You should run the tire pressure at the pressure shown on the inside of the
fuel filler flap - my 78 240D is 28F 32R.
Radial tires must be checked with a gauge - they seldom look low until they
have less than 15psi in them.
Sincerely,
Larry T ('74 911, '67 MGB, 78 240D)
A Blood Test for your oil - www.youroil.net
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----- Original Message -----
From: "andrew strasfogel" <[EMAIL PROTECTED]>
To: "Mercedes mailing list" <[EMAIL PROTECTED]>
Sent: Monday, November 21, 2005 10:33 AM
Subject: Re: [MBZ] Absolutely pathetic fuel "economy"
This has all been very enlightening.
I checked my tires and noticed that the pressure in the LR was quite low.
I
topped it off along with the others so let's see if that makes a
difference.
If not, then phase two will be checking the odometer for accuracy. (low
hanging fruit)
On 11/18/05, Marshall Booth <[EMAIL PROTECTED]> wrote:
Marshall Booth wrote:
> Timing chain life is seldom LESS than 200kmi (should about be double
> that if you use Mobil synthetics) unless you don't change the oil when
> it's dirty!
>
> That the speedometer was worked on a few years ago does NOT insure it's
> accuracy now. You need to measure it. A road with mileage markers is
> good, but it's also helpful to know just how far it is to work and back
> (or some other usual route).
>
> Valve adjustment makes only a small difference in fuel economy until
> they get WAY out.
>
> The most common causes of poor fuel economy I've seen reported are poor
> fuel quality, leaky fuel (or return) lines, low tire pressure, slipping
> odometer drive, low engine operating temperature (below 85 deg. C.).
> All
> of the other engine factors (valves, injectors, timing, poor
> compression, etc.) will contribute, but they tend to be minor
> contributors and they almost all present other symptoms (rough idle,
> noise, poor starting, etc.).
>
> Marshall
I completely forgot the biggest potential change in fuel economy. When
you change from driving a few hundred miles for every cold start to
driving maybe a few or at most 10 miles for every cold start, fuel
consumption can increase and mileage drop by 30 or more percent.
Marshall
--
Marshall Booth (who doesn't respond to unsigned questions)
"der Dieseling Doktor" [EMAIL PROTECTED]
'87 300TD 182Kmi, '84 190D 2.2 229Kmi, '85 190D 2.0 161Kmi, '87 190D 2.5
turbo 237kmi
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