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Old September 8th, 2016, 06:36 PM
WE7X WE7X is offline
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Location: Issaquah, Washington
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Default Re: Water/coolant blocked

That is actually rather common..to have the heads identical... for manufacturing reasons.
The Ford Ranger V-6 (~1999-2004? vintage) has a somewhat common problem with cracked cylinder heads, causing a slow water loss. It shows up in the front cylinder of the head casting on the driver side bank, and in the rear cylinder on the other bank, due to a design flaw in the casting.

Rod Johnson
Issaquah
1970 RM-5700
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