ever send your injectors out for cleaning?

[tomcat27]

There are a few providers that offer injector cleaning - you send them, they clean them. has anyone had experience with this?

1995 Jeep GC 5.2; I'm pretty sure the injectors are leaking, since 1 am now 1 quart overfilled on oil; I have not verified this yet with a fuel pressure gauge - since I am in the middle of R&R the dash and heater box when I noticed the oil overfill.
it did sit for 2 years, so I am not surprised. regardless, what is the easiest/best way to fix?

1) replace the injectors (most expensive option)
2) clean them on the truck (easiest, but requires expensive OTC, or 3M kit.
3) remove them and send them out for cleaning
4) other?

 

[Nick1994]

I believe Trav on here does it

 

[demarpaint]

^^ He does. OP shoot Trav a PM, he'll tell you exactly what's best to do.

 

[tomcat27]

will do - thanks!

 

[ejes]

Being cheap, I've done it myself relatively easily. There are some good YT videos showing removal procedures for specific engines. It isn't hard and if you're going to remove it, you're halfway home to doing it yourself anyway IMO. I had success with the videos that showed using a 9v battery to flush and backflush the old injectors with some Berryman's B12 and some hose and a syringe. Some will undoubtedly have some better ideas or try to worry you somehow about doing it this way, but its worked fine for me several times. Just bought a new o-ring kit from the parts store for about 20 bucks. The Lisle 37000 Air Conditioning/Fuel Line Disconnect Tool Set is helpful too: also 20 bucks. Cheapest way to do it IMO. You'll find out real quick if you have one that isn't working right. Last one I did was on a 1997 GM 3800 with over 100,000. I was there changing out the LIM gaskets anyway and just did it while I had it all off. Found everything was working and the rail was clean, but the o-rings were getting hard, so it was good to do it anyway.

 

[mk378]

Inspect the spark plugs. If you have a leaky injector, the business end of that plug is going to look different. Then you've isolated it down to just one injector instead of all 8.

 

[daman]

Last year trav set me up with a set(8)for my Big block chev (plow truck in the middle of a busy snow season) very pleased with his service highly recommended by me, he went above and beyond to help me out and get me back going ASAP!

if I ever need more injector work done he's the only one that will touch my stuff!!

 

[Rylan]

Nothing recently, but I've done a set of Honda/Acura (Keihin) injectors in the past by RCEngineering.com. They clean and balance and can even give you a print out for CC flow and % variation. Downside is that it took 2 months to get back to me (I didn't want to pay extra to expedite them).

 

[Blinker]

Im interested in this too. Anybody recommend a specific shop?

 

[daman]

Originally Posted By: stower17
Im interested in this too. Anybody recommend a specific shop?

lol see my post above!, send PM

 

[Chris142]

Injectors seem to be very long lasting. Every car here has over 150k on it and still running the original injectors. I can remember 1 bad one in my 30 or so years of auto repair

 

[daman]

It's the spray pattern and fuel optimization and sealing(drips)that slowly deteriorate over time that one don't notice.

 

[AKhan87]

I have had RC Engineering clean about 4 sets of fuel injectors for me.

AUS Fuel Injector Re-Manufacturing through AAP, 3 sets.

Trav, cleaned 4 sets of fuel injectors for me, 2 injectors were supposedly already cleaned by AUS from AAP, long story short, they were the same flow rating as other used the fuel injectors, which were never cleaned before. After Trav was done, he had balanced them all. I would highly recommend you have Trav clean them up, because he will ACTUALLY clean them, instead of claiming it.

 

[Silk]

I had an off car fuel injector cleaner in my shop - in the 11 years I was cleaning injectors I could count on the fingers of one hand the number of faulty ones I saw....and there was usually a reason they were faulty. Most cars will run forever on their injectors without being touched.

 

[cptbarkey]

unless they are expensive (diesel) and worth rebuilding because of that expense they are disposable in my opinion. i've tried to sell 8 known good used injectors on ebay and no sale in almost 2 years.

 

[eljefino]

I had a bad injector on an Olds Silhouette 3.4 I got cheap. It never stopped dripping and I had a blinking CEL from the flooding out. Got another on ebay for $10 and lived happily ever after.

 

[andyd]

I replaced a set with a used set on the 528e. 40$ and butt dyno says it was worth it. The pintles crack and the O-rings get brittle and leak.I was raised on carbs, EFI is way better. Mostly because it doesn't need fixing.

 

[artificialist]

I have heard that with some Jeep 4.0L engines, you can swap multi-hole injectors from a different vehicle and get a performance gain because of improved atomization. I'm not sure about what car has the multi-hole injector that fits.

 

[Trav]

Yes there is a newer style injector that fits the old 4.0 with EV 1 connector.

 

[eljefino]

Originally Posted By: artificialist
I have heard that with some Jeep 4.0L engines, you can swap multi-hole injectors from a different vehicle and get a performance gain because of improved atomization. I'm not sure about what car has the multi-hole injector that fits.


I understand Neon injectors fit.