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    Pulse ports on Johnson GT150 1984

    Hello Racerone. I trust you are doing fine. I managed to find a new compression tester today and did the compression test as you recommended. Cylinders 1,3,4 and 6 -- 72 PSI Cylinders 2 and 5 -- 71 PSI Spoke to the previous owner of the boat regarding the electrical fuel pump and he said...
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    Pulse ports on Johnson GT150 1984

    Good day. the original part numbers are 039649 (Upper pump) and 0394716 (lower pump). these are actually obsolete and the dealer gave me 0438558 (upper pump) and 0438559 (lower pump). Sorry these pumps are actually close. The gasket that came with it has a hole in the middle, but i do not see...
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    Pulse ports on Johnson GT150 1984

    Good morning. I wish all a happy and prosperous new year. Racerone thank you for the valuable information. I will follow your advice thank you. Another question, at the rear of the fuel pumps there are two ports that also work together with the vacuum pipe at the bottom to assist in...
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    Pulse ports on Johnson GT150 1984

    Hello racerone. Thank you very much for reply. I do not see any plugs, but only two nipples joined with a pipe. Please see attached photo, are these the pulse take off points? Can you also tell whether or not flash arresters are needed to connect the double fuel pumps to the pulse ports.
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    Pulse ports on Johnson GT150 1984

    Good day to all out there. I recently bought a bowrider with a Johnson GT150 of which the previous owner removed the VRO pump. As the pump was removed and an electric fuel pump installed after the fuel bulb from the tank, I don't feel comfortable operating the boat like this. I want to go to...
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