Weel i bought me a 1973 mercruiser 165hp inline 6cyl.this thing has ran one time out at the lake and thats it.it will idle all day but if u give it gas it will die.looks like the carb is loading up also with gas.i see some white smoke out the exhaust also.i have taken the carb off four times and cleaned it.new gaskets needle seat and acc pump.i checked the float does float in cup of water isnt adjusted wrong either.i put new points and cap and plugsin it.i cant see how its loading up if the float is ok needle is seating properly.i set the point gap at 16 but didnt adjust dwell.i figured that should be close enough to run.this thing falls on its face if you give it gas wont run.what the hell?do i put a new carb on it???please help.is the head blown??wouldnt it still rev somewhat??!! THE ONE DAY IT DID RUN IT STARTED GETTING WORSE OFF TAKE OFF.WOULD DIE,IF I FEATHERED THE CRAP OUT OF THE THROTTLE I COULD GET IT GOING AND SHE RAN GREAT.AS SOON AS I CAME TO A STOP THATS IT .GO TO TAKE OFF AGAIN AND YOUR DONE.EVENTUALLY FEATHERING THE GAS DIDNT WORK ANYMORE I IDLED BACK TO THE DOCK AND STARTED REPLACING STUFF.DID I BLOW THE HEAD OUT THERE OR CARB JUST GO.also when it did i pulled a middle plug and air blew out with enginr off!does this confirm blown head or is it hydro locking from exsessive fuel creating this?
