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Old 04-18-2005, 12:41 PM
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LakePirate LakePirate is offline
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What to do now?

So I go about doing the spring maintenance on my Ď02 Maristar 210
Change the oil, Mobil 1 full synthetic 5w40
Change the filter K&N (donít remember which on)
Change the plugs (ACDelco)
Charge the battery and away we go

Well it cranked right up, checked my oil pressure it was good and let it run/idle for about an hour as we went on a little cruise
Well when I got the passengers out I took it for a run
Got up to WOT and the pressure dropped to 0
Alarmed by this I stopped the boat and checked the oil level
It was fine and the oil was still clean
On the way back to the dock the pressure gauge bounced from
0 to 40 psi. Anybody got any thoughts on why this is happening?
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Old 04-18-2005, 01:00 PM
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prostar205 prostar205 is offline
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Check the oil pressure sending unit and the wires going to it.
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Old 04-18-2005, 01:01 PM
Hunterb Hunterb is offline
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In all likelihood it is related to either your oil pressure sending unit or the wiring between the unit and the guage somewhere. I would suspect the sending unit. I'm not sure what motor you have in there but the sending units are usually cheap and easy to change. Make sure all the connections are good before you buy a new one. I seriously doubt you ran the motor with no oil pressure so you probably don't need to worry about that.

Hope that helps.

Bruce
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Old 04-18-2005, 01:15 PM
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Ric Ric is offline
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check mymc to be sure your's isnt one of the motors that had a recall on the oil pump?

Quote:
Originally Posted by LakePirate
So I go about doing the spring maintenance on my Ď02 Maristar 210
Change the oil, Mobil 1 full synthetic 5w40
Change the filter K&N (donít remember which on)
Change the plugs (ACDelco)
Charge the battery and away we go

Well it cranked right up, checked my oil pressure it was good and let it run/idle for about an hour as we went on a little cruise
Well when I got the passengers out I took it for a run
Got up to WOT and the pressure dropped to 0
Alarmed by this I stopped the boat and checked the oil level
It was fine and the oil was still clean
On the way back to the dock the pressure gauge bounced from
0 to 40 psi. Anybody got any thoughts on why this is happening?
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Old 04-18-2005, 01:18 PM
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rem_pss308 rem_pss308 is offline
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Here is some helpful info from Teleflex. I had problems with mine, it turned out to be the gauge.

One the gauge unhook the wire from the "S" terminal, and turn the ignition switch on, the gauge should read 0 lbs. Then touch the "g" and "s" it should peg all the way. This means the gauge is operational and is a good indicator it is working fine. However, to be certain of its accuracy, substitute a 100 ohm resistor for the sender in the system. Turn the power on. The gauge will read 40# on an 80# gauge.

For the sending unit:
Take note of the oil presser as stated by the gauge after a 15 minute warmup. Remove gauge sender wire from the sender. Place wires from a Volt-Ohm test meter on sender and a good ground (like the side of the sender). At pressure the sender should read:

30 PSI around 125 ohms
40 PSI....100 ohms
50 PSI....87 ohms
60 PSI....67 ohms

Hope this helps you.
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Old 04-18-2005, 01:31 PM
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jsonova99 jsonova99 is offline
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mine did the exact same thing, $20 sending unit from Skidim, problem solved!
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Old 04-18-2005, 03:33 PM
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LakePirate LakePirate is offline
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This all happened after I towed a Barefoot Nautique to the dock; maybe that had something to do with it *grin*
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Old 04-18-2005, 04:08 PM
Tennesseeski Tennesseeski is offline
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Lakepirate are you a Tennessee fan? I just noticed smokey!!
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Old 04-18-2005, 05:07 PM
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LakePirate LakePirate is offline
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Go Big Orange!
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Old 04-18-2005, 05:53 PM
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Go Big Orange!
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