Injector Cleaning Services?

"Wrong Wheel Drive (41%)" (rduncan5678)
08/13/2019 at 20:35 • Filed to: None

I just pulled the fuel injectors out of my old Miata (yay parts car) so that they can be sent off for cleaning/rebuilding and then installed into my other Miata when convenient. Hopefully that can solve my misfire code once and for all and perhaps even improve my fuel economy. Pretty sure the injectors worked fine on the old car but with 210k miles on them, it can’t hurt to have them cleaned to be sure. I will be changing the fuel pump and fuel filter at the same time (already have the parts on hand) so the car will have a fully revamped fuel system after that. Then I can also finally install my roadstersport midpipe for that little bit of extra noise and single digit horsepower gain (been waiting because didnt want to risk frying the cat with a misfire).

Most recent photo I have of the Miata. With a nice doppleganger in the background. That car had 200,000 fewer miles on it lol. Side note “CSM” or “California Street Modified” seemed like a silly class since it was only me and an FRS who had no idea what the class even was and was running on all seasons at a good 10 seconds slower than me. Will just do regular CSP next time since all of the street prepared classes were grouped together and I would have beat everybody running that combined class at the event based on raw time.

So Oppo, has anyone used Injector cleaning services before and have suggestions? I have found WitchHunter Performance, Dr. Injector, and Injectorrx which all seem to offer about the same service for somewhere around $20 per injector plus shipping both ways. A little bit more expensive than buying remanufactured injectors but far cheaper than buying new ones (somewhere around 3-4x the price on rockauto). I found it interesting that there are vendors directly on rockauto which offer the same service but that seemed a bit pricier at around $30 per injector but includes shipping in that cost. Flat rate USPS box should be like $10 though and fit all four no problem.

DISCUSSION (12)

mXxxxXm24 /O/ /O/ > Wrong Wheel Drive (41%)
08/13/2019 at 20:42

Wierd that I just checked Oppo for the first time today to see this. I would check with local shops to see if there is a service nearby you. F uel injection clinic is the place treasure coast used for the one’s they sent me. I guess they are fine lol.

HammerheadFistpunch > Wrong Wheel Drive (41%)
08/13/2019 at 20:44

I sent mine to RC fuel injector co. They were well rebuilt, and included printouts to show flow and balance.

Wrong Wheel Drive (41%) > HammerheadFistpunch
08/13/2019 at 20:45

Oh sweet, they are in Torrance so that is relatively local as well! I will definitely look into that.

HammerheadFistpunch > Wrong Wheel Drive (41%)
08/13/2019 at 20:50

Yeah, they came recommended by my uncle who works for Toyota out there.

dogisbadob > Wrong Wheel Drive (41%)
08/13/2019 at 20:51

I heard good things about Hurst Injector Service

But I usually buy brand new ones. You can usually get new OEM injectors if the car is reasonably common and not too old

Wrong Wheel Drive (41%) > dogisbadob
08/13/2019 at 20:56

New OEM injectors run about $100 a piece or more which seems like a waste when properly cleaned and tested ones are the same thing. They arent exactly wear parts generally, but the testing is important to prove if replacement is necessary.

I only have one that is throwing a code but since I dont have to take the car off the road to wait on the parts to get cleaned, Id rather do all of them.

dogisbadob > Wrong Wheel Drive (41%)
08/13/2019 at 21:10

gettingoldercarguy > Wrong Wheel Drive (41%)
08/13/2019 at 21:12

I used to use marren decades ago when I used to race rx7s.

Clown Shoe Pilot > Wrong Wheel Drive (41%)
08/13/2019 at 21:20

I’ve used WitchHunter several times on LeMons builds. They’re quick and the injectors looked and worked great upon their return.

TheD0k_2many toys 2little time > Wrong Wheel Drive (41%)
08/13/2019 at 21:49

Local performance shop probably has a machine that will do it. Its super easy to do and relatively cheap to just drop em off.

His Stigness > Wrong Wheel Drive (41%)
08/13/2019 at 23:26

If you're still dealing with a miss-fire then I think it's time to check compression. That's relatively easy on that engine, right? I have a fancy digital gauge you can use.

Urambo Tauro > Wrong Wheel Drive (41%)
08/14/2019 at 00:33

I haven’t sent injectors in for this sort of thing before, but I’ve done sort of a DIY version on my brother’s Saab , and would do the same to my own car in a heart beat if I suspected a clogged or stuck-open injector.

Kinja'd!!!

Granted, this method doesn’t i nclude any fancy flow rate testing or balancing, but it’ll at least help flush out some crap and verify a decent spray pattern. All it takes is some carb cleaner, straw/hose adapters, some jumper wires, and a 12V power source (I used a jump box).