Is it OK for TBI injectors to "drip" at idle??

[removalmachine]

I've been chasing a cold rough running problem - tune up, new EGR, CTS, coil, etc - and while it's been getting progressivley better - it still isn't fixed entirely.

So today I decide to check the "spray pattern" of my TBI injectors - knowing nothing more than there should be a cone pattern.

At idle, both are spraying a cone but the drivers side injector also has fuel dripping from the tip, in the midst of the cone pattern. The one side of the cone pattern looks a little less fine and even than the balance.

By moving the throttle, and burping it to WOT, I cease to be able to see the drops anymore, but as soon as it's back close to idle, there it is again, drip drip drip.

I realize this isn't normal - but could it be a problem?

Can I fix that - or do I have to replace the injector? If I am to clean it, how do you clean a TBI injector - there's no rail to plug into - do I try and dump crap in the tank and plug my filter up?

Any insight would sure be appreciated!

[84fiero123]

fuel injector cleaner in the tank will not plug filter but i would try that first

[screwturner]

Hope it's not too late for you. But you can buy rebuild kit from the parts store. I'm not sure if you must remove the entire TBI from the intake. Even if you do it's very difficult. Once you get the injectors off the engine they can be removed quite easily.

Get one of the repair manual, they'll step you through the process. It was surprisingly easy and cost about $35.