Hi Glen
Which number plug was sooty ? If its 2 or 5 then it could be a banjo bolt
non-return valve, well, returning... I had problems like this and replacing
the #2 banjo and seals worked.
(I'd agree with you about the plugs theory too)
Regards,
Neil
> -----Original Message-----
> From: owner-6pack@autox.team.net [mailto:owner-6pack@autox.team.net]On
> Behalf Of Glen Johnson
> Sent: Monday, December 16, 2002 10:59
> To: 6pack@autox.team.net
> Subject: PI on 5 cylinders (rough running on start up)
>
>
> My car has been doing the same thing.
>
> It runs rough whenever I start it - when it's cold it feels like the
> motor is going to jump out of the car. When it is hot it starts rough -
> but is manageable and takes a good 45-60 seconds to smooth out to
> something that I would consider reasonable enough to drive. After that
> it is fine and goes like a beast.
>
> I checked fuel pressure and I'm running 105psi.
>
> I spoke to a friend who maintains PI's and has three himself.
>
> He said that more often than not it is actually just a problem with
> spark plugs and that the wrong heat-range or a poorly firing plug could
> cause the problem - hence the car runs better after a short period of
> time.
>
> I thought this sounded like bollocks because I figured that would only
> show up when the car was cold - and mine runs rough even on a hot start.
>
> Anyway, a few days ago I took all the plugs out and inspected them. One
> was pretty sooty and the rest were a nice pale brown.
>
> I swapped the order of the plugs and reassembled and from a cold start
> it ran perfectly smooth. Later that day I tried a hot start and it ran
> rough again - although not as bas as before.
>
> I am starting to think that there is air in my fuel lines somewhere and
> that the ignition/plugs was only part of the story.
>
> Can someone help explain the procedure for clearing air out of the fuel
> lines?
>
> Glen Johnson
> [Site Designer]
> TRIUMPH OWNERS TASMANIA CLUB
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>
> 1977 2500 S (INJECTED)
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