1975 280Z rough idling

[shadesh]

Are you saying that the car ran fine after the Seafoam treatment? If so, change the oil and check again for the fuel smell in the oil in about a week. It's likely that the fuel smell in the oil was already there before the Seafoam treatment. The only way to really check an injector for leaking is off the car with a pressurized fuel injector cannister cleaner, a container to catch the fuel, and the tester on the left in post #7.

No.. I meant to state that the injector that was not clicking seemed to work after the seafoam treatment.

I will change the oil and check again in a week to see if I have the same smell.

Thanks Stephen. You are always helpful.

[sblake01]

You probably cleaned a clog out of nozzke in the injector with the Seafoam. Sometimes that works somtimes it doesn't because the Seaafoam has to travel through the entire fuel system. The most effective way to clean them is the manner described in my previous post above with a professional strength cleaner like Pro Ject-R Kleen. In fact that's the only way you can use that type of solution. If you put in the gas tank it would likely damage something in the fuel system along th way. But, I digress. If you've not done so yet, I'd suggest a new fuel filter at this point.

[Neumeier]

I have had a company called Cruzin Performance clean fuel injectors for me in the past. They also provide the flow test data, so you know whether or not each injector delivers the same amount of fuel. Here is the web site. Their turn-around time was quick.

http://www.cruzinperformance.com/

[sblake01]

I have the equipment to clean and flow test them at home. It's just 'luck of the draw' to have a matched set. You take any two 'identical' injectors and there will almost always be at least a slight variation in the flow rates. As long as there's not a drastic difference among the 6, they're fine for normal use. They batch fire so as long as there's adequate flow from each injector, the slight variance won't really matter in any way you'd really notice. Racers might want a higher and matched flow rate. I mark the ones I test and match them so that each one in the set of 6 is as close as possible to the others. Each of my cars have matched sets or at least they matched when I put them in.