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Date: Tue, 20 Apr 1999 21:27:57 +0100
From: David Hill <davhill@cwcom.net>
Organization: Psychomotor
To: Andrew Thompson <ajt@expmining.com.au>
CC: triumphs, 2000 Register <2000-register@autox.team.net>
Subject: Re: Any Bleeding Suggestions-it runs
References: <FBFAE0C603F0D1118468006094B9172214F7E9@SERVER1>
Hi, Andrew,
I've been speaking to Mike Pumford again and it looks like the springs I
have are aftermarket. Following a great deal of thought and Mike's
advice, I've decided to send the MU in for new,correct springs, a new
vac diaphragm and calibration; the PRV can also be calibrated at the
same time.
I'm not one to be defeated by a job but in this case, my MU has been
tampered with in the past and was never properly set up to the new
springs. Someone had also festooned the vac pipes with a collection of
clips, clearly in an attempt to consolidate the vacuum. Add the
diaphragm leak and the unknown quantity of the PRV setting and you have
a stack of interacting problems which could easily cause me months of
hassle. The bottom line is that I have the opportunity to have the
system calibrated on a Hartridge unit. Since the injectors have already
been done, setting up the MU and PRV as per factory means I will have
eliminated any maladjustment and undetected problems in the entire
system.
I'll be doing this after the MOT test, so that I can show the car at the
end of May.
In the end analysis, had there been only a single, or perhaps two
problems, I would have set the unit up myself. However, even Egil's
splendid hints on linear measurement for the datum track couldn't cure
the rough running and it's possible that there may be some other problem
which will show up on the Hartridge rig. Perhaps most usefully of all,
Pumford's will produce a report indicating exactly what the problem is
and, as promised, I will detail the whole job on the list when I am
happy with Tamara's performance.
Cheers,
Dave Hill.
Andrew Thompson wrote:
>
> David
>
> If those are TR5 springs (and I don't know how you tell because as you say
> after market springs were silver as well ) I would be very interested in
> them as I have a SAH 357 cam and only 6 inches of mercury for vacuum. This
> makes setting up the MU v.difficult (at least for around town stuff). I
> think the smaller of the two springs for a TR5 is weaker (longer??).
>
> Try inserting a very thin feeler guage in the MU at idle between the datum
> track and fuel shuttle. This will lean it out if that's the problem.
>
> Cheers Andy T
>
> > -----Original Message-----
> > From: David Hill [SMTP:davhill@cwcom.net]
> > Sent: Tuesday, April 20, 1999 1:31 AM
> > To: Triumphs List; 2000 Register
> > Subject: Any Bleeding Suggestions-it runs
> >
> > Hi, All,
> >
> > Many thanks for all the replies,
> >
> > I charged two batteries overnight, whipped out the plugs, disconnected
> > the coil feed and put #1 injector into a glass jar so I could see what
> > was happening. After half a dozen turns, the injectors started spitting.
> > The remaining inlets smelt of fuel so I *was* being impatient.
> >
> > So, plugs back in, connect it all up and it started. And what's more, no
> > leaks :-)
> > The bad news is that it still runs like a dog. Has a word with Pumford's
> > (again being remarkably helpful) who confirmed the MU timing is right.
> > However, my car has shiny silver calibration springs which are (a)
> > aftermarket or (b) TR5-the 132 bhp PI should have blue springs. . Also,
> > the vac diaphragm can be turned on its centre mount and is not holding
> > vacuum for long, so I haven't finished yet.
> >
> > Still, it runs and I'm chuffed about that. The symptom is rough running,
> > very like a rich mixture, including optional vibro-massage in the
> > driving sets, from the radically shuddering block. Plan B is to take the
> > car for its impending MOT test-no matter how it runs-and work from
> > there. I'll get an emmissions figure while I'm at it.
> >
> > Just one little tip for anyone thinking of replacing the throttle
> > countershaft bearings. Mine are just that shade too tight, stopping the
> > return spring from closing the throttle. This can be cured by a touch of
> > reaming.
> >
> > When the PI is finally sorted, I'll relate the entire tale-it's not so
> > scary to do.
> >
> > Cheers,
> >
> > Dave Hill
> >
> >
> >
> > David Hill wrote:
> > >
> > > Hello All,
> > >
> > > Tamara the 2.5PI is ready for a start now. But, I have flattened two
> > > batteries (well, one-the first didn't have enough urge to start an
> > > argument) and my plugs are bone dry.
> > >
> > > Any ideas out there on a way to pre-bleed the fuel lines, since it's all
> > > been apart? Or am I just being impatient?
> > >
> > > Thanks,
> > >
> > > Dave Hill
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