Honda Car Forum

Still stumped....

I have swapped distributors including the cap, installed a new fuel filter,
swapped the fuel regulator....no luck the car still does not want to start
when cold and seems to miss and hesitate slightly when put under load once I
get to run

I checked the fuel pump flow and I have a question....how fast should fuel
start to flow when the fuel return line is disconnected. The manual says
the pump should deliver 8 ounces in ten seconds but fuel doesn't flow for
the first 3 or 4 seconds once the pump is started through the ignition
switch (main relay terminal jumped). Is this a problem? Once fuel is
flowing, the pump delivers 8 ounces in ten seconds roughly. Should I be
chasing this at all?

Any ideas?

Tim

"Tim Channel" <channel@logicsouth.com> wrote in message
news:vhc8efmbdi6bf6@corp.supernews.com...
> I'm stumped......I have a 1987 Civic Si hatchback that just started
> misbehaving when starting cold. This is what happens:
>
> Turn key to ignition position
> All the appropriate lights on the dash show, oil, pgm-fi, brake...
> Turn key to start position
> Engine spins but hits on cylinders sporadically
> Engine makes a snapping noise every rotation
> Engine backfires through throttle body
> Engine eventually picks up on enough cylinders to keep itself running
> Engine eventually starts hitting on all cylinders and evens out.
> This only happens when I start the engine stone cold.
> The engine fires right up when warm.
>
> I have swapped computers (I have a spare), checked timing, spark plugs,
> wires, O2 sensor, crank angle sensor, thermowax sensor....no luck...any
> ideas? This is driving me nuts and I refuse to take the car in to a
> mechanic.
>
> Help me out guys.
>
> Tim
>
>
>

If it's an electric fuel pump, they usually need a few seconds to
build up fuel pressure...that's normal.

Sounds like it's working okay...ask a Honda tech at the dealer to be
sure though (or look in your Haynes/Chilton/factory manual).

John D.




"Tim Channel" <channel@logicsouth.com> wrote in message news:<vhufq4n6568m46@corp.supernews.com>...
> Still stumped....
>
> I have swapped distributors including the cap, installed a new fuel filter,
> swapped the fuel regulator....no luck the car still does not want to start
> when cold and seems to miss and hesitate slightly when put under load once I
> get to run
>
> I checked the fuel pump flow and I have a question....how fast should fuel
> start to flow when the fuel return line is disconnected. The manual says
> the pump should deliver 8 ounces in ten seconds but fuel doesn't flow for
> the first 3 or 4 seconds once the pump is started through the ignition
> switch (main relay terminal jumped). Is this a problem? Once fuel is
> flowing, the pump delivers 8 ounces in ten seconds roughly. Should I be
> chasing this at all?
>
> Any ideas?
>
> Tim
>
> "Tim Channel" <channel@logicsouth.com> wrote in message
> news:vhc8efmbdi6bf6@corp.supernews.com...
> > I'm stumped......I have a 1987 Civic Si hatchback that just started
> > misbehaving when starting cold. This is what happens:
> >
> > Turn key to ignition position
> > All the appropriate lights on the dash show, oil, pgm-fi, brake...
> > Turn key to start position
> > Engine spins but hits on cylinders sporadically
> > Engine makes a snapping noise every rotation
> > Engine backfires through throttle body
> > Engine eventually picks up on enough cylinders to keep itself running
> > Engine eventually starts hitting on all cylinders and evens out.
> > This only happens when I start the engine stone cold.
> > The engine fires right up when warm.
> >
> > I have swapped computers (I have a spare), checked timing, spark plugs,
> > wires, O2 sensor, crank angle sensor, thermowax sensor....no luck...any
> > ideas? This is driving me nuts and I refuse to take the car in to a
> > mechanic.
> >
> > Help me out guys.
> >
> > Tim
> >
> >
> >