Want to clean injectors on '72 4.5
 

It will be my friend's in about 3 days. We then want to do valve seals and clean the injectors while we are at it. He went to NAPA to get some carb cleaner and he asked the guy about what brand he should use to clean injectors, the guy told him soaking wouldn't do any good because that doesn't get them clean on the inside. Is the only way to do it to take it to a shop to have them professionally cleaned?
Thanks
David

K- injection?

You can spray some in the injector and blow it through with compressed air. Generally, I would say Techron and drive it a bit.


Michael

ATF has detergent properties and is good lubrication, too.
Be conservative and try half a quart to a tankfull of gas.
Go to www.m-100.cc and search ATF.
I have run it in my K-jet 6.9 and it works fine.
Don't overdo it.
Clean the screen at the gas line where it enters fuel distributor and the screen in the warm up regulator if you need someplace to use carb cleaner.
Way cheaper than techron, but it is good too.

Toluene, if you can find it at a paint store or Home Depot is good for cleaning, but use this sparingly and if your rubber fuel hoses are not in really good shape, I would stay away from it completely. It will turn rubber to jello as long as it is in contact with the rubber. Once it's gone the rubber will go back to normal.

Toluene is an ingredient in techron in real low concentrations.

A bottle of RedLine or Techron in a full tank will do wonders.

Otherwise, you cannot really get into them to clean them. A shop will have the tools (a box to fire the injector and a pressurized supply of cleaner).

If you are having running problems, you CAN test them for spray pattern, but it's VERY dangerous, even with the Bosch testing tool (which no one has seen for ages now, since D-Jet went the way of the dinosaurs in 1976). Unless you have positively eliminated all air leaks in the manifold, etc, it's gonna be hard to tell.

Peter

bg 44k once a year..... a large bottle of techron at 6 months.