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  1. M

    '98 4.3 v-6 4bbl engine knock

    I finally got the engine running great. Tonight, I was tooling around the pond, everything running great, then the boat bogged down. Pulled it back to idle, and heard it knocking, 1 knock per rev. Shut it down, nothing leaking, smoking, etc. I was a little way from the ramp, so I started it up...
  2. M

    Vibration with drive trimmed up

    Hi guys- Was out today and noticed a new problem, when I have the drive trimmed up, maybe half way, I am getting a vibration, if I trim it down, it goes away. I am thinking the u-joints in the gimble housing. What do you guys think? Thanks, Mike
  3. M

    Merc 4.3 Water in Cylinders

    Happy 4th of July everyone! I have a 1998 Merc 4.3 V-6, 4 bbl, rwc, Alpha One. Been having this ongoing problem since I got the boat 4 years ago. I purchased this and had the marina install new manis and risers(genuine Merc, not aftermarket) as well as some additional items. I have been having...
  4. M

    1996 4.3 v-6 hard starting- cold or hot

    Am having a recurring starting problem w/ my 4.3 rwc alpha one. Either hot or cold, it takes a lot of cranking to get it to start. 2 years ago, I had the marina go thru it and they rebuilt the carb and installed a new module in the distributor, it worked great, started right up, ran great...
  5. M

    1998 4.3 Hard Starting- cold or hot

    HellI have a 1998 4.3 alpha, rwc 4bbl carb. It runs fine, have had a few issues but thanks to this forum, i have been able to fix them. Now I have a new problem, it is hard to start either hot or cold. Had this problem last year, took it to the marina, they rebuilt the carb, and replaced the...
  6. M

    43 V6 Water in cylinders

    "Hello Guys- You have helped "Hello Guys- You have helped me in the past, and hopefully you can do it again. I have a 1998 4.3 V-6 RWC,4BBL, Alpha drive. I bought this boat in Aug '07. Right when I bought it, I had the manifolds & risers replaced. It had the original, 1- piece manifolds. So...
  7. M

    Alpha One water leak

    "Hello Guys- I have an ongoin "Hello Guys- I have an ongoing problem that I still haven't solved. Just a brief summary, it is a 1998 4.6 rwc w/ alpha one drive. Problem w/risers on stbd side running hot, engine does not overheat. The last advice you guys gave me was to check the impeller in...
  8. M

    Re archive thread June 292008 543pm 50 alpha 1 gen 2 starboard riser hot

    "hello- I was just looking thr "hello- I was just looking thru the archives looking for a solution to a problem I have, and this thread is my problem EXACTLY! the only difference is my motor is a 1998 4.3 alpha rwc, new manifolds and risers, changed because they were the original 1 piece...
  9. M

    43 lx exhaust temps

    "I have a 1996 merc 4.3lx v-6. "I have a 1996 merc 4.3lx v-6. New manifolds and risers last year. The starboard manifold & riser will get hot to the touch. The port side is perfect- cool to warm. When testing it out of the water, on the hose, I will get steam and little water flow exiting the...
  10. M

    43 timing noise

    "Hello- I have a '98 4.3 "Hello- I have a '98 4.3 in my boat. At idle, there is a noise coming from the front of the engine. It sounds like a loose timing chain. However, the engine is still in time and runs great. When you raise the throttle, the noise goes away. Is this a problem w/ these...
  11. M

    Exhaust riser temps

    "I have a 1998 4.3 merc. I jus "I have a 1998 4.3 merc. I just had new manifolds + risers installed. Now the starboard riser is warmer than the port side which is cold.There is good water flow to each side, but what I noticed is that the hose going to the starboard manifold from the thermostat...
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