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RE: [OT] Petrol Pumps ....was Views on X10 Addressing
- To: <ukha_d@xxxxxxx>
- Subject: RE: [OT] Petrol Pumps ....was Views on X10
Addressing
- From: "James Hoye" <james.hoye@xxxxxxx>
- Date: Thu, 6 Sep 2001 11:01:48 +0100
- Delivered-to: rich@xxxxxxx
- Delivered-to: mailing list ukha_d@xxxxxxx
- Mailing-list: list ukha_d@xxxxxxx; contact
ukha_d-owner@xxxxxxx
- Reply-to: ukha_d@xxxxxxx
> Ok - admitably "some" cars need to keep running on leaded
but the vast
> majority (95%) of engines running leaded could use unleaded and have
no
> problems apart from "pinging". The pinging is caused by the
valves not
> having enough lead deposit to cushion the valve and so
"pinging"
I though 'pinking' was due to the fuel igniting too soon. The lead content
slowed/delayed the combustion process (whilst lubricating the valve seats)
which is why you had to retard the ignition when switching earlier (1980s)
vehicles to unleaded. Some later vehicles had a 'program' plug linked to
the ECU which you reversed to set 95 or 98RON.
Of course, I may be talking complete arse!
James H
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