Re: 1970 9.9 no power wot
Another thing if you suspect the coils aren't up to snuff: When the thing is running (in the lake or a barrel), remove one spark plug wire and see if the idle changes. <br /><br />A -If it quits, it probably means there is one plug firing and you removed the good plug wire. <br /><br />B -If it doesn't change it probably means that you have one plug firing and you disconnected the bad one.<br /><br />C - If it changes audibly it probably means you have two plugs firing and by removing one you've cut it back to one.<br /><br />You then reconnect the plug wire and repeat A, B and C with the other plug wire to see if the results are consistent with what you'd expect.<br /><br />If A and B are your situation, you can remove and switch the coils (easy to do) and see if the problem follows the coil. You can also switch the plug wires to see if the problem follows th wires. While you're doing all this, you can examine the coils and wires leading to and from them to make sure nothing looks obviously bad and that connections, grounds, etc. are good.<br /><br />But I'd do both these tests and the spark tester see what you think.<br /><br />By the way, when you remove the plug wires, use an insulated pliers and I also recommend you wear insulated leather or rubber gloves. You might get a good jolt otherwise!
