Volvo CFI system

[Clare Snyder]

goflo at pacbell.net wrote:
> 
> If the injector O-ring seals leak you get high HCs and rough idle.

Not IF, but WHEN. Also, the injectors, after about 200,000, get sloppy.
The pintle springs get weak, and sometimes break, so the injectors
dribble. Not as serious as on a port EFI, but still affects the
emissions

> 
> Regards, Jack
> 
> Steve Jernigan wrote:
> >
> > Hi Group !
> >         Hope someone can help. This is not really an EFI question, the old Volvo
> > 240 (1977) uses a continuous mechanical fuel injection (CFI) system, but
> > this one has an O2 sensor and what the manual calls a "frequency valve"
> > which apparently adjusts the mixture in response to the sensor. After
> > 260,000 trouble free miles, the ol' tank no longer passes emissions for
> > hydrocarbons, this accompanied by a slightly rough idle. CO is just fine,
> > ~1%. Compression is OK, 120lb - 130lb ...
> 
> <checked everything but the fuzzy dice>

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                 Looks like we've finally fixed it!!!
                I am still clare.snyder.on.ca at ibm.net
                 Snyder.on.ca is BACK ON THE NET!!!
        With any luck, I will be Clare at snyder.on.ca real soon!!!

                           Clare Snyder
                         Waterloo, Ontario