Its probaby not going to cause anymore problems, the engine is just not going to run correctly. If you need to adjust the injection pump, some special tools are needed, and you need to use what is called the Drip Method, set the engine at 15 degrees before top dead center on #1 and hook up a line to cylinder on fuel line and watch it drip, it should drip once every 15 seconds. There is another way to adjust it, I forget what it is off hand, maybe someone else on the board could help you with that.
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