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  1. R

    Trim pump brass fittings too big

    I would look up the s/steel fittings not the brass to the aluminum .. corrosion ..
  2. R

    Is My Impeller Bad? Mercruiser 228

    I had my suncrusier eng and I fixed the heat exchanger ..flushed out that water and did antifreeze 75% and 25% distilled water ...the caps removed and I did the 2 tubes leaks , using the silver solder ... then I inspect the zinc drain plug port sea water .. then I take the sea water plug out...
  3. R

    Mercruiser ECM replacement?

    replaced the gas reg and the pressure is correct and the needle is stable ... now run it the water and test the gasoline pressure !
  4. R

    MCM 470 Starter Shot? Replacement options?

    the starter motor takes it out then use the battery is rotating ... then the engine uses the person cranks it rotation ... do not put in the starter motor ... then open up the starter motor brushes .... probably the brushes are the brush holders rusted a bit .. also clean the armature...
  5. R

    Gear ratio in lower ?

    your engine is a V8 5.7L ? gear ratio is 1.5 .. mercruiser chart spec's ,,,,
  6. R

    470 trim pump leak

    the trim pump creates a higher pressure ...remove the trim cylinders on the outdrive .. then lift up the out drive is a very good movement or trim cylinders are looking the in/out buttons moving the pistons .. then remove the oil,,,, tank see if its dirty ..many have to change the oil or...
  7. R

    Is My Impeller Bad? Mercruiser 228

    the picture is a breakdown of the impeller ...then inspect the outdrive and change the impeller ,,, parts are worn ... I have a 1978 wellcraft suncrusier bought it in 1986 still running it today .
  8. R

    Ethanol treatment

    STA-BIL 360 Marine Ethanol Fuel Treatment I did it over 20 years .. then I suck it out in the fall ..then put in my truck ... I also put marvel mystery oil that the corrosion is no issue .. MMO I put my vehicles old vehicles in The gas tank 2 OZ .. 20-25 gals tank..
  9. R

    Priming fuel system for new engine first start.

    I cranked the engine 5 sec ... then I put one ounce in the carb. also put the water container filter the gasoline .. then crank it 5 sec .. then 2 -3 min then crank again ... crank the throttle then crank again .. you cranked over 15 seconds then a lot of cranking .. hot as hell ..
  10. R

    Engine to Outdrive Alignment Tool

    inspect the 2nd time using the boat season an alignment tool .. then also inspect the bellows and U joint and clean the bellows ..
  11. R

    Engine to Outdrive Alignment Tool

    the Marine Engine Alignment Tool is very tight .... then you have to adjust the motor mounts . when you also use that tool use the boat season then inspect the alignment .. tool is a very long tool . $60-120 ... drive spline is not tight ...does not create the alignment .
  12. R

    Mercruiser 470 Starter

    https://www.marineengine.com/parts/mercruiser-sterndrive-parts/470-mie-mercury-224-il4-19801981/5520115-thru-6218036/starter-motor-assembly-complete ... the previous owner changed the wrong starter motor ? ok ....
  13. R

    Mercruiser 470 Starter

    THE 470 engine starter has a total shield .then the engine cranks and does not start the engine , then the starter has a brake to not rotate in the wrong rotation . when the engine starts the starter drops the brake rotation .. bushings / motor commutator brushes ....fix it ..
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