Jeebalow

iTrader: (3)

TL;DR Injectors clogged. Buy new set flow matched 38lb for $300 or have 8.1l truck injectors (31lb) cleaned for $200?

Long story:
I am wrapping up a drivetrain swap into my 95 ECSB. It's a 5.3 with 243 heads, 215/223 cam, NNBS intake, DBC TB for intake, LTs, 8.1L truck injectors, rebuilt t56, and 14B SF, trutrac, 4.88, Driveshaft specialties driveshaft.

I attempted to start the engine and only had one cylinder fire. I went through the typical spark, fuel, power to injectors check and have ruled it to be clogged injectors.

Should I send them off to be cleaned (about $200) or buy a set of new injectors ($300 for 38 lb deatschwerks). OR does anyone have a good way of cleaning them myself? I can soak them in cleaner, but is there a way to force the cleaner through?

Jeebalow

iTrader: (3)

And because I am a pic *****:
Injectors in question:

porksoda

iTrader: (39)

I've seen people jump the wires on it and pump through some cleaner that way *** opposed to just soaking them. I know the Carquest parts store in my town cleans and rebuilds injectors for a lot cheaper than $200.

Jeebalow

iTrader: (3)

Thanks for the suggestion. Unfortunately, carquest by me doesn't clean injectors.

How do they pump the cleaner through when they jump them ? What is creating the pressure? Maybe I should draw something up and make it while I'm waiting for my driveshaft to be made. Could use shop air to pressurize it.

Jason Z69

Thats a good lookin set up. Nice install. Shop air should work. Just regulate properly. U can use a can with a hose in it to push the cleaner through the system.

1FastBrick

iTrader: (17)

You need to pulse them and blow up through the injector to back flush.

If you have access to an ultrasonic device, and you can figure out how to pulse them, you could do it your self.

If your electro savvy you could make one. Here is a DIY for the pulser... https://www.youtube.com/watch?v=e5Dyr34qd_k

IF you search Youtube, there are some DIY tips and tricks for cleaning fuel injectors.

Jeebalow

iTrader: (3)

Awesome, seems simple enough to make the 555 timer circuits. Thanks! I'll look into an Ultrasonic cleaner, put them in there and pulse them. The do the blow back to get more stuff out. I'm thinking of using clear pvc and turning some aluminum to fit each end of the injector and threading it into the pvc. I can pressurize one side of the injector at a time and and force the cleaner through in each direction while pulsing them. Should be under $50 when all is said and done. I'll update with any progress.

porksoda

iTrader: (39)

You can use shop air or I've also seen people fill a big syringe with whatever cleaner they choose and attach it to the injector with hose and pressurize it by just squeezing down on the syringe.

Jason Z69

1 FastBrick. Thanks for the link. U always seem to have some good info.

Jeebalow. Good luck with the cleaning.

Jeebalow

iTrader: (3)

I went to Harbor Freight and bought an ultrasonic cleaner for $35. Put the injectors in there with fuel system cleaner and cleaned for about 10 min. Then powered them up to make sure solenoid was free. This is the result

5.3 in 95 C1500 First Start - YouTube