Ok,I have taken my x into the local Nissan dealership with a multiple cylinder misfire, they are first trying a fuel injector flush then say the next step is replacing the fuel injectors themselves and want over $1000 bucks to do the replacement. I am out of warranty with 78K on the truck. This seems too early to replace the injectors to me on a 2000 model year. What have been peoples experience with these and Nissans. Is this a job that has to be done by a certified tech, I'm pretty engine savvy, can I do it myself and save $400 in labor?

Is your truck running like crap or is this the result of your Service Engine Soon light coming on?

If the light has come on only once it may be no more than a bad tank of gas. I'd reset it and drive it for awhile before I parted with $1000.

If it turns out that multiple injectors are bad (and I doubt it) mere mortals can change them. It will take a little work because I think the intake is in the way.

Have the timing and idle speed checked and adjusted if necessary.
After that try a new Distributor Cap (and check the rotor).

If you do it yourself it will only cost you about $20-$30 (for the cap).
If that does not fix it then let the dealers do what they want.

Only trust a dealer as far as you can throw them.

I've always been that same way '97. I have replaced the cap, rotor, wires, plugs etc. the truck has been running bad all summer, stalling at stoplights etc. When I got it back from the dealer after nearly $300 of diagniostic work they told me the distributor is what needs to be replaced. I guess when the tech pushes on the coils the rough idle and stalling goes away. I did a little reasearch into the injectors and priced them out on xterraparts.com compared to my dealer, my dealer ha a 40% markup for the parts. So I have a feeling I'll get the dist through them. I also went in with a list of TSB's from the internet and the dealer had only seen about half of the ones I had, very reassuring.

Both jobs seem like easy DIY's, but is the problem caused by the injectors or the distributor? For $300 of diagnostics they better be right, whatever the cause is.

So, did they due the injector cleaning for the $300 ??

Yes they did do that but it didn't help.

Got a new distributor, put it in, purrs like a kitten again. The install was very easy, I can't even tella difference in the timing although I probably need to adjust it. Problem Solved!