Anyone ever diy this? If so what solvents did you use. Or was it ultrasonic cleaning? My new TBI engine has a spray pattern for shit. Rock Auto has reman injectors at 25 each which is tempting but figured I would ask. Or is there a local guy?
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For $25 just get the reman, which really are just cleaned, ohm checked, new inlet screens, then spray tested, but sending yours out to be cleaned will cost as much or more than the RA ones.
How are you checking pattern while it's spraying? Only way I've found is with a strobe light to 'freeze' it.
As far as cleaning you'd need to fab up a self contained fuel cell with an adjustable pressure regulator and pump on it as the real cleaners aren't compatible with stuff in the fuel tank. GM X66 is one of the better readily available cleaners, on Amazon in the pint size under X66P. I've used it for induction cleaning (suck it like seafoam) and piston soaking on my Mazda. It works very well in that role, I imagine as an injector cleaning solution it also works well. I believe they say to use a 10% solution.
By the time you build your own rig or pay a shop to do it, you'll have spent more than the $65 or so those reman will cost you with shipping. Just mind the injector connector wiring, it gets pretty crispy on those things being bathed in fuel vapor for decades at a time. Those engines are sensitive to fuel pressure so make sure that's right on and lazy EGR problems were pretty common too, the valves like to not totally close.
Saw someone clean injectors with a 9volt battery and a can of carb and choke cleaner with the sprayer ripped off. Might work on the cheap.