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muc replied to the thread Merc 250 Verado Fuel increase.

Might check the battery in your meter, my cheaper meters tend to start drifting off when the batt starts getting lower -- my high buck...

Tuesday at 7:49 PM
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muc reacted to Fun Times's post in the thread 5.7 gsi pwtr Timing shunt procedure contradictions with Like.

It’s A and B for sure…

Tuesday at 7:36 PM
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muc replied to the thread Advice / Tips for Draining Old gas and checking fuel lines..

The biggest mistake I see when a DIY tries to drain their fuel tank. They try to suck it out with the existing fuel lines. This results...

Tuesday at 7:05 AM
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muc replied to the thread Merc 250 Verado Fuel increase.

Something that popped into my head, it doesn't fit with the vibration you experienced. But might be something that could effect the...

Monday at 2:32 PM
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muc replied to the thread 5.7 gsi pwtr Timing shunt procedure contradictions.

Thanks to @alldodge back in 2016. Note that you do this after engine is up to temp and running when you jumper.
Mar 29, 2026
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muc reacted to cobalt1999's post in the thread 5.7 gsi pwtr Timing shunt procedure contradictions with Like.

Being this is a GSI and also applies to the GI, you do not use a shunt. The computer controls the timing. To put the system in base...

Mar 29, 2026
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muc replied to the thread Merc 250 Verado Fuel increase.

Soo sorry this is happening. Most boaters would be devastated. I hope they make you right. "They need to fix what they damaged" Yes you...

Mar 26, 2026
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muc replied to the thread Larson, 4.3 GL-J, SX-A electrical gremlins.

I don’t agree with this statement. I’ve worked on hundreds of carburetor boats that have hour meters. Hour meters came stock on many...

Mar 26, 2026
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muc replied to the thread Larson, 4.3 GL-J, SX-A electrical gremlins.

1+2 - this is the oil alarm sender, replace it, it tested bad. 3 - oil gauge sender will be aft of the carb, very near the distributor...

Mar 23, 2026
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muc replied to the thread Merc 250 Verado Fuel increase.

Techmate should have a run fuel pump function.

Mar 23, 2026
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muc replied to the thread Merc 250 Verado Fuel increase.

Did you run the pump long enough to get fuel with no air in it? I would try to avoid getting confrontational with Merc until they...

Mar 23, 2026
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muc replied to the thread Merc 250 Verado Fuel increase.

Yes test equipment like meters and gauges need to be double checked every once and a while. Suggest you hook up shore power overnight...

Mar 23, 2026
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muc replied to the thread Merc 250 Verado Fuel increase.

Yes, I've heard about this problem from customers. It seems the water in fuel harness can get out of place when changing the fuel...

Mar 23, 2026
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muc replied to the thread Merc 250 Verado Fuel increase.

Good you found the issue with leaking. My guess is nothing will happen. You should still be in the EPA warranty, so still within your...

Mar 23, 2026
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muc replied to the thread Merc 250 Verado Fuel increase.

You should never have to use any tool to check fuel pressure. Yes, it sounds like you may have damaged the schrader valve threads. Stop...

Mar 23, 2026

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