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  1. K

    7.4 MPI - bad sound

    Well i found the problem, it was a lifter and rod with to little oil, i opend the other refil oilcap and squirted some oil and the sound dissaperd. Why this started is still in the to do list, that lifter is the highest point of the engine because it's leaning a little, i have good oilpressure...
  2. K

    7.4 MPI - bad sound

    Sounds good, im going to rent the instrument over the weekend and also trubbelshoot the thread's main issue, ill come back with the results. / Kim
  3. K

    7.4 MPI - bad sound

    Ah.. okey. Well i don't really know.. it was a while since i made a real WOT test.. In my country (Sweden) we have so much Islands around and i dont open the trottle that often, but did your mecanic se the bad injector straight away with the instrument? / Kim
  4. K

    7.4 MPI - bad sound

    Hello, i have 5 blades props wich gives better fuel economy at lower speed but the downside is lower topspeed and max rpm's So i can't tell about the WOT rpm's, the engine goes even and smooth so i dont think i miss a cylinder. I had 7,4 MPI's before and also friends and i have heard a little...
  5. K

    7.4 MPI - bad sound

    Thanks for all advices, next week in going to troubleshoot the engine. Ill return with results. / Kim
  6. K

    7.4 MPI - bad sound

    Hello! Im got a new problem with one of my engines, when it's warm this sound accours. (Se the video) The sound is sometimes louder and sometimes almost gone. Last year i changed the belt, belt roller, waterpump, manifolds and risers om both of my engines so i dont think it's belt related...
  7. K

    Cutlass Bearing Life Expectancy

    Hello, What tools did you use to pull out the cutlass, did you rent or bought? I have a 340DA and i have a small play and i think it's time. / Kim
  8. K

    New manifolds and risers, air pocket?

    Yeah, that seems to be right, on my other engine the SB riser is the warmest also and both my SB riser i have my warm oilfilter mounted, that one is hot! In idel and slowspeed they are hand warm but how warm should do they get in fastspeed? Still hand warm? / Kim
  9. K

    New manifolds and risers, air pocket?

    Well the other riser on the same engine is colder and they both gets the same seawater, i dont think my seawater passes the thermostat just the oil and heat exchanger that should make them into the same tempature. Im going to test so they get the same water pressure on each side. / Kim
  10. K

    New manifolds and risers, air pocket?

    Hello, Mercruiser 7.4MPI with V-drives x2 / Kim
  11. K

    New manifolds and risers, air pocket?

    Hello, I have mounted new manifolds, risers, full flow gaskets as it was before, new exhaust hoses, new waterpump with impeller and so on.. on both my engines. I have a half closed coolingsystem At start up my port engine got seawater flow in about 4 seconds. My starboard engine diden't get...
  12. K

    Changing manifolds, problem?

    Hello, Im changing my manifolds and if i look/feel at the contact surface around the exhaust port of the block you feel that the surface is a little uneven/ruff. Not as smooth as the manifold, is this going to cause any problem with the gasket not keeping it tight? I haven't had problem...
  13. K

    8.1 Horizons Replacing Water Pumps and Manifolds

    Thanks for the tip! Im using a diffrent kind of extractor that have drill guides for diffrent situations to make sure the hole is dead on the bolt. http://www.biltema.se/sv/Verktyg/Skarverktyg/Gangverktygssats/Skruvutdragarsats-25-delar-2000040658/
  14. K

    8.1 Horizons Replacing Water Pumps and Manifolds

    Yeah, PB would be my first choice but here in Sweden WD40 is all there is... Maybe i should start to sell PB in Europé :-)
  15. K

    8.1 Horizons Replacing Water Pumps and Manifolds

    Hello, I bought this one: http://www.biltema.se/sv/Verktyg/Skarverktyg/Gangverktygssats/Skruvutdragarsats-25-delar-2000040658/
  16. K

    8.1 Horizons Replacing Water Pumps and Manifolds

    I totaly agree, second engine worked out fine. Yeah i bought a PRO set i got tipped from a mecanic there you start with drillning a deep center hole into the bolt and then you hammer in a pin with long threads in the hole and on the pin you add a nut that you grab on to unscrew the bolt. They...
  17. K

    8.1 Horizons Replacing Water Pumps and Manifolds

    Well now i did my second day and all the manifolds are finally off.. The key for success was not force, to bad I learned that after one engine :) as LG111 sad, a lot of oil and pressure on the bolt, oil and pressure then the will come out. Now to the snapped bolts. I had 15mm of the bolt...
  18. K

    Fluids for trim tabs 340 DA - 2000

    Hello! Does anybody know what type of fluid i have in my boat? Edit.. saw now that we had a tab forum and now i can't remove this thread. Thanks / Kim
  19. K

    8.1 Horizons Replacing Water Pumps and Manifolds

    Well i started last weekend with my boat, first manifold 3 bolts snapped... other side 3 bolt heads where stripped after that i went home to calm down :-) one beer later and in now looking forward to next weekend challanges. Im now equipped with torches, dremel tools, ect to fight back
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