Fuel Economy

paranoid · Unread post by **paranoid** » 13 Feb 2005, 02:00

If I do purely stop start all month I don't get a lot more than you, but if I do a couple of decent journeys it sipps fuel and the mileage shoots up.

crapday · Unread post by **crapday** » 13 Feb 2005, 13:14

just noticed that the air filter was not connected to the tubbing underneath it, would that make a difference.

weety · Unread post by **weety** » 13 Feb 2005, 14:10

shouldnt do, i never managed to refit mine on my m reg one after i had to take it off...never seemed to make any difference to the economy

jeremy · Unread post by **jeremy** » 13 Feb 2005, 14:39

If the air cleaner is disconnected it probably won't affect the vehicle at all, and indeed may actually improve performance as there is no drag imposed by the filter. However these things are there for a purpose and its purpose is to prevent abrasive particles getting into the cylinder bores and causing premature wear.
Driving in the damp probably won't do much harm, driving on hot summer days in sandy areas may.
Jeremy

Unread post by **philhoward** » 13 Feb 2005, 14:41

Do you get excesive smoking (soot) out of the exhaust if you put your foot down? Could be still thinking its cold; is the cold start enrichment playing up?

jeremy · Unread post by **jeremy** » 13 Feb 2005, 14:50

On rotodiesel pump the cold start device (waxstat) fails in the hot position. Somehow I think the Bosch will as well as the cable contracts when cold.
In fact if I disconnect it on my BX TD the engine just starts very slowly and is prone to stalling. Set properly on ZX 1.9D hot idle is 750 and cold is about 950. (Bosch may be faster)
jeremy

Tuftus · Unread post by **Tuftus** » 13 Feb 2005, 22:57

Just out of interest, what range do all you other Xsara HDi owners get from a tank?
Andy

crapday · Unread post by **crapday** » 13 Feb 2005, 23:11

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by philhoward

Do you get excesive smoking (soot) out of the exhaust if you put your foot down? Could be still thinking its cold; is the cold start enrichment playing up?
<hr height="1" noshade id="quote"></blockquote id="quote">
no, I did a italian tune and cleared all the soot so now no more smoking for the time being.

crapday · Unread post by **crapday** » 13 Feb 2005, 23:12

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by KowalskiAir and fuel filter problems don't tend to cause big drops in fuel economy, they can cause small drops. My Xantia TD does around 600 miles on a tank. 350 miles from brim to brim would indicate 25mpg. 25mpg indicates a serious problem.<hr height="1" noshade id="quote"></blockquote id="quote">
what sort of 'SERIOUS PROBLEM"[V]

paranoid · Unread post by **paranoid** » 14 Feb 2005, 00:15

Bro in laws Xsara estate 1.9td used 99% on the motorway motorway gets minimum 650 miles to a tank

robsons · Unread post by **robsons** » 14 Feb 2005, 18:05

Hmmm my Volcane TD only gets 370miles to a tank - 90% motorway at 3500rpm+

paranoid · Unread post by **paranoid** » 14 Feb 2005, 18:08

Checked with in law this morning average over the year works out to 620-630 a tank