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  1. R

    1976 888 Fuel Questions

    my MCM470 year 1978 .. the gasoline 90-93 octane 10% alcohol ... the marine additive one oz. 10 gallon gasoline ... the marvel mystery oil one oz. 10 gals .....the carb is very good and the gasoline tank ....no mess !!!! the winter boat tank gasoline draining it .... then the truck gasoline...
  2. R

    Carb issue.

    the fuel tank of the water ... so the fuel tank is the water inspected . vented it !
  3. R

    Hard plane after switch from points ignition

    The 650-800 rpm engine 1985 the timing 4-8 BTDC ....now the rpm 1500rpm timing ? ... my engine oil 30wt and the zinc plus 4-6 OZ ...the gasoline 90-93 octane , the timing 4 BTDC .. my 1978 MCM470 is a very great engine ! gasoline 93 octane ...the 40 years
  4. R

    Mercruiser 3.0 stalls at 1000-1500 rpm.

    the carb and the gas filter cleaning carb and the new filter . the gasoline tank is the dirty ? my marvel mystery oil and the marine gas stabilizer treatment very good gas carb and the gas tank decades !
  5. R

    Which engine oil can I add?

    the MCM470 1978 engine oil 40w .. also the zinc 4-6 oz.
  6. R

    Hard plane after switch from points ignition

    so the 3.8L engine 1985 or 1985 4.3L engine ? so 1985 ignition 4- 8 BTDC timing 650-750 RPM ...
  7. R

    Mercruser 470/ 170 compatible parts

    was the engine Mercrusier ?
  8. R

    1976 888 Fuel Questions

    the new muffs two water hoses left/right outdrive .....the 140F of the engine ... damaged it of that one muff hose , damaged it ....175F engine water hotter ...
  9. R

    1981 120 Mercruiser idles rough when hot

    yes that ignition coil very hot off the resistor damaged it ... new ignition coil ..
  10. R

    1971 3.0 Liter Carb Question..

    THE 700 RPM IDLE AND THE TIMING 6 DEGS ... ALSO THE DWELL 31-34 ... THE IGNITION POINTS INSPECTED IT ..
  11. R

    Stern Drive transom lower right bolt fell out

    the wooden rotten of the engine studs ... the wooded is cleaned it out rotten .. then the fiberglass ..
  12. R

    Mercruser 470/ 170 compatible parts

    https://www.amazon.com/dp/B0177KD04S/ref=sspa_dk_rhf_search_pt_sub_7/?_encoding=UTF8&ie=UTF8&psc=1&sp_csd=d2lkZ2V0TmFtZT1zcF9yaGZfc2VhcmNoX3BlcnNvbmFsaXplZA%3D%3D&pd_rd_w=tjBUj&pf_rd_p=74b85f4a-bfbe-49a3-8252-7e9927a19318&pf_rd_r=RNK72149SPNHXTT4RKEV&pd_rd_wg=M3P3x&pd_rd_r=7149ea37-0043-429a-9f5d...
  13. R

    1976 888 Fuel Questions

    THE BOAT GAS TANK FLUSHING IT OUT ...THEN THE NEW 93 OCTANE GASOLINE ....gas tank MMO 2oz. 10 gallons around 2000 year alcohol 3-6 months tank .... the gasoline is a mess MUCKY... also the carb in the take it off clean it MMO oil ......
  14. R

    4.3LX & Weber Carb Service

    the carbs 6-8 psi gasoline ..
  15. R

    Correct spark plugs for an 888

    THE Mercrusier 888 manual 1976 serial #4529031 spark plug AC- MR43-T .... THE PERTRONIX VOLTAGE 20K VOLTS ... MY 470MCM MERCRUISER 1978 ENGINE IS PERTRONIX . BOAT 38 YEARS 1986 TODAYS 2024 .. THE GASOLINE IS NO GAS TANK IN THE OCTOBER .. THE CARB IS NO CORROSION ... DECADES ! DID THE GASOLINE...
  16. R

    Correct spark plugs for an 888

    THE MANUAL IS MY HOUSE .1979 MERCRUISER MANUAL .
  17. R

    Correct spark plugs for an 888

    ENGINE 888 PLUG .030 , 93 OCTANE GASOLINE , TIMING 10 DEG ....DECADES NOW THE 5 DEG ...DEWELL POINT 26-31 DEGREE ..ENGINE OIL 6 QTS .. 4K RPM MAX ..ENGINE OIL 25-40 WT ... PERTRONIX OF THE ENGINE THE TIMING INSPECT IT !!!! 700-750 RPM IDLE ....
  18. R

    Correct spark plugs for an 888

    so the Mercrusier 888 manual 1976 serial #4529031 spark plug AC- MR43-T https://www.myinboardmarine.com/collections/winterization-maintenance/products/spark-plug-oem-acd-mr43-t?_pos=2&_sid=0b689902a&_ss=r
  19. R

    First startup for the season and then died

    the fuel tank draining it of the bottle the engine hose ..watering it ..
  20. R

    First startup for the season and then died

    gasoline ... fuel filter also the water tank ..
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