Re: 1983 johnson 115hpv4 fouled plug/lacking top end power1
Rob, <br />I just went through some similar work on my '93 Johnson 88 spl - fouling plug (#1) and lower top end/intermittant power. Did pack, coils, plugs, plug wires, timing, cleaned carbs and still had my problem. That is until a poster suggested checking/cleaning/changing a small brass fitting called a check valve or fuel recirculating valve ($13) - it looks like a zerk or grease fitting located underneath the carbs on the manifold. There are four of them with tubing coming off and going back to the cylinders . You can unscrew them and check them by spraying carb cleaner into the screened side . If the valve is working you can only spray in one direction - when not functioning two directions so replace the bad one (I had one bad one - going to the #1 cyl , imagine that) . It made all the difference for my engine and many months of frustration and trying to figure out what was wrong.
