15mpg

PukkaSilvia · #1 07-09-2007, 20:18

lol the fuel pressure regulator has to be one of the most common things to go on the s12.

sideways danny · #2 09-09-2007, 13:13

really does suck to change it too, glad I have an FSE to go on

Ronin · #3 09-09-2007, 16:54

Mine has very similar symptoms and since I put the new head on it doesn't like to tick over, I thought it was a dodgy injector I now wondering if it's the fuel pressure regulator.

s13eater · #4 09-09-2007, 16:58

Quote:

Originally Posted by Ronin

Mine has very similar symptoms, I thought it was a dodgy injector I now wondering if it's the fuel pressure regulator.

fit a inline pressure reg mate.

Ronin · #5 09-09-2007, 18:16

So fitting something like This or This may cure the problem?

Wocketfast · #6 09-09-2007, 18:18

bum. sold me car cos of the poor fuel (and ridiculous insurance) and it could have been this :P why didnt I find out this before

Although the wideband showed it as lean on tick over, even crusing at 30 so about -10PSI boost she was reasding and AFR of 13.something i.e. a touch rich

Ronin · #7 09-09-2007, 19:22

My c02 is all over the place on tick over at the moment.

s13eater · #8 09-09-2007, 19:24

13 is lean mate, i would not run an engine in the 13's on boost

, i'd say about 14's on tickover, although my mk1 din't like to tickover that lean, i think it was an airspeed issue due to the large throttle body and big tubby, but once it was moving it was ok, i got it mapped as lean as i could at 70mph untill it started to misfire, then put some more fuel in, it did around 32mpg on a long run.