94 Altima

Thread view:

Enable EMail Alerts

Start New Thread

Thread rating:

John Clements - 10 Mar 2007 17:48 GMT

My heighbor has a 94 altima. About a month ago her boy
friend replaced the fuel pump. The car cranked, but ran ragged. Some body
told her she needed fuel injectors.
So I put the new injectors in. The car cranked and ran fine for awhile.
While driving down the road, it started bogging out, kind of like it wasn't
getting enough fuel.
Come to find out it was getting too much fuel. I replace the fuel rail
regulator, so the car is still flooding out. I blew the cylinders out, and
all of this fuel came out the cylinders. What am I missing? The coil seems
to be fine
I did all the vacuum checks.

Reply to this Message

AS - 11 Mar 2007 06:10 GMT

Is the vacuum line to the fuel pressure regulator connected to the
proper vacuum port? The injectors you got are the exact replacement?
Is the fuel pump the exact replacement? Is the coolant temperature
sensor working alright (the car may think it is cold when it is not)?

> My heighbor has a 94 altima. About a month ago her boy
> friend replaced the fuel pump. The car cranked, but ran ragged. Some body
[quoted text clipped - 7 lines]
> to be fine
> I did all the vacuum checks.

Reply to this Message

John Clements - 11 Mar 2007 10:45 GMT

As for the fuel pump? I don't know. I''l ask her boy friend
when he gets back for out of town. She bought the injectors from Autozone.
She paid $110 a piece. Yes the
vacuum line is connected to the right port. I was wondering if the coil
might not be creating enough spark.
I stuck a screwdriver in a plugwire and held close to the struttower stud.
It sparked. A yellow spark. I haven't checked the sensor, I can't get the
thing to start, turns over will not start. It'll hit sometimes when you hold
the accelerator to the floor.

> Is the vacuum line to the fuel pressure regulator connected to the
> proper vacuum port? The injectors you got are the exact replacement?
[quoted text clipped - 12 lines]
> > to be fine
> > I did all the vacuum checks.

Reply to this Message

E Meyer - 11 Mar 2007 20:10 GMT

If this engine uses the same injectors as the '91 240sx (it is a variant of
the same engine), then it is extremely easy to cut the bottom O-ring on the
injector when pressing it into the rail, which then leaks fuel and will
cause the exact symptom you describe. Pop a couple of them out and see if
the O-rings are intact. If they are damaged, make sure you grease up the
new ones (motor oil usually works) before you put them in.

On 3/11/07 4:45 AM, in article
jdQIh.126235$_73.81808@newsread2.news.pas.earthlink.net, "John Clements"
<johnclements@sprintmail.com> wrote:

> As for the fuel pump? I don't know. I''l ask her boy friend
> when he gets back for out of town. She bought the injectors from Autozone.
[quoted text clipped - 25 lines]
>>> to be fine
>>> I did all the vacuum checks.

Reply to this Message

John Clements - 12 Mar 2007 08:37 GMT

Thanks, I'll try that when I get off work tonight. :-D

> If this engine uses the same injectors as the '91 240sx (it is a variant of
> the same engine), then it is extremely easy to cut the bottom O-ring on the
[quoted text clipped - 36 lines]
> >>> to be fine
> >>> I did all the vacuum checks.

Reply to this Message