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  1. R

    repost on mystery shut off

    hi guys,i will skip alot of all the tests i ran on my 1987 sea ray 350,a-1.my issue as of today is no fire at the spark plugs which points to a bad coil.this will the second coil to go out.im using a marine hei with the coil inside the cap.now the question what could cause this.i also am running...
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    mystery shut off

    hi guys,i have posted in the past on a issue that still persists. i have a 1987 350 a-1,all rebuilt with 80 hours on motor on the hose.the motor runs good for a while ,and will stop running as if i turned off the key switch.what can cause this.i am constantly trouble shooting this.as of today it...
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    mech.fuel pump

    hi guys, i posted a few days ago about a mech fuel pump not pumping.i have since talked to the supplier,and they tell me the pump has to be primed on the 1st start.how do you prime a mech pump.i have never done this in the past.all new lines,all new every thing on this 350 alpha 1.the old pump...
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    mechanical fuel pump

    hi guys, i recently replaced my fuel pump now this new pump is not pumping fuel.on the install i noticed the push rod landed high up in the housing.what is the correct way to do this.should the cam lobe be at a low position before install.it seems like the push rod should be lower close to the...
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    carb fit

    guys,i am considering swaping my carb from a roch 4 bbl quad jet to a edelbrock 1409.now i know i have to use an adapter plate with the edelbrock sqare bore to spread bore.i am wondering if this is an acceptable way to go using the adapter plate.this saves a lot of dollars compared to buying and...
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    350 no start

    hi guys i tried to start my 1987 350 a-1 today with no luck.the starter spins the motor real good.i got a backfire through the carb one time with no start. the boat has sat awhile and back in the summer we installed a hei distributor and it ran good.i have fresh gas,strong 12 volts. thanks in...
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    surging

    guys i have a 1993 2.5 200 black max carb.i am geting a surge at idle and under way.it is more noticeable under way.i have adjusted the carbs to specs.any idea where to go next.i just wonder if the fuel pump is the cause.how do i test a fuel pump. thanks in advance.
  8. R

    voltage

    hi guys i have 1993 twinn merc 2.5 200 hp black max offshore outboards.they are awsome running with 129 psi compression average.i have installed new gauges,new plug wires,new plugs,carbs cleaned ect.i recently noticed that both volt gauges when at idle peg out to 16.once im on plane they return...
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    poppet valve

    guys does water have to flow through the poppet valve.what is the purpose once water leaves the top of block.could i take the hose off at the valve and let it exit through the cowling. i have good strong flow coming out of top of block.it seems like i have seen this on race motors.i have an on...
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    overheat alarm

    guys i have a 1993 2.5 200 hp merc black .i replaced waterpump,new thermostat ,new temp sender,still the over heat alarm sounds off.temp gauge is new and says 160 to 183. i tried 170 temp stick and it wont melt.what to do next.the alarm does not come on all the time just enough to...
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    gauges

    guys i have a pair of 1993 mercs 2.5 200hp blackmaxs that i recently purchased.all gauges are new.all work except the temps and psi.all the wireing is a big ball of a mess.i installed new thermostats,and temp senders,all gauges were put in one at a time so as not misplace wires.i have 12 volts...
  12. R

    30 amp circuit breaker

    guys do these circuit breakers stick at times or just quit.i have to keep resetting mine.1987 350 300 hp alpha 1.is there a test for this.thanks.
  13. R

    no reverse

    guys i have a 1987 alpha-1.i can hear it trying to go into reverse but no go.forward is good.the shift cable is new.the cable at the shift controll module is centered up as it should be.it seems that i have no more adjustment left at the controll mod.the controll module is also new.would there...
  14. R

    compression results

    guys i recently did a compression test after a hydrolock.here are results of dry test.#1-150 #3-120 #5-159 #7-165.#2-205 #4-185 #6-198 #8-198.this is a 350,.030 flat tops,carb,300 h.p.approx.the motor spins over good with no unusual noise as the motor was fogged right away.it seems to me that...
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    stainless exaust system

    ok guys i would like some input on stanless systems.i have narrowed my search down to 2- hytek marine or stainless marine.can any one recomend and is there any big differance.thanks in advance.
  16. R

    fix for water reversion

    guys,does any one have a known fix for water reversion.i recently rebuilt my 1987 350 alpha-1.before rebuild i never had a problem.at 46 hours i had hydrolock.i insalled all new parts on the motor.the motor is now 30 over with stock cam .400 lift.carb-4bbl,machinest says 300 h.p. which was the...
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    thermostat temp

    guys,at what temp should a 142-thermostat open when looking at the temp gauge. i noticed mine opens at 190-195. this is a new 142* sierra.after opening it comes down to 160-165. this seems awful hot to me.all parts on the motor are new.1987 350,a-1, thanks.
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    how to vacume test

    guys how can i do a vacume test with no intake fitting,no vacume advance on dist,4-bbl quad.all i have is the 2- breather hoses that route to the carb from valve covers.this is a 1987 350 newly rebuilt,300 h.p. a vacume test can tell one alot about motor performance.thanks.
  19. R

    timing issue

    guys i need some instructions on how to reset the timing on my 1987 350 a-1.the motor is not stock.has been rebuilt with -bored 30 over,flat tops,stock crank polished,stock heads shaved .010, cam is stock with a 400 lift.i upgraded to a marine gm hei dist.the hei is tuned with correct springs...
  20. R

    12 volt problem

    guys, i posted earlier with a shift switch issue which now works fine.new issue now.on the hose in drive way the motor idles rough,and when i hold the throttle steady at 1200 rpm i can feel the motor starting to bog down,and the rpms will start to race up to 2000 rpm at which time i pull back on...
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