[mondo]

hey all, thanks in advance for reading this,

my sierra just played up pretty bad, it has a 1.6mpfi in it, i was just driving down the highway when it started losing power and struggled to even keep momentum, after a few minutes of this it came good, well good enough to drive at 100kph, but it missed a few beats and was down on power, i got it to my mums where it played up again and just stalled, i left it for about 5mins and it started and idled fine again. i think this is a fuel pump, if anyone else knows more about the issue im all ears.

does anyone have a spare fuel pump or be able to help me out at all?

[Fatzook]

Who did the conversion, and what fuel pump was used?

[mondo]

i did, and the original fuel pump was used that came with the vitara, this was well over a year ago

[Fatzook]

So what fuel tank are you using?

Is your fuel filter blocked?

Are you getting fuel at the rail? Return also?

[reeceh]

Yes as fat zook said. Disconnect the fuel in line to the injector rail and get someone to hit the ignition a few times and see if fuel comes out. You could even disconnect it after the filter providing the pump is before the filter. If no fuel comes through you have a blockage. My zook did this with the g16b. I have 2 pumps. My prepump had a micron filter before it and it was blocked up!

[mondo]

hey guys thanks again for your assistance.

i disconnected the fuel line after the fuel filter and before the filter, it was the same both times, but i remember last year that when i had a line disconnected that fuel shot out with some serious force,
just then it came out steady, but not with the high pressure i was expecting

[mondo]

oh and im using the standard coily tank i had

[Fatzook]

Yeah the fuel should fire across the room.

On the end of the fuel pump, there is a little filter bag. Its possible that this is blocked/ caked with shit.

Might be worth having a look there if you thing the fuel pressure is a bit low.

[mondo]

yea i'll do that early in the morning, if its all clean and it is the pump, i'll have to give suzi sport a buzz, hopefully they have one, i may just go and buy this mazda 6 diesel wagon i've been eyeing off too.
thanks again Pete

[Fatzook]

No worries.

If you have access to a fuel pressure guage it will confirm your suspisions.

[mondo]

just my luck, bought a new fuel pump this morning, only got home this arvo, turns out they sold me the wrong pump..have to wait till tuesday now, not fun at all.