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tl dr - To directly answer the question, SeaFoam is a pure petroleum product. If an alternative product is made up the same as Seafoam, then I'd think it would work just fine. If its makeup is not similar, you probably won't see the same results. Below is what you are looking for and a recipe for making your own substitute. I found this answer for a SeaFoam ...


4

Yes, it will probably be necessary to fix the problem in order to pass emissions requirements. The secondary air injection pump on the Beetle is apparently used to accelerate the transition from cold start to hot catalytic converter operation. Without this system, it will take longer for the catalytic converter to reach operating temperature. The ...


4

The injector has a plunger/pintle which is controlled by an electromagnet. The humming you heard is from that. The plunger/pintle has a spring which pushes back against the electromagnet so when the power is shut off, the plunger will close and stop the flow of fuel. This causes the hum. Here is an example of how an injector is built: When the power is ...


2

Just replace the injector plug. I believe it should look like this: You can order it from RockAuto.com for ~$6 (I'm sure you can get it from many other places as well. I would soldier this in place using heat shrink to seal them up. As far as the gaskets go, your vehicle uses the gaskets with the rubber-ish sealing portion (don't know what they are made ...



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