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  1. ThndrSki

    2002 Mercury 9.9 4 Stroke Air Mixture Adjusting Procedure

    Hello, I recently acquired a 2002 Mercury 9.9 4 Stroke standard shaft, and I rebuilt the carburetor using the Mercury kit. During the process, I noticed I do not have a plug over the mixture adjustment as some have stated, and also the carb kit came with a new air adjustment screw. Previous...
  2. ThndrSki

    Alternators - Testing and Philosophy of use

    The older I get with boating, the more I have come to expect a reasonable life of use and not take any chances with something that can strand or cause great inconvenience. Partly the reason I now load test my batteries etc etc. This weekend, with 2 batteries less than a year old, I went to...
  3. ThndrSki

    350 Mag Alpha Water Circulation Pump Wobble

    Hello all, I'm really just writing here for some advice on those have replaced their water circulation pumps in the past. I have a 1995 350 Mag Alpha Circulation pump that I can deflect the pulley and shaft almost a few degrees. It wobbles quite a bit to my surprise and I know that means it's...
  4. ThndrSki

    '95 Mercruiser 350 Mag Mechanical Fuel Pump Replaced - No Pressure

    I was getting no fuel pressure previously, checked for issues with blockages to the tank, check valve, etc. All proved negative. I also hooked a line to the inlet side of the fuel pump and nothing. I replaced the fuel pump by holding the push-rod up in the cavity and sliding the new pump in...
  5. ThndrSki

    1995 350 Mag Mechanical Fuel Pump Issue?

    Hello, I have a 1995 350 Mag Alpha with a mechanical fuel pump placed between a fuel/water separator and the Weber carb. Last time I ran the boat, everything ran great - a few months later, I go to fire it up, turns over nice but nothing. Plenty of fuel in the tank, so I pull the separator...
  6. ThndrSki

    Manifold Drains - To Drain or Not to Drain?

    What is the best procedure after flushing? Pull the manifold drains or leave them? I live in Tampa so not concerned with freezing, and I do pull the drains when I know I'm putting the boat up for extended periods of more than 1-2 weeks.
  7. ThndrSki

    1995 350 5.7L Mercruiser Engine Bogging and Backfiring Under WOT

    Hello, I have a 1995 Mercruiser 350 Mag 5.7L that is bogging/stalling on the muffs on the trailer. It has a Weber 4bbl carbeurator, whichh if I take the flame arrestor off, I can see the secondary arms turning, but the butterflies inside with the weights just barely move. I also cannot see...
  8. ThndrSki

    1995 5.7L 350 Mag Alpha - Water in Starboard Cylinders Only

    Hello, I was wondering if someone could possible help me diagnose some potentially bad news. Today I took my boat with a 1995 5.7L 350 Mag Alpha Mercruiser to the Gulf to run it around after using it the entire Memorial Day weekend, running approximately 45 gals of gas through it. This weekend...
  9. ThndrSki

    Bowrider - Build a Plywood Cover?

    Hello, I have a 19ft Baja Bowrider and I was wondering if anyone has ever built a "plywood cover"? What I mean by this is a few plywood boards strung end to end with a hinge over the windshield so you can quickly put the cover over it. Today, I have one of those strap systems to "help" keep...
  10. ThndrSki

    Water in Cylinders Part II

    So I posted here before about finding water in my cylinders on my 5.7L Magnum '95. I pulled the risers and manifolds and they were definitely in desperate need of replacement/attention. I replaced them with OEM Mercruiser manifolds, risers and gaskets. I thought this was the issue, but I took...
  11. ThndrSki

    Engine dies in reverse on Muffs - Question.

    After replacing the entire exhaust system on my 5.7L Alpha One Magnum, is started the engine on the muffs running on the trailer, and attempted to put it into reverse. The gears grind slightly then it causes the shift interrupt switch to enable. It was working fine before I replaced the...
  12. ThndrSki

    Starter and Trim Motors Just Click?

    After putting in new exhaust and riser elbows, changing plugs, all fluids, I started the engine. It started right up and I ran it on the trailer (on the hose with the flusher) for about 20 minutes until it was all warmed up. All functioned properly, and I was showing a good charge on my two...
  13. ThndrSki

    New vs Old Exhaust Kit

    I replaced the exhaust kit on my 1995 5.7 Mercruiser with this kit. http://www.mercexhaust.com/oem-mercruiser-small-block-center-riser-exhaust-manifold-kit-5-7-5-0-6-2-1986-2002/ Everything fit as appropriate, I was wondering during the repair the difference in the new Elbows? they have a...
  14. ThndrSki

    Repair & Replace my Exhaust Manifolds and Risers - Bolts!

    I'm repairing/replacing my manifolds and risers on my 5.7L Mercruiser. I need all new bolts as half are rusted, sheared, and one I had to drill out as the head was completely rusted off. Anyone know the exact sizes of the riser and manifold bolts or a source where I could purchase for a...
  15. ThndrSki

    Manifold Kits: "E-Coated" or Ceramic, OEM or Aftermarket?

    If you look at mercexhaust.com, they have exhaust manifold kits that are "E-Coated", and they say they are fine for Salwater over the Ceramic Coated ones... anyone have a feeling on this? Also, is this the cheapest place to buy a whole kit OEM? I really would like to stay OEM as they lasted a...
  16. ThndrSki

    Risers or a Head Gasket??? Need Help and Advice w/ Pics

    I live in Tampa, FL, and had the boat out about 6 times this year and it has performed magnificently... Took it out on Memorial Day, ran it 3 times without incident and on the 4th time, I stop the boat, and the starter made a nasty clunk then free spinning... I was towed in, pulled the plugs...
  17. ThndrSki

    Revolution 4 Question for Baja 19' Islander

    1) Current SS prop is allowing Engine to Redline. 2) Michigan Wheel, Apollo XHS, Stainless Steel. 3) 14 3/8 diameter, 18p 4) 4800, Speed Unsure of as I have never GPS'ed it.e load (very helpful) 5) Mercruiser, 350 Magnum 5.7L Alpha One, 1995, and 250 HP 6) Baja Islander, 1996, 19' 2800 lbs I...
  18. ThndrSki

    Trim Molding/Windshield Snaps - Channel Molding Source

    I'm looking for a source on "channel molding", or U Channel molding. (Not sure if I'm using the right term here... It's basically the trim molding that goes arouund the passenger/driver kick boards, engine compartment on the finished fiberglass where it has been cut and shaped to hide the...
  19. ThndrSki

    1995 Baja Islander 188 25th Anniversary Edition

    Here's pics of the rig I'm working on now! Doesn't look like many people post to this Baja forum here.....
  20. ThndrSki

    Starter Shims - Mercruiser 5.7 Liter GM 350

    Hello all, Brand new to the forum but I just wanted to share some experiences I just had with starter shims on my 1996 Baja. I purchased the boat 3 months ago and after a few outings the starter would just spin, etc. It all check out ok but just to be sure, I purchased a brand new, OEM...
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