Has anyone here pulled their fuel injectors? There is a company called RC Fuel Injection that will pressure clean your injectors and provide you with before and after print outs of fuel flow for $25 per injector. My car has 86k miles on it and I'm just guessing a good cleaning might make a difference. (I remember a Top Gear episode....and yes, I like Top Gear...where they cleaned the injectors on some old basic car and it brought its HP from the basement back up to its factory HP.)

This place has a 24 hour turn around too. They replace the o-rings too.

The problem, of course, is that I'd need to know how to pull them. Anyone here ever done it? How hard is it? I'm fairly mechanically inclined and have a pretty good set of tools. What sort of ECU stuff would you have to re-set afterwards and how hard is that?

Or is it worth paying the stealership to do it? I doubt they'd do half as good a job, they'd probably charge 3 times as much and you get no print out.

Any thoughts greatly appreciated.

P.S.: I did do a quick search. Did not find specifics I'm looking for.

P.S.S.: I suck at doing searches.

 

The G35 injectors are pretty well made, so for the amount of work and money involved, I doubt you'll see much benefit to doing this, regardless of what TG did. Unless you have a known issue with your injectors, I'd leave them be.

I replaced the injectors in my old Maxima and it was alot of work, but not all that difficult. The G35 looks to be very similar. You can download a service manual (somewhere on this site) and do it yourself. Basically, you relieve the fuel pressure, remove the upper and lower intake manifolds, and remove the fuel rail and injectors, then reverse. You'll need a torque wrench capable of single digit ft lbs. There are some bolts holding the fuel rail down that are reinstalled in 2 steps, both of which are pretty low torque. Most torque wrenches that will work for your lugs won't go down low enough to also do the fuel rail.

I saved about $700 in labor doing my own work, but I had to do it. Your (potential) work is optional, and I really don't think you'll get that much benefit from it.

EDIT: The dealer probably won't do this kind of service. They'll remove them, but they won't do the pressure cleaning. They'd be responsible for any problems if they did.

 

Top gear is not a factual show, its pure entertainment never take what they do as fact.

 

Its not too bad to get to the injectors. You just need remove the upper and lower plenums - the injectors are right there attached to the fuel rails and plugged into the sides of the intake manifold.

Like was posted above, download the service manual and make sure you have an inch-lbs torque wrench for when you reinstall.

 

Excellent advice guys. Thanks. Will reconsider after looking at service manual. I do not have a torque wrench with that small of increment but I'm not past buying one.

thescreensavers, thanks. I am aware that TG is pure entertainment, but the segment I was watching put an older car on a dyno and measured HP. It was way below spec. Then they cleaned, or maybe replaced the injectors, and the HP came back up near spec. They might have made the whole thing up. And for all I know cleaning fuel injectors might actually be a big money making racket right up there with liquid fuel injector cleaner.