Sea Foam for cleaning fuel injectors and rough idle [SOLVED]

Should I take off my fuel injectors and clean them? My car is jerky when stopped. And dies out when I start to drive sometimes. I used Sea Foam once before and driving was a nightmare. It stunk really bad. I was told by a mechanic to dump it in my fuel and my oil. I know how to work on older cars (carburetors) but not fuel injection.

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Jim D.
Jim D.
5 months ago

Thanks for the question, Star. It sounds like you may have a rough idle? Here are a couple articles about rough idle and Sea Foam that may be helpful:

There are a few things that could be happening, but here’s what I’d try: wait until you have a low tank of fuel (1/8 tank or so), and add a full can or two of Sea Foam High Mileage. Then, drive until almost empty before refueling. That will do a great job cleaning fuel injectors and anywhere that comes into contact with fuel. High Mileage is made with 100% safe petroleum cleaning and lubricating ingredients that can’t harm your engine, so you can use it in that concentration without worry. It’s the best way to get the most out of a can of High Mileage.

If that doesn’t clear things up, you’ll know that the problem is likely caused by something else.

On the topic of Sea Foam making things stink, if you used Sea Foam Motor Treatment or Sea Foam Spray straight through the throttle body or carburetor, it will smell “funny”. But Sea Foam added into a fuel tank shouldn’t make any smells. Either way, Sea Foam is made with safe petroleum ingredients, so it won’t harm anything when added to fuel.

You could also do a Sea Foam Spray treatment through the intake. On a gasoline direct injection engine, Sea Foam Spray will clean intake valves (where an additive in the fuel can’t reach since it doesn’t wash over the valves).

Let us know if you have any other questions – happy to help!