Clean your injectors w/o removal...

JDaniel · JDaniel's Garage

I happened to be watching some late night TV, and stumbled into a show called "Two Guys Garage" (or something similar to that).
They were doing a tune up on a late model pontiac and decided to clean the injectors. They unplugged the fuel pump, hooked up a can of compressed injector cleaner to a pressure regulator, attached it to the fuel rail, fired up the motor, and let it run until the can was empty.

I don't know if it was the hour or the booze, but it seemed like a great idea. Has anyone ever attempted this with their car? What was in the can? Does it work? It seems too easy. No, this was not an infomercial.

zuerchers · 08-02-2002, 07:54 AM

funny, i saw the same show and was going to post the same question. speed channel is great isn't it?

pbs911 · pbs911's Garage

I've seen that show too. However, I prefer to do it the fun way.

Get a big bottle to Techron and pour into a 1/4 filled gas tank. Now take the car to a nice deserted windy road type of place and drive the hell out it, getting the engine nice and hot and running at WFO. Refill the tank to another 1/4 tank and repeat. Then fill the tank, drive till empty, and change the oil. Probably the same result, but much more fun.

Doug Zielke · 08-02-2002, 09:05 AM

This is no big deal....Mr. Goodwrench does it every day at the dealership service dept. "Injector Service Special...$49.99...while you wait...."

Probably more of a concern (for CIS cars) than the injectors themselves, are the injector o-ring seals and shells. Mine we're so deteriorated, it's amazing the motor ran at all.

KTL · 08-02-2002, 09:21 AM

Berryman B-12 Chemtool. Pour a can in your tank and go. Your valves will be much cleaner. I was impressed when I removed my exchangers this winter to discover how clean the previously blackened-with-carbon valves were. I'm sure the injectors received the same treatment. Good stuff.

don911 · don911's Garage

My injectors are getting cleaned tomorrow. My fuel mixture is too lean. Fuel pressure is normal. Hopefully it is only dirty injectors that is causing the problem.

TimT · 08-02-2002, 12:50 PM

you can get that injector cleaner from parts stores that service "the industry" i.e. local mechanics etc. You need to get a special hose that goes from the can of cleaner to the schrader valve on the injector rail. I think In all its about $50 to get the celaner and hose the first time 'round

stlrj · 08-04-2002, 08:33 PM

Great idea, only one problem, how do you get a schrader installed on a Carrera fuel rail?

Joe

Joe911 · 08-05-2002, 06:06 AM

About every 6 months my 3.2 develops a flat spot around 2-3K (lean is my guess - particularly when cold) and I run Techron through a tank or two. Seems to improve it and I attribute it to better spray from the injectors. The commercial treatment works similarly - just more potent stuff and probably does a better job.

I used to own a BMW/Benz repair shop and in the late 80s carbon buildup on valves was a big problem. We had one of these injector cleaners and the drivability was improved dramatically on some of the cars following treatment.