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  1. Bt Doctur

    I need Help finding the Correct Impeller for my Inboard 350

    found this by putting your part number in the search engines listed as $740 check your messages impeller listed as sierra 18-3309
  2. Bt Doctur

    Trim Ram End Cap Replacement

    The end cap need to be removed to service the rams O rings As long as you can unscrew the end cap .Yes. take that assembly to the vise When you remove the bolt to remove the check valves, DO NOT OPEN IT ,THERE ARE BALLS AND SPRINGS HELD CAPTIVE. Failure to reassemble correctly will result in no...
  3. Bt Doctur

    1998 Larson SEI 186 tilt motor isn't working

    a 90A or 110A main fuse.A square white block A 10 or 15 inline that controls the relays Both are at the pump
  4. Bt Doctur

    Winterize

    We used it about 5 hours and then it overheated. If there was a plug missing or a hose off you would have seen the temp going up well before an overheat,or hear the alarm at 200 deg not after 5 hours. Plus your bilge pump would be running continusly. Now on land ,on muffs you hear water, stick...
  5. Bt Doctur

    87 Mercruiser 205 V6 losing power past half throttle

    the spin on filter should be first, then fuel pump filter, then carb inlet filter
  6. Bt Doctur

    Ignition timing 5.7 gs 3869058

    May just be point and shoot. Usually about 8 BTDC
  7. Bt Doctur

    Fuel pump line removal

    need a wider pic, no known pump looks like that. Most fuel lines are 3/8ths inverted flare
  8. Bt Doctur

    Fuel pump line removal

    its a volvo, 3 bolts removed and 1 broken?
  9. Bt Doctur

    Mercruiser Manual has a error in torque V6 Vortec

    SM 25 lists the intake bolt torque as 35 Ft Lbs ,that is incorrect .Should be around 12-13 max.
  10. Bt Doctur

    Winterize

    One other thing that happens is it starts smoking soon after it starts. It don’t even get up to temperature. Winterizing fogger just burning off at the initial start
  11. Bt Doctur

    all motor no prop

    Check drive oil and level,low/no oil destroys the upper gears. shift into full fwd, put the prop on. have someone watch the shaft inside the boat at the rear of the motor while you stand on a plade and turn the prop. Prop moves, shaft doesn`t= upper gears or lower drive shaft prop moves, shaft...
  12. Bt Doctur

    Mercruiser - GM Inline 6 (165hp) starter?

    or the water at rest is a 1/2 inch but once you try to plane it runs rearward. it may be getting to the flywheel and then the starter or water from the top of engine enclosure or a rodholder
  13. Bt Doctur

    Pic of Milkshake spew all over my engine. Help please

    We just summarized our boat and launched. New oil, filters, water separator, etc. Was running rough after a few minutes. Sounds like a winterizing failure .and those batwings are prone to failure also
  14. Bt Doctur

    impeller in need

    I`ll try to explain it When you installed the lower did the shaft socket connect with the splined lower shaft? Did you place the lower unit if fwd gear ? Rotate the lower splined shaft untill the prop is locked in a CCW direction, this is fwd gear. If you go past that point continue to rotate...
  15. Bt Doctur

    Worth flame arrestor upgrade for Mercruiser engines?

    a metal one will also works just as well, try ebay https://www.ebay.com/itm/185462659926?epid=11017011131&hash=item2b2e6f9b56:g:t-kAAOSwq-1ipomS
  16. Bt Doctur

    Boat switch panel and mystery button

    If the motor now runs, remove 1 wire and see if it still runs. If No ,its a man overboard safety switch that has a red lanyard on it. Usually uses a purple ign feed wire
  17. Bt Doctur

    correct plugs and wires for points type distributor on 140 engine

    unless the coil is rated for the full 12v and does not say on its side "use ballast resistor" it used full 12v because the coil is internally ballasted
  18. Bt Doctur

    Timing chain & camshaft replace

    Yes, oil pan should be lowered instead of cutting the gasket,especially if a one piece neoprene type ,you need 3 feet in front to do the cam Intake manifold off, valve covers off, loosen and remove push rods, pull lifters out , timing chain and cam gear.
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