I just got a 99 opti, and it works great, good tell tale in the water, but not on muffs. Anyone know if this is normal or not?
I just got a 99 opti, and it works great, good tell tale in the water, but not on muffs. Anyone know if this is normal or not?
Not normal, though you've not really provided engine engine info to work from to be of a lot of assistance.
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 47 years (learn something new every day).
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Engine serial number will properly ID the engine since Mercury does not use years.
The telltale from your Optimax is the compressor cooling outlet only and a critical indicator the compressor is receiving coolant flow. If the telltale is present when on the water, it might be fine. If you don't know when the water pump was last serviced, it might be wise to replace it, ensure the compressor strainer is clean, and check annual service items are current.
There's a very helpful FAQ at the top of the 3L (what your engine is) forum with several great topics for maintaining your Optimax, here are a few of the most important ones (there are several more)...
Recommended Annual Maintenance or Winterization for Optimax Engines
Oil, Battery, Spark Plugs, Fuel and Fuel Additive Recommendations
Compressor STRAINER Cleaning
Proper Warmup and Cold Water Operation
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Phil
'09 Hewescraft ProV
'09 150 Optimax
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Phil
'09 Hewescraft ProV
'09 150 Optimax