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  1. Texasmark

    I have 1999 Mercury EFI 150 and the bottom end has clunk when accelerating not every time. Also the rpms have increased from 5200 to about 5800 .

    The rear of F gear and front of the clutch dog are sawtoothed. The driveshaft drives the F and R gears simultaneously and neither are connected to the prop shaft via the clutch dog in N gear. The sloping part of this sawtooth is your overrun clutch and allows the engine to run slower than the...
  2. Texasmark

    DVA stator testing

    Since you are dealing with electromagnetics and the energy comes from a fixed magnet on the flywheel, V = L di/dt. L is fixed in the windings and core of the pickup coils and the electromagnets embedded in the flywheel. Di/dt is your rate of charging which increases as RPM increase (since time...
  3. Texasmark

    Fuel connector compatibility issues.

    I bought a new gas tank a couple of years ago and it had a funny connector on it. Since I was in WW, in the Sporting Goods Dept., I went over to the marine nick-nack rack and lo and behold was a mating connector and the fuel line tube was sized for 5/16" adequate for I engines or 3/8 for V engines.
  4. Texasmark

    Low RPM but good performance

    Your tach says you are way high in your prop pitch....your hole shot says you are fine with your prop pitch. 70 HP isn't a lot especially a Yammie (opinion due to cubes) on your rig but 15 isn't a lot of pitch either. I'd say it's doing a fine job. I'll check your tach for you...guessing your...
  5. Texasmark

    Through hull transducers

    I currently have aluminum and have had several boats including glass with the ducer mounted inside near the keel and just forward of the transom. A good bubbleless epoxy and push the ducer down till in it till it squishes out the side and hits bottom. I'm running 2 of those birds you...
  6. Texasmark

    Bay boats offshore

    I don't fish offshore but have encountered significant sized waves....hiding the boat from the horizon occasions, and wave length that allowed the boat to sit level for several seconds, in the trough, before changing direction. My choice, were I to go out today would be deep V and high flare...
  7. Texasmark

    SHIFT shaft removal.

    I really doubt it is bent unless somebody, at one time used undue force to get the LU and midsection section mated. The diameter to length ratio is too big. I'd be more apt to look at the shift rod in the midsection. The interface is tight and the splines have to be lined up exactly....may be...
  8. Texasmark

    Forward and reverse help!

    My experience with the Merc LU shifter is that the relaxed position of the shift mechanism is that the spring loaded "cam follower" on the front of the prop shaft is the farthest forward, relaxing the pressure on the spring behind it on the prop shaft. The cam follower follows 3 detents in the...
  9. Texasmark

    Profiling change

    That worked, thanks.
  10. Texasmark

    Profiling change

    OK thanks.
  11. Texasmark

    Profiling change

    Can't seem to find out how to change my profile with this new software. Pull up ME and click on the only cue that seems applicable and it takes me to a blank drop down window wanting me to select an item....of which there are none. I want to change my current boat.
  12. Texasmark

    Outboard Overheating?

    Follow the tube back to the origin. Where is it connected? I ask the question as you have the exhaust loop and the powerhead loop controlled by a thermostat and possibly a higher rpm popoff valve...not up on your engine. The Tstat will make the water in the block hotter if tapped off there...
  13. Texasmark

    1954 Gale buccaneer

    Agree with the answer. I remember back in the day. A sporting goods store was on the main drag the next block over from my house. Inside was a Holmes Boat Works, Harrisburg Rd., Houston, Tx. plywood skiff of 16' with a wide beam, varnished as was the case back then, sitting on some cushions...
  14. Texasmark

    Did I make a bad mistake?

    The brown wire is usually the Over Temp sense since the sensor is buried in the water jacket cover right where you are pointing. It supplies a ground when experiencing temps in the 195F range to the warning horn located in your control box or close to it. Thermostats usually run between...
  15. Texasmark

    Cleaning pontoons

    Muratic Acid is what OTR truck wash stations use to make 100 gallon fuel tanks sparkle. Your requirement may require some removal of marine growth before the acid can get to the aluminum if you decide to use that.
  16. Texasmark

    Mercury 80hp 800 1970s LU oil type

    Mercury/Quicksilver Premium works just fine, in a quart with a pump and connection hose at WW sporting goods dept...where you buy your TC-W3 oil...on the same shelf, for a reasonable price. Just need a quart
  17. Texasmark

    1998 mercury 60hp oil pump removal questions

    Well when I did my 90 2 stroker, I came home from an outing one day and with the engine in that configuration, I undid 3 screws and one hose to get access to the drive gear/shaft (sticking out of the pump)...pulled it out, no other parts visible, stuck the pump back in, reinserted the hose and 3...
  18. Texasmark

    Radar Arch Boat Stability 20’ Crestliner

    I'd mount it to the side of the steering/instrument console with a flange screw mounted to the floor (deck) and support brackets, 2 at least supporting it against the console. I have super large unbrellas I use in the summer and I mounted a support pole for them in this location and it's...
  19. Texasmark

    Continuous Beep - Beeeeeeeeeeeeeeeeeep

    Yeah, Faz, I totally missed the 1987 year model...another brain fart. I had a 1988 115 tower and would have known better.
  20. Texasmark

    1995 0r 96 Merc. 2 stroke 40 HP Smoke comes out cowl

    Is is smoke or steam? Is it coming from under the cowl, or just behind the cowl at the rear of the engine, a few inches below the bottom of the cowl....the holes in the midsection used for exhaust relief when boat it in the water, engine running but not moving...designed to do that. Oil on the...
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