Wow. you're getting quite handy, thar.

Thank you sir. I do know the electrical bits.

UT, you really only need three cylinders - the others are redundant, just like the extra engines on an airplane.

Hmmmm eBay has used parts, tested as good, for half the price... what do...

at the risk of channelling tw, you need know what's broke before you try to fix it by throwing parts at it. if you're getting multi cyl misfire, and you only have two cyls testing bad... how do you know that's the whole multi group? right, you don't. it is *definitely* OK to solve a problem like this in an iterative fashion, fix what you can see wrong in front of you, test again, fix what shows up next. That's a perfectly fine strategy.

I don't know--do you--what the possible repair/replace solution options are for a fuel injector that tests this way? What about cleaning it? Like I said, *I* don't know in this case. As for misfires, there are a hundred and one ways for a cylinder to misfire. fuel/air/fire.. it is a mystical trinity.

What to do, is still a good question. I'd focus on what it would take to get the electrical readings of those injectors you can reach back into the good range. replace or repair and then go from there.

Someone posted earlier about fuel, spark, air etc. Nowadays what with 769 sensors, computers all over the car, about all a regular Joe can do anymore is throw parts at 'em. Start with the cheapest, most pertinent-est ones.

definitely go to the auto parts store and get the code readings. being too lazy to research, what is the year make and model of the cellar car? a good friend, the same one that helped me swap transmissions, is very good at diagnosis and advice. when i get the Y/M&M i will consult him as well. if it is the injectors i recommend changing them all with new ones. another thing it may be is a bad cam position sensor if you have one on there. the Fixed Or Repaired Daily had that problem and would miss going down the freeway under stress (ie going uphill) but always cranked right up so maybe it'snot that. but worth a look see.

I got the code dude. Cylinder 4 misfire. But I can't afford to even replace the single injector that I think is bad.

This is a 1995 Maxima with a VQ30DE engine which is also found in Maximas through 2001 and Infiniti I30s from 1996-2001.

:smack: you did, didn't you. was speed reading and posting.

ok. RC recommends running prestone fuel injection cleaner through the engine even though you already ran STP through it. then let the car run for about an hour or drive it for that long before replacing the injectors. if it does come to it you can replace them with used ones. i'm on the phone with him now discussing this. lmao he just said you can go to pick a part and put them in your pocket and not pay for em. lol you have to know RC, he's got a heart of gold but will save money where he can. but do this in seriousness, take an old injector with you to make sure you get the correct ones. hope this helps.

It took forever for the eBay'd replacement injectors to arrive, but today I replaced the one saying it was bad.

Result

http://cellar.org/2011/fuckyea.gif

No more codes thrown as yet. Engine runs damn smooth. I've saved $300 by figuring this shit out off the Interwebs.

sweetness

good Job !!!

Now run some injector cleaner thru it

might as well continue the thread

$800 in brake work needed to pass inspection :mecry:

I'm doing it, but this is a tough one.

You can Do it UT !!!!

Just rember to Chock ( Or scotch , or put a block of wood) behind the wheels