how do you manualy pulse the inj. to see if they are not stuck.

 

I set up a small tank with lacquer thinner put 50 lbs of pressure on the tank and then just run the injector off of a 12volt car battery with a switch. This will clean the injectors. Did this to mine the other day and found five dirty injectors and four stuck half open. I would say from the two hours I spent taking them off and cleaning them I probably gained back over ten lost hp and improved idle gas milage performance and the engine runs smooth. you could set up a system lick what I shortly described above for around 5 - 20 dollars depending on what you already have, I had to buy nothing just used old parts.

 

If you are talking about pulling up the rails, and looking at the injectors while you pulse them, all you need to do is supply a ground to the "non-pink" wire on then injector harness for that injector. The pink wire supplies +12V, the PCM uses the other wire to fire the injector by providing the ground.

Don't do it while the engine is hot.

 

yea did that yesterday. pulled the fuel rail and pulsed the inj. one by one . WOW only had one inj. to pulse, so i pulled them all and started to clean them. bought the intake and fuel rail from a local on the board here. guess it had been sitting up for a couple of years. the old gas that i blew out with shop air smelled like panther ****. took some scrubbing to get the smell off the hands.

 

Hate to drag this up, but.....

Would it be safe to assume this would work on a speed density car also, given it's batch fire setup?? And how exactly should I go about grounding the "non-pink" wire?? Just a test probe into the wire or what??