Oblongshapes

iTrader: (1)

I think I figured out the cause.... but here is the story.

I figured I would get all the preliminary stuff done before I turbocharge. Well, I put in the 300zx injectors and I noticed smoke coming out of the muffler. It was white so i knew it wasnt oil... As it ran longer fuel began dripping out of the exhaust and I cut the engine. I pulled off the upper intake again and noticed that one phelm had fuel lying on top of the valves. i thought maybe the 0-ring wasnt seated right so i changed the o ring and replaced (actually swapped a front one with the rear one incase it was a faulty injector).

Still the same problem... So i put the stock 3 back in the front and the smoke seemed less.

Im thinking that the 400cc with the walbro fuel pump is just delivering way too much fuel for the N/A engine. I guess I will just have to wait till Im actually turbo'ed to put these in.

Any one else ever try running the 400cc N/A and get white smoke and fuel drips?

Thanks

matty

iTrader: (54)

Well you got bad results with the 370cc Injectors and now you wanna go UP to 400cc ?? Am I missing something

-matt

Oblongshapes

iTrader: (1)

no they are 300zx injectors that flow 400

chris'smax

iTrader: (3)

how are you controlling these injectors? Did you try lowering base FP?

I30tMikeD

iTrader: (8)

Well, being NA and idling have nothing to do with each other. Even if you had a turbo installed, the car at idle is the same.

If you have not turned down base fuel pressure with an AFPR, have a walbro installed, and running an A32 MAF, then your dumping a tone of fuel.

I am also confuesed by your post. Your using a faulty injector? You put in 3 stock injectors and 3 400cc injectors? Please clairify.

Doing preliminary installs before the turbo goes on is a good idea. But that is for such things as the fuel pump, any guages, battery relocation. I would not have just installed 400cc injectors without any means to control them.

slimer

iTrader: (13)

did you adjust base fp?

Bags

iTrader: (3)

Sounds like a bad o-ring, maybe it's torn.

I have 400 cc injectors in the car, 255 fuel pump, base FP, AND Z32 maf. Car runs fine. NA, BTW.

95CustomMaxima

iTrader: (5)

Make sure you grease up the O-rings, use motor oil or such to grease them. Like Bags said it is probably a torn O-ring(s), hence the white smoke and the fuel out the exhaust. Check and grease the O-rings.

-Nick