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Old 01-28-2014, 03:35 PM   #11
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Generation 3 fuel pump/ cooler, the paint inside of it peels off and clogs your fuel pressure regulator and this makes the boat piss up unburn fuel into the exhaust making your boat very inefficient on fuel... Best way to test this is with fuel gauge connected to the injectors line or removing the fuel pressure regulator at the pump and inspect....
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Old 02-02-2014, 09:30 PM   #12
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Default Mercruiser Cool Fuel Module

Rodrigo, you are right on about the Mercruiser cool fuel module ... I've had high fuel burn and was told by the mechanic it was paint peeling off from the inside and getting caught in the filter.

I'm curious, did you ever replace the Cool Fuel module? I'm thinking about it, but it's a lot of money, over $1000.

Oh well BOAT = break out another $1000 I guess..
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Old 02-14-2014, 02:29 AM   #13
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Iceman, I did not replace them, too much money! I found that the peeling off came mostly from the covers. I though about replacing the covers instead, but since I had to buy the new regulators. I just clean them with a wire brush attached to my drill, I took most of the paint off. I believe the actual cap was like $200. I have twins so everything is X2. So I went the cheap way out. There is also a big o ring that goes around the cap and a small one that goes on the end of the fuel line. There are two fuel pressure regulators one at the cooler the other one at the injectors rail, I only had to replace the one at the cooler for like $70, the one at the rail is like $250. Crazy money... Be careful when you take the cap out... I broke one of the bolts that holds it... I had to use a drill and a broken bolt extractor bit to remove what was left of it... By the way the one bolt that broke was $35. Not cheap at all. Good luck!
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