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  1. tango13

    MC TB5 Throttle/neutral issues

    For consideration, I had an issue a few years back where the throttle for my Bravo1 would sometimes struggle to find neutral, and the button had issues engaging. This made cold starting a nightmare as the button wouldn't do anything. Always thought the problem was in the shifter but my mechanic...
  2. tango13

    Strange exhaust behavior during winterizing

    My guess is your single point drain worked fine and you did drain all the water - i would open it again and see if antifreeze comes out. Sometimes it takes a few seconds for the block to full after you've drained it, and that's what caused your concern. I usually drain all my plugs and toss in...
  3. tango13

    Spark plugs and cap replacement interval

    I think it really depends on the conditions your run you boat: fresh vs salt, mooring conditions, amount of use, ect. I put 15-25 hours a year on mine (7.4 merc), in fresh water. Bilge is spotless, rarely has water on the bottom. Stored indoors. Recently did a full ignition tune up after some...
  4. tango13

    Thermostat/temp

    My temp gauge for my 7.4 doesnt have #s, just low and high. Mine always is a tad over the middle - no clue what temp its saying, but I have a 160f tstat and im always comfortable if the gauge reads the same spot when its up to temp. Also had an older 5.7 in another boat that always barely got...
  5. tango13

    Plug Wires and coil lead

    I went with Moroso Ultra 40 race wires for my 454 - the ones i got are engine specific (BBC) and designed to go "under headers" for extra length. I like them because the plug ends are shrink wrapped onto the wires from the factory for extra strength and protection against moisture. They also...
  6. tango13

    older carburetated mercruiser 5.7 hard start

    Double check your connections on the sensor and the coil. If you still have no spark, put your old coil back on and test. The TB ignitions use a low resistance coil and i found it almost impossible to find the resistance ratings on any amazon/part store coil without testing. I used an MSD 8222...
  7. tango13

    older carburetated mercruiser 5.7 hard start

    Wouldnt crank or wouldnt fire? If you swapped the coil, hopefully it was the correct resistance and wires were put back in the correct way, same with the sensor.
  8. tango13

    older carburetated mercruiser 5.7 hard start

    assuming your cap and rotor havent been changed, i would do them too
  9. tango13

    older carburetated mercruiser 5.7 hard start

    my carbed 7.4 w/ TB V ignition was having starting issues (cold and hot), and my pickup looked the exact same. I swapped out the sensor, cap/rotor, wires, and COIL and it mad a world of difference. Everyone will tell you that the coils never fail but I can tell you that the coil was the last...
  10. tango13

    7.4 merc won't start after winter storage

    my carbed 7.4 is an absolute bear to start after not being used for an extended time. I usually crank for 5-10 seconds to fill the bowls, pump twice and leave at quarter-ish throttle, and then crank again, and it usually fires. Sometimes it cranks a little longer with extra pumping. When im at...
  11. tango13

    Mercruiser Exhaust Tube vs Exhaust Bellows Opinions, and Part # for Tube.

    I had the tube on my old 5.7 and it sounded great - ended up doing the same on my 7.4 - mechanic recommended it while he was doing some other service on my B1. Both were noticeably louder. Its all preference, I personally like noisier boats but I know others really dont!
  12. tango13

    TB 4 AND 5 COILS

    I went through this same issue trying to match up specs, none of the replacements I could find were confirmed to be correct. I ended up using the MSD #8222 with my TB5. Came recommended by a few different folks. Works great so far, and was cheaper than a mystery coil.
  13. tango13

    Electronic Ignition part number and Non-Resistance spark plugs

    I've ran Pertonix ignitor kits in my old ford F100 and two older mercruiser V8s (228 and a 260), and personally I've never had issues. All motors started/ran instantly better after installing the kit & coil. Like anything, I'm sure they have had their issues but personally I wouldn't hesitate...
  14. tango13

    Stupid me, no oil

    Do you think your leaking a qt every 10 hours or burning? Do the 4.3's have the oil pressure sending unit in the back of the motor like the V8s? If so, maybe your leak and slightly off pressures are stemming from that.
  15. tango13

    Still chasing hard warm starting, 7.4 carbed

    Sorry to the moderators for posting on an old thread but I would provide an update on this for anyone in the future. Boat started like crap when all all summer in 2023. That fall before I winterized it, I took off the ignition coil and it was nasty - the socket was full of corrosion, and the...
  16. tango13

    How do you all like your remote oil filter setups?

    Having had boats with both now, it’s a 100% worth it especially if you’re going to be pulling the motor anyways. I did a bit of research on kits for my old boat with a 5.7 and I remember there being a wide range of kits from very cheap to very expensive. If I were you, I would find the merc part...
  17. tango13

    4.3LX & Weber Carb Service

    Do you find that it floods after shutdown when warm? I suspect I'm having similar issues on my Weber (7.4), not so much the choke problem but def the dribble. The warm shut-down flooding being the biggest issue, was told floats could be out of spec or a needle issue. Starts great cold but is an...
  18. tango13

    Tune up question - ignition coil part #

    Thanks for that # (y), still considerably more but ill take a look. Yes it works, No its not broke. But I would rather know that I have fresh ignition system components vs dinking around on the water because 28y/o parts failed. I see zero point in doing a tune up without actually refreshing...
  19. tango13

    Tune up question - ignition coil part #

    1995 7.4 Merc/Thunderbolt Ignition S/N OF557755 Started the "tune up" process last spring by changing ignition wires and ignition sensor, and I'm going to finish up this fall by changing the cap & rotor. I know coils "never fail" but I'm going to remove mine to clean connections as my coil sits...
  20. tango13

    Power steering return line keeps blowing at cooler 95' 7.4 Bravo1

    Positive its a return line, threaded fitting on the steering ram side, and a rubber hose clamped on the cooler side. Quicksilver part# #32-806221. Agreed it should be very low pressure, open flow. My system works fine, and I've witnessed back flow from the pump reservoir back to the cooler and...
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