacuum to increase, moving the gauge further to the left.
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Posted By: Durban
Date Posted: 24 Sep 2018 at 9:57pm
| He does mention that the pressure does changes when he starts it if its connected to the fuel injector pump there will be a slight change in pressure at start up the vacuum operates the fuel regulator, if its connected to the oil pump it will also hold pressure as the motor does have a check valve in . Honda uses a oil pressure switch which is connected in a normally closed circuit to keep the oil indicator pressure light on to tell you the the system is pressurized if the light goes off its telling you there is a fault with the oil pressure in the motor |