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View Full Version : Low water pressure - Merc 200 EFI



e2rbl97
03-15-2010, 04:35 PM
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<!-- / GOOGLE AD CODE ADDITION END --><!-- message --><!-- BEGIN TEMPLATE: ad_showthread_firstpost_start --><!-- END TEMPLATE: ad_showthread_firstpost_start --><!-- google_ad_section_start -->Guys,

I know similar threads have been asked in the past, but I can't seem to find a situation like mine. I just bought a 2000 Merc 200 EFI and noticed that the water pressure gauge does not register pressure until about 2000 RPM at which time it goes to about 10 psi. It does have a stream thru the tell, but not really strong. However, it has not sounded any alarms.

1. Is there a way to check the temp alarm to make sure it is working?

2. Is it possible that the pressure gauge is not working correctly?

3. Other than changing the water pump and T stats (which I am about to do), is there anything else I should look at (i.e poppet?)<!-- google_ad_section_end -->