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    Where is the Fuel Pump/Cooler assembly on a Mercruiser 4.3L MPI?

    dunno, can't see it IV has the "basket" style filter housing held in place by three bolts, located fwd stbd side of engine
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    Where is the Fuel Pump/Cooler assembly on a Mercruiser 4.3L MPI?

    cool fuel III is located along the stringer between the engine mount and block cool fuel iv is located front stbd side of engine about halfway between top and bottom of engine
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    High Temperature Alarm Diagnosis

    take readings in multiple places but be sure to focus on the surrounding area where the overheat switch/sensor is located
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    High Temperature Alarm Diagnosis

    the overheat alarm sensor is normally open internally, when the temperature of the cooling water exceeds the threshold of the potentiometer inside the senor, the sensor closes internally and completes the audio warning circuit to ground through the engine block thus allowing the warning horn to...
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    Power Steering high pressure hose coating flaking off

    bring the hose to them and tell them its a power steering line for the pressure side they will get the right hose and fittings for you, and match the flared fitting end thread sizing
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    Bog at 1,900 RPM

    start here: https://forums.iboats.com/threads/how-to-testing-your-boats-fuel-system.278553/
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    Outdrive swinging

    never run the engine or even attempt to turn it over with the drive in the trailer position, as stated this is most likely the cause of the broken u-joint oil in the bellows indicates the yoke seal at the input shaft is leaking and needs replaced. a pressure test can confirm this as i...
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    4.3 blows 15a fuse when you throttle up

    that's even worse, the drive unit is not designed to be be spun out of the water at high rpms like you posted, anything off idle in gear with no load has the possibility to damage drive internals under a load means in gear with the boat in the water, every turning component of the engine/drive...
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    4.3 blows 15a fuse when you throttle up

    4000 rpm in neutral is not good, no reason to go more than 1500 rpm in neutral. alternator should be putting out max voltage at 1000-1200 rpm most likely the rev limiter was engaging according to the info on the flame arrestor, WOT is 4400-4800, that is under a load with the correct propeller
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    Flame Arrestor w/Fuel Vent Connection

    the fuel pump does not have a vent, the yellow/clearish line you are referring to connects to the spill barb on the fuel pump. the reason for the clear fuel line to the carburetor is in case of a diaphragm rupture in the fuel pump resulting in raw fuel being dumped out the side, the barb and...
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    mercruiser 7.4 (L29) firing order

    yes, although i do not recall which pins need connecting
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    Throttle and shift cable for mercruiser

    see here: https://forums.iboats.com/threads/how-to-how-the-shift-interrupt-system-works.283168/
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    No water out of outdrive

    rough fyi, plastic housing will have indicators as to "in" and "out" hose connections. all mercruiser oem sterndrive engines are standard (LH) rotation
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    mercruiser 7.4 (L29) firing order

    engine would not run if the distributor was out 180
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    EVC code; starboard engine acting like limp mode

    best course is to use diacom to check engine data/fault codes. local reputable shop should have one volvo is notorious for using vague codes, they have their own language it seems
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    Outdrive swinging

    sometime the volvos do that after extended layup check the power steering fluid, add if necessary. then with the engine running turn the wheel full port/stbd multiple times to bleed the system if the actuator continues to behave violently it may be time to replace it, is not a rare occurrence...
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    mercruiser 7.4 (L29) firing order

    okay, seeing as how you didn't check the firing order on the old wires there's the possibility that you may not have connected the #1 wire to the proper post. best course of action is to pull the cap, verify TDC #1 compression, note rotor rotation, then you can attach the leads accordingly...
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    Mercruiser Engine Mounts

    1. should be, guessing that's weight per mount = 700lbs 2. most mounts are held down with 1/2" stainless lag bolts and sealant/adhesive 3. possibly, some of the non balance shaft 4.3 used a fluid filled mount, easy to ID by the cable straps fore and aft of the fluid bushing on the mount. Do...
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    mercruiser 7.4 (L29) firing order

    okay, but did you actually verify good consistent spark? would be next to impossible to install the rotor 180 off have you inspected under the distributor cap? usually when replacing the plugs its a good idea to r and r the cap/rotor as well
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    1981 MerCruiser Outdrive Water Pump

    i would go with the latter of the two links you posted, the amazon one appears to be sierra. never had any luck with the sierra pumps, you're better off with oem fyi the second pump assy does NOT include the base assy which you definitely should be replacing as well
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