[Peugeot-L] Re: 1976 Gas 504 driveability - Carb jet question
Thanks all for the excellent suggestions.
Will try all these suggestions this weekendI
will let you all know what we come up with
thanks again!
J
- In peugeot-L@yahoogroups.com, gary freeman <riven2649@y...> wrote:
> Yes, those compensator jets are also called air
> corrector jets; and Solex carbs seem to have alot
> of problems with things coming loose. Because fuel
> has more mass than air, it has more inertia and
> that's
> why you need accelerator pumps; but as velocity
> through the carb venturi increases,for the same
> reason
> fuel flow overcomes air flow creating the need for
> air corrector jets in order to lean out the mixture
> at higher speeds. If one came loose, it would be like
> an incredibly large air corrector jet which would
> lean out the mixture incredibly; and since using the
> choke somewhat alleviates your problem, leaness is
> your problem. If that turns out to not be the
> problem,
> then I would try to find out who rebuilt the carbs
> and see just what they did as replacing jets is not
> usually needed on carb rebuilds; and they certainly
> shouldn't be changing jet sizes unless there was
> something that couldn't be repaired that they were
> compensating for. Sometimes, older carbs wear out
> where the throttle spindles enter the carb body; but
> the key clue here is that they didn't seem to have
> this problem before the rebuild, then why the
> rebuild?
> Although, maybe some deposits were filling in wear
> areas (such as the carb body where the throttle
> spindles fit); and then the cleaning that occurs
> before the rebuild flushed that filler out causing
> air leaks. If Brian's very good tip doesn't pan out,
> you might save some time and headaches by trying to
> talk to the rebuilder.I'm looking forward to your
> progress.
On
> --- Brian Holm <peugeots@v...> wrote:
>
> > Joe,
> >
> > Possibly you are missing one or both of your
> > compensator jets. Looking
> > straight down the throat of each carburetor, the
> > emulsion tube is the
> > structure in the center. The compensator jet screws
> > into the top of the
> > emulsion tube. If it is there you will see a slot
> > for a screwdriver in the
> > brass jet and a small hole in the center. If it is
> > gone you will see a
> > threaded hole.
> >
> > These jets have a tendency to loosen and get inhaled
> > by the engine. They
> > should be prophylactically Loctited with normal-duty
> >
> > Loctite. Over-tightening may break the emulsion
> > tube.
> >
> > In re Dan's suggestion on the plugwires, I concur if
> > yours are old, and
> > suggest going with the late 505 XN6 wires which go
> > all the way to the plug.
> >
> > Brian Holm
> >
> > At 12:15 AM 8/16/2005, tcb323 wrote:
> >
> > >Hi Kenneth,
> > >
> > >Filter is clear and new, brass screens are clear.
> > >Is there a filter anywhere else in the system? like
> > in the tank?
> > >
> > >Any idea how to test flow of the fuel pump? maybe
> > it's the wrong one?
> > >has a pinhole?
> > >
> > >Can anyone help me find the specs on the carb jets?
> > we're stumped.
> > >
> > >Thanks
> > >Joe
> > >
> > >
> > >
> > >--- In peugeot-L@yahoogroups.com, kenneth parker
> > <elkeni@m...> wrote:
> > > > Fuel filter may be gummed up and, also,
> > that little screen (I
> > >think
> > > > there is a little cylindrical screen) where the
> > gas actually enters
> > >the
> > > > top of the carbs.
> > > > Ken
> > > > On Aug 15, 2005, at 12:27 PM, tcb323 wrote:
> > > >
> > > > > The sluggishness is pretty even, doesn't open
> > up over 3500rpm
> > >really.
> > > > > I will try cleaning
> > > > > the carb really thoroughly, but it's pretty
> > clean. The whole car
> > >is
> > > > > amazingly clean and
> > > > > intact, had a really obsessive owner. But
> > this problem has me
> > >stumped
> > > > > so far. Maybe it's
> > > > > as simple as the carb shop installed the wrong
> > jets or something.
> > > > >
> > > > > thanks for the advice though!
> > > > >
> > > > > PS anyone got a set of good 14" rims with
> > holes ? I have the
> > >early
> > > > > kind that won't balance,
> > > > > and I don't want to buy new tires to upgrade
> > to 15" 505 rims.
> > > > >
> > > > > Josef
> > > > >
> > > > > --- In peugeot-L@yahoogroups.com, gary freeman
> > <riven2649@y...>
> > >wrote:
> > > > >> <How does it run past 3,000-3,500 rpm? If
> > it's only
> > > > >> bad under those rpm's, then your progression
> > circuit
> > > > >> may be clogged. Those are holes from the
> > idle circuit
> > > > >> in front of the idle holes so that as the
> > throttle
> > > > >> opens, these are uncovered and provide fuel
> > until the
> > > > >> main circuit comes into full play. If it
> > stumbles off
> > > > >> idle and hesitates alot, but then runs fine
> > after
> > > > >> 3,000-3,500rpm, that is probably your
> > problem.
> > > > >>
> > > > >> --- tcb323 <tcb323@s...> wrote:
> > > > >>
> > > > >>>
> > > > >>> Hi Ken,
> > > > >>> thanks for the response - have checked both
> > accel.
> > > > >>> pumps and they are both squirting -
> > > > >>> should it be a stream or a mist? Mine have a
> > stream.
> > > > >>> Have also checked float level and
> > > > >>> needle valves, and brass screens in carb
> > inlets. all
> > > > >>> seem to be working ok.
> > > > >>>
> > > > >>> Maybe there's an accel pump adjustment
> > procedure I
> > > > >>> havent followed?
> > > > >>> The PO put a new fuel pump in, is there any
> > chance
> > > > >>> it's the wrong one and won't flow
> > > > >>> enough under high load?
> > > > >>>
> > > > >>> thanks for everyone's help!
> > > > >>>
> > > > >>> joe
> > > > >>>
> > > > >>> --- In peugeot-L@yahoogroups.com, kenneth
> > parker
> > > > >>> <elkeni@m...> wrote:
> > > > >>>> Is the accelerator pump giving you a
> > good spray
> > > > >>> of fuel on
> > > > >>>> acceleration? I assume you know how to
> > check it,
> > > > >>> but if not remove the
> > > > >>>> air filter rubber from the carbs and then
> > look
> > > > >>> inside the carb throat
> > > > >>>> while you work the throttle with your hand.
> > If it
> > > > >>> is working well you
> > > > >>>> should see a stream of gas squirting into
> > the carb
> > > > >>> throat. This should
> > > > >>>> be the case with both carbs though, in
> > actual
> > > > >>> driving, the secondary
> > > > >>>> kicks in later than the primary. You can
> > check
> > > > >>> the pumps with the car
> > > > >>>> off.
> > > > >>>> Ken
> > > > >>>> On Aug 14, 2005, at 7:46 PM, tcb323 wrote:
> > > > >>>>
> > > > >>>>> Hello,
> > > > >>>>>
> > > > >>>>> Thanks to all who have given advice on my
> > poor
> > > > >>> acceleration and hill
> > > > >>>>> climbing ability on my 76 gas auto
> > california
> > > > >>> emission 504.
> > > > >>>>>
> > > > >>>>> We think it's a carburation problem. When
> > you
> > > > >>> give it 1/2 choke on
> > > > >>>>> acceleration, it'll pick up, but without
> > that
> > > > >>> choke goose, it's
> > > > >>>>> sluggish and feels 'held back'
> > > > >>>>>
> > > > >>>>> this makes us think it's starving for gas.
> > PO
> > > > >>> states that the car
> > > > >>>>> hasn't run right since the carbs were
> > rebuilt.
> > > > >>> We opened up the main
> > > > >>>>> jets and found 100 on the secondary and
> > 120 on
> > > > >>> the primary.
> > > > >>>>>
> > > > >>>>> Haynes book seems to call for 112 +- 2.5.
> > I am
> > > > >>> not sure it takes the
> > > > >>>>> CA emissions into account. All the smog
> > garbage
> > > > >>> is present and seems to
> > > > >>>>> function.
> > > > >>>>>
> > > > >>>>> Can anyone look up what the right jets for
> > these
> > > > >>> Solexes are?
> > > > >>>>>
> > > > >>>>> dwell angle is set at 56deg. Manual calls
> > for
> >
> === message truncated ===
>
>
>
>
>
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Received on Tue Aug 16 21:59:42 2005
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