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  1. J

    Installed fuel filter+valve. Is running carb dry going to hurt the fuel pump?

    My boat sits a lot. I had lots of carb problems and had to rebuild it recently. The carb had lots of deposits from fuel sitting there (despite using stabil). Have a picture if one is interested. I decided to upgrade to fuel filter and fuel valve between the tank and fuel pump. Now when boat...
  2. J

    Why mercruiser 3.0 spark plug gap increased from 0.035 to 0.045?

    According to the owner manual for my 2003 model, it's supposed to be 0.045 (1.14mm). However, some older merc manuals covering the Delco EST Ignition (I think I have this one) talk about 0.035 (0.9mm). If one looks up aftermarket plugs for this motor (like NGK) they are listed as either 0.035 or...
  3. J

    can't remove antisyphon valve, any tips?

    I suspect I have fuel starvation, as idle is poor and engine often dies when idling at the end of boat trips, but not at the beginning or on the muffs. So, I purchased a new valve, but can't get the old one off. I tried penetrating oil on the treads multiple times, but the pipe sealer is...
  4. J

    what size of anti-siphon valve in Bayliner 175 with 3.0L Mercruiser?

    I see 2 sizes in Iboats parts: 1/4 or 3/8 thread: http://www.iboats.com/Moeller-Aluminum-Anti-Siphon-Valve/dm/view_id.392106 Which one to order? Thanks and pardon my ignorance!
  5. J

    2003 3.0L dies in idle after mercarb rebuilt

    A couple of people mentioned on this board that chances of successful carb rebuilt is only 50/50. They may be right. While the engine works strong at 1000-4000 RPM, it often dies at idle speeds. Sometimes it doesn't. When it doesn't, the idle speed is ~800 RPM and engine is smooth, except for...
  6. J

    TWC3 oil works as gas stabilizer during long term storage?

    :confused: This is what I read on Model T forum: http://www.mtfca.com/cgi-bin/discus/show.cgi?tpc=118802&post=278496 I'm intrigued as I experienced problems staring my boat after prolonged storage (due to dry bowl) despite using Stabil religiously. After 9 years the carb looked like this...
  7. J

    not able to post new threads after being inactive since 2008

    I registered with iboats in 2008, posted a few times and then became inactive (and did little boating too). Came back today and wanted to post and could not. I ended up registering under different name and email. Is this a known feature of iboats?
  8. J

    Questions on Mercarb bowl capacity, running carb dry, and some more related issues

    I recently rebuilt my Mercarb after it was badly gunked up after 9 years of using gas with stabil (the boat sits a lot though and I drained over 1 year old gas twice). However, I forgot to measure capacity of the carb when it was apart. When I primed the rebuilt carb, it took ~60-70 cc of gas...
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