all my life I have been using "majic" cleaers for all sorts of things.
Sometimes they work, sometimes they don't. Some only work when you heat them, scrub with them, let them sit, let them flow, renew them frequently, use more than recommended, etc...etc...
So how do you know what works and what doesn't?
All I know is that many injectors go thousands of hours without needing cleaning... much of the time they become fouled but cant be cleared through cleaning or become worn/inop for other reasons than just being "dirty".
So what do you do? Even my highly respected friends use some lopsided logic in my mind...so taking their advice to me just doesn't cut it all the time. More research is the only solution.
Ultimately one rolls the dice on what might help and doesn't have any negatives...maybe it doesn't work as advertised...but it shouldn't do any harm.
If there were products out there that worked great, 100% of the time....I would bet many of us would have already heard of them and been convinced.
So far...haven't heard of any.
Even the last time I cleaned my outboard carburetor...it took both a majic cleaner and 3 times through an ultrasonic cleaning tank to resolve the issue.
If anyone thinks spraying something into a motor or running something through the fuel will do the same 100%, 100 percent of the time cleaning...well my boat has had some great work and improvements on it...it's yours for a cool, but cheap $1 million.