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    1999 150 johnson fuel primer valve position

    There is a fuel primer valve and it can be rotated about 180 degrees. What position should it be in for normal operation it is located at VRO?
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    1999 150 johnson lots of smoke

    1999 Johnson 150 with more hours than I can count. Runs great starts great but smokes a lot on start up and really doesn't clear unless you run at 3,500RPM or higher Smoke is getting bad not much fun to idle around. I did replace the automatic oiling system and it does work. Is this engine...
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    Trim and Tilt Oil for 1999 Johnson 150

    What oil or fluid is everyone using In their tilt and trim units. Gal at Johnson dealer said ATF. But when i took motor off the fluid that spilled is not red?? For 1999 150 Johnson. Thanks
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    Difference between 3.0litre engines

    Does anyone know the difference between the 3.0l engines as far as what is interchangable. 225 carb vs EFI 225 VS 250 etc Thanks for your reply.
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    10 wire ignition switch scource?

    I have a 10 wire ignition switch and one wire is broken. Has anyone repaired one or found a scource? Thanks in advance.
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    General question concept of bleed hoses what function do they perform exactly?

    Trying to understand the reason these guys are hanging all over the engine. What are the bleed hoses used for. Wonder how they came into being. Thanks gary
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    250hp EFI miss at idle blowing bleed hose off. 1999 model year.

    Will start and run, and run fine at higher RPM's. When it is slowing down from higher RPM and drops into idle mode it starts sneezing. And if left long enough it will sneeze a bleed hose off, seems to be the same hose. Not sure where to begin to attack this particular problem. Thanks in advance.
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    steering will not turn left on Port Engine 1999 250hp efi

    Sea star steering dual cylinders single helm. Stb seems to be working fine port will go right but not back to the left. If we try to physically turn it to the left it will only turn a little ways and then stop. bled system as best we could with this condition. are there check valves in the...
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    Trim issues twin 250hp EFI 1999

    Stb trim works at transom, Port does not. Neither work at helm. Both fuses checked good, both relays checked good. thanks in advance.
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    250HP EFI 1999 rusted mount bolts

    Anyone know of a trick to get the rusted motor mount bots out all 4 are shot need to be replaced. 1999 250hp EFI. Thanks in advance.
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    Just bought (2) 250hp EFI 2000 can't find serial numbers project new to mercury o/b's

    Guy told me they were 225hp got their and they are 250hp. Brand new to Mercury first ones I've owned. Have a lot of engine rebuilding experience. Have not been able to find serial numbers on either engine. The engine has a mini alternator on top being spun by a belt. Appears to be around a...
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    serial numbers

    Looking at buying a boat can't find serial numbers of engines? 225 merc EFI. I know where to look just not seeing them, is this common? Thanks in advance motors are supposed to be 1999 models have blue stripe
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    150 Johnson 1988 Good Engines?

    Looking at buying a boat with twin 150 Johnson's owner says that both powerheads changed 3 years ago . Hasn't been run in 2 years and he says will turn over but not start do have good compression. Is it worth it to renew/rebuild or what. Thanks
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