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    new vs. old thunderbolt ignition sensor

    where would the anti siphon valve be located?
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    Trapped air after filter change

    Can there be air trapped in the fuel line going to carb after changing the water separator filter? or would it bleed itself. Do I need to crack open a fitting at the carb to release the air?
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    new vs. old thunderbolt ignition sensor

    1989 5.7 Mercruser
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    new vs. old thunderbolt ignition sensor

    I replaced the sensor in the dist. and now the engine seems to be getting no fuel. Pouring a small amount down the carb will get it to start but then it dies.
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    new vs. old thunderbolt ignition sensor

    Is there anything that would stop fuel flow in the ignition circuit?
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    new vs. old thunderbolt ignition sensor

    The instructions were a joke, a whole page showing how to shrink wrap the connections and nothing to note any upgrade to the wiring. No description describing wire color. Very poor
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    new vs. old thunderbolt ignition sensor

    I recently replaced the sensor on my thunderbolt ignition. The old unit had two terminals, one terminal had two green/white wires and the second terminal had one with one white/red wire. The new unit has one red/white and one green/white both are pig tails with connectors on ends. Where does the...
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    Fuel Filter??

    Is there a fuel pump interlock on this system? Something that prevents fuel flow without a given signal?
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    Fuel Filter??

    So I changed the fuel filter and still had the same problem. So I checked out the distributor. Removed the cap and saw that the sensor had disintegrated. I replace the sensor, however the new one has three wires where the old one only had two threaded stud type connectors. One stud had two...
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    Fuel Filter??

    As it turns out, it is not a fuel issue but a distributor issue. I removed the cap and found the module had disintegrated. Now to figure out how to wire the new module to the existing engine harness.
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    Fuel Filter??

  12. D

    Wiring for ignition module

    My 5.7 Mercruser quit while pulling into the dock. (Lucky Me) In diagnosing the problem the engine will not refine. Putting gas down carburetor has no effect. So I removed the distributor cap and saw that the Module had disintegrated. I purchased a new one only to find out that the old module...
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    Fuel Filter??

    This past weekend my 1989 Mercruser 5.7 would not come up on plane due to only reaching 2200 rpm at WOT. I am thinking fuel filter. Any other suggestions?
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    Need info on plastic tanks in the engine well

    Is there a typical layout of where tanks (water, fuel, waste) are placed under the deck? I have white plastic tanks that I can only guess what they are for.
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    Need info on plastic tanks in the engine well

    I have purchased a 1989 Invader 240 rear cabin. When I open the engine hatch, I see two white plastic tanks, on on the left beside the batteries and one on the right right at the transom. I think the one on the right is for fresh water. The one on the left has two hoses connected to the side of...
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    Electrical question

    Ok, still confused....I have 12.7 volts at the wires the radio was connected to, but the radio does not come on. If I take the radio over to the battery and touch the two wires to pos and neg, it comes on.
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    Electrical question

    My marine radio (vhf) doesnt work. I have tested the incoming connection and I get 12.7 volts. If I take the connections loose and use the two wires coming out of radio and touch them to directly to one of my batteries the radio works. When I hook them up to the incoming (pos & neg) I get...
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    1988 Invader 240 aft berth instrument panel

    I have flipped them and the only thing that comes on is the bilge pump and the windshield wiper.
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    1988 Invader 240 aft berth instrument panel

    I just recently purchased this boat, it seems to be in great shape. However the instrument panel has a vertical row of toggle switches and all the labels are faded beyond being able to read what the switches go to. Is there any help out there?
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    1988 Invader

    I have recently purchased a 1988 invader. The instrument panel to the left of the steering wheel has a vertical row of toggle switches, however the labels to identify these switches is faded and unreadable. Can anyone advise me on where to find out what these switches go to. Better yet can...
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