You can determine variance between cylinders by taking enough
readings. The key to any instrumentation is repeatability. What I am
saying is that I would want enough repetition to know beyond any doubt what
is repeatable and what is an anomaly.
I'd hate to see someone pronounce a head or a gasket dead based on just one
reading from this tool. Most of us DIYers are willing to spend a little
extra time to save a buck and to be sure our Benz is healthy and dependable.
Loren
At 08:48 PM 12/20/2005, you wrote:
So, it sounds like it would be difficult to determine if the variance
between cylinders is within specs with this tool -- -- -- just wether
you had a blown head gasket?
On 12/20/05, Loren Faeth <[EMAIL PROTECTED]> wrote:
> I bought one of those a few years ago. It is not too bad for the
> money. There are 3 weaknesses I found.
> 1. there is an o-ring in the quick coupler that will blow out and get lost
> if you forget to discharge the pressure before unhooking the QC.
> 2. The Nozzle holder adapter is a little rinkydink with the copper seal
> that is easy to loose. HOWEVER, a snapon adapter costs more than the whole
> set from Tooldesk.
> 3. I compared readings with the tooldesk gauge vs a snapon gauge. The
> Tooldesk gauge had more variability, as might be expected from a less
> expensive tool with a smaller dia pressure gauge. I'd recommend at lease
> 3-4 readings per cyl and then either average or throw out the anomalies.
>
> All in all, it is a good buy for the money. It just helps to be aware of
> the shortcomings. It produces results that are a guide, not the
> gospel. Before settling on a diagnosis from this tool alone, i'd want to
> look at other factors.
>
> Loren
--
OK Don, KD5NRO
Norman, OK
'90 300D, '87 300SDL, '81 240D, '78 450SLC
The FSM created the Diesel Benz
http://www.venganza.org/
_______________________________________
For new parts see official list sponsor: http://www.buymbparts.com/
For used parts email [EMAIL PROTECTED]
To Unsubscribe or change delivery options go to:
http://striplin.net/mailman/listinfo/mercedes_striplin.net
