OK, the dealer has confirmed it as a fuel pump problem with our 95 Impreza WRX Sti, the problem now is what do I do about it? Replacing the fuel pump is not a problem, it's what fuel pump to buy and whether it's cheaper to go for an upgrade with other relevant bits or just a standard fuel pump. My worry is that, if the misfire is caused by the fuel pump, are we running the engine lean? I won't be able to find out until I can get the plugs out at the weekend.

So, what I need is advice from those that have gone for an uprated fuel pump, what else needs to be done to accompany it? Bigger injectors? Anything else? Our car is standard and I can't afford a re-map etc so is it best to just fit a new standard pump?

Help!

Cheers

Grim

 

If its just the pump then Just fit a walbro pump job done

 

Cheers for the quick reply but I'd heard that the Walbro one can over fuel the engine. I know that running rich is better than running lean but is this a problem? Also, there is a Walbro one for sale that I have found, new, but it's up for 90 quid, is that too expensive?

Cheers

Grim

 

they are only that brand new.......................

you may find that a 255ltr/hr pump is too much for a std car - you will most probably need a fuel pressure reg to suit also............

alyn