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    What size adapter do i need for newer trim pump?

    Yeah, you're talking really old. Haven't seen a pump painted white in a long time. You may be able to get adapters but they need to be flared fittings which are sae threads. Pipe thread fittings will not work
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    Cooling issue... '89 VP AQ271C

    I would back flush from the sea water pump inlet hose through the transom and out the drive. Check for a restricted flow/leaks
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    Still no power

    Okay, you know base timing is correct. Did the mechanic tell you that the timing is advancing? You have not informed us of that yet... 4psi fuel pressure is fine, with no load. You need to check fuel pressure under load especially at the rpm you're having issues. Also you should check fuel pump...
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    What size adapter do i need for newer trim pump?

    No, thread the hose ends into the pump FYI black/gray hoses are up/down specific
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    Cooling engine - direct water hookup

    Only if the belt isn't turning the sea water pump
  6. D

    New lower shift cable

    I wouldn't install a sierra brand alpha shift cable, only oem I've replaced more brand new sierra cables than I care to remember
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    New lower shift cable

    Did you make sure the roller on the shift shaft arm was seated properly in the shift cable slide when you reinstalled the drive?
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    470 Timing

    Choke open fully? Is the firing order correct? Have you investigated fuel supply?
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    aq115 oil and water mixing

    No, you bypass the water/coolant side of the cooler, not the oil. Couple barb fittings and proper length of hose ought to do it
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    No power past 4000 RPMs

    Start with a full tune up, replace fuel filter(s) and inspect contents. I'm guessing this is thunderbolt ignition? Have you replaced the ignition sensor with the latest OEM three wire and properly grounded? Could possibly be the carb, check fuel pressure/vacuum
  11. D

    aq115 oil and water mixing

    You can bypass the cooler, won't hurt for temporary testing purposes. Other culprits could be cracked block or head, possible head gasket failure
  12. D

    Need Help on 5.8fsi Couple of Issues

    You need to find out if you are loosing fuel or spark. You say you connected 12 volts to the pump and same results. You mentioned in an earlier post two pumps? Did you 12 volt both? Have you checked for loss of spark?
  13. D

    7.4mpi just started running rough and with gas coming out exhaust

    Keep in mind this is a requirement for accurate results. Most likely a regulator/damper on the fuel rail as well
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    4.3 Volvo penta carburetor

    1/2 turn out on a Holley (which I'm guessing you have) isn't uncommon for idle/air mix. As stated those control fuel, not air and only at idle speed. When was the last full tune up, with fuel filters?
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    1999 Volvo Penta 5.7 GSI Throttle Issue

    Not properly adjusted throttle cable comes to mind. Needs to be adjusted/set with the throttle closed/idle with slight preload again the throttle arm stud
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    VP 8.1 GII-E starting issue

    Sounds like a main power relay having intermittent issues. Easy test, just swap from other motor and see if the problem moves to the other motor
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    2003 Mercrusier 5.7 350Mag MPI vs. 2001 Mercrusier 5.7 EFI?

    If fuel economy is high on your list you may consider other hobbies than power boating. As stated, best option is the one in better shape, less hours, proven routine maintenance, etc....
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    Drive stays in position where set downwards and upwards…but…

    At this point I'd say you have one or both rams leaking internally or a faulty valve in the pump itself. Rams can be rebuilt or purchased aftermarket, pump valves ought to be still available oem
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    Mercruiser 5.7l carb, audible alarm test does not sound unless the trim up/down button is pressed

    Most likely corrosion, faulty ground(s), deteriorated wiring, loose/worn connections, stripped/crossed wire(s) or someone changed wiring the incorrect way
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    Making sure I purchased the correct coil for a 1996 5.7L

    Best is to stack it next to the main battery ground on the flywheel cover stud. Thus ensures the best ground possible and why the ring terminal for the ground is 3/8" Grounding this way is required for efi engines but also recommended for all thunderbolt ignition systems
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