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  1. K

    Compression test results 4.3L V6 2005 what do You think?

    Yes engine was warmed up @ fast idle in marina, WOT during this test. Ok probably next week after winterization I will remove the exhausts and let You know. Any advice when removing exhaust manifolds ??
  2. K

    Compression test results 4.3L V6 2005 what do You think?

    I really like work on my boat, im still learning but its fun, also im from Europe and its VERY VERY difficult for a good mechanic in my area... Do You think its rust? For me its just more bright brown colour only (??) doesnt look like rust. I did use Power Tune from Quicksilver and sprayed into...
  3. K

    Compression test results 4.3L V6 2005 what do You think?

    Will do, any ideas Why only this one cylinder is weaker? I don’t know the weak points this V6 blocks but would like to know
  4. K

    Compression test results 4.3L V6 2005 what do You think?

    Yes the boat doesn’t smoke
  5. K

    Compression test results 4.3L V6 2005 what do You think?

    Yes I’m idling for 5-10 minutes because of marinas no wake zone, my boat is sitting in the water for the summer. Also I was warming up the engine on fast idle before this test. Nevertheless I’m bit confused because “starboard side looks more rich to me than the port side..(?)
  6. K

    Compression test results 4.3L V6 2005 what do You think?

    Do you think this running rich is because of carb? Not choke ? Idle screw set according to manual and @achris suggestion’s
  7. K

    Compression test results 4.3L V6 2005 what do You think?

    its 2bbl Mercarb, new brass float, new needle and seat, float set to the level point,
  8. K

    Compression test results 4.3L V6 2005 what do You think?

    Ok so what do You recommend? Choke is opening now all the way when warm, it was set too rich and engine was doin a lot of black smoke and rough idle when cold, ive leaned the choke and its fine so far, smooth idle and no black smoke when cold. I did also carb rebuilt before this summer season...
  9. K

    Compression test results 4.3L V6 2005 what do You think?

    plug on #5 is more orange/brownish than the rest, why? also on #6 ive noticed that thread was little oily. My choke was set too richy maybe thats why, ive leaned it a little now as You probably remember from my previous posts
  10. K

    Compression test results 4.3L V6 2005 what do You think?

    How about #5? I dont have gauges for leakdown test yet, do You have any tip to set certain cylinder to TDC for that leakdown test? Take care,
  11. K

    Compression test results 4.3L V6 2005 what do You think?

    Gauge is a new one, with schrader valve. Not chinese crap
  12. K

    Compression test results 4.3L V6 2005 what do You think?

    Hello, the summer season is over and Ive decided to do a compression test on my engine. Here are the results, what do you think? Warm engine, WOT, DRY TEST: #6 - 170 psi #5 - 145-148 psi #4 - 175 psi #3 - 175 psi #2 - 178 psi #1 - 170 psi I did WET test on #5 (added 5ml - tea...
  13. K

    Grounding coil for compression test

    It’s TB V ignition , but just grounding the wire from coil to cap won’t shorten it out?.. so to be sure. Ground this wire ??
  14. K

    Grounding coil for compression test

    Yes I mean the wire from coil to the cap
  15. K

    Grounding coil for compression test

    Hello folks Simple question, I’ve read in service bulletin that for compression test I have to remove middle plug from coil and ground it to the block, right?? But doesn’t it just short out the coil? Or maybe remove positive terminal from coil
  16. K

    winterizing merc?

    It doesnt work already , i have only list with part numbers
  17. K

    winterizing merc?

    Chris, manual says to screw back in to prevent rust.. however I would like to leave my plugs off , Did it once and it worked but im afraid of rusting (?)
  18. K

    gear oil drain plug alternative to slotted screw driver?

    Get Biiig flat screw driver for that
  19. K

    Antifreeze circulation through engine

    Marvel Mistery Oil
  20. K

    4.3 V6 valve steam seals replacement

    Ok maybe im overthinking as always... anyway, can You confirm this Valve gasket is correct for my engine? https://www.summitracing.com/parts/fel-17921 its not available... this look also similar but its cheaper a little https://www.summitracing.com/parts/fel-vs50464r
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