hI guys (and gals) :) I have a 2000 tj vr-x and i fitted a fuel press reg not so long ago , does anyone know if this would make it harder to start i.e:takes longer to turn over and start up. I have checked all fittings there is no fuel leaks was thinking it could be vacum leak as when i turn it off pressure drops right off , any help would be appprecated;)


The cars done 150,000km's

Could be the regulator its self or an issue with the fuel pump. or even leaky injectors Definetly look out for leaks or fuel smell around the vehicle. Should be holding pressure when you turn it off initially.

Regards

PS welcome to AMC ..

thanks what sort or probs with fuel pump don't want to replace if i don't have to. can't smell any leaks anywhere , the reg was from e-bay:redface: but it works great when running mite have to put up with it:rant:

it aint one with a little dial on the front is it

Yes why:confused:

lol exact same as mine. what pressure u running it at. i had the same problem so i cranked mine up a smidgen and all is good

I've tried it at 30 psi , 40 psi and 50 psi and the same thing happens it's ok when it's warmed up and not switched off for to long:confused:

did u replace yur stock regulator ??

yeh still got it in the shed:)

try turning yur key to the on position so that the fuel gets to pressure then kick it over. i know when mines ready i can hear the fuel pump get it up to pressure

Mine did that abit when the base pressure was down around 30 odd PSI, but you said you've tried bumping it up with no luck.

It seems like they do release the fuel pressure back into the fuel return after a while, which will leave your fuel rail low on pressure when you start up. As long as it's holding the required pressure while the cars running - it shouldn't do any damage, but I'd get onto the person/place you purchased it from and see if they'll exchange it - could be a sign of a fault. By all accounts the failure rate on them is not that low.

try turning yur key to the on position so that the fuel gets to pressure then kick it over. i know when mines ready i can hear the fuel pump get it up to pressure


how long does yours take to get press up.

i just got my FPR, on the box its called a "fuel injection high performance regulator". It doesnt have a gauge which i thought it would so not sure how it works as yet. I'll go visit my mechanic in the morning, maybe he can share some light on how it works and to install it

how long does yours take to get press up.
its like 3 seconds or so ive never actually timed it.

How much are these fuel presure regulaters and are they easy to fit and do they make a difference in performance

Yes why:confused:

ha man i actually brought one of these babys of ebay and was wondering if you could take a pic of the engine bay or somewhere were i could spot were the area is so i can fit it did you haave troubles fitting

http://i2.photobucket.com/albums/y5/mehhh/Intake.jpg


ok u can see mine sitting on the side of my intake manifold

I fitted it to the side of the air flow meter one of the 4 nuts that connects it to filter housing

I fitted it to the side of the air flow meter one of the 4 nuts that connects it to filter housing

thanks mate thats helps. Whats that yellow hose and how many hoses did you have to put on the regulater. OH and did u find a difference in the performnce with the regulater on

Likeashot, could the problem lie with the battery.

Cold weather tends to kill batteries, and the Mitsubishi OEM battery tends to become unreliable at first (ie, car stalls, car is hard to start etc) until actual death.

Likeashot, could the problem lie with the battery.

Cold weather tends to kill batteries, and the Mitsubishi OEM battery tends to become unreliable at first (ie, car stalls, car is hard to start etc) until actual death.

The man has a point. I've experienced what you are describing on two occasions. The first was from the FPR being set too low and was fixed by bumping up the baseline pressure. The second was the battery, but I thought it was the FPR until one day my car wouldn't turn over at all.

I fitted it to the side of the air flow meter one of the 4 nuts that connects it to filter housing

k ive just got the fuel regulater in the mail ive fitted one hose likeashot picture hes got a yellow hose aswell and i dont now if thats got to go on or not i got a pic for ya the hose ive attached and the other one i havent. And i dont now how to set PSI thanks again.


http://putfile.com/pic.php?pic=main/7/19221410026.jpg&s=f10

k ive just got the fuel regulater in the mail ive fitted one hose likeashot picture hes got a yellow hose aswell and i dont now if thats got to go on or not i got a pic for ya the hose ive attached and the other one i havent. And i dont now how to set PSI thanks again.

ok the yellow hose is vacum,here's what i did to fit mine.
1. find your factory regulator disconnect small vacum hose.
2. relieve fuel pressure by pulling fuel pump fuse then start car, run till it runs out of fuel.
3. undo clamp holding fuel return hose and disconnect hose fuel will dribble out.
4. undo two bolts holding reg in place and remove reg.
5. if you have one like mine the adapter won't fit (see first two photos).
6. go to wreckers and get the pipe fitting that joins the two fuel rails (i presume yours is v6).
7. the fitting has two adapters on it you want the one with offset bolt holes.
8. cut the pipe 2 to 3cm from the bend so you have an adapter with a right angle bit of pipe sticking out of it.
9. clean up cut and flare it slightly not too much.
10. fit it where old reg was.
11. in the photo i posted orginally the hose you see at the front is the return line if you put your reg in the same place as mine it will reach (agian i presume yours is same as mine:redface: ) then you need to run a hose from adapter to the other hose fitting.
12. the yellow hose runs from reg to inlet manifold(see third photo).
13. make sure all fittings are secure and so is reg.
14. start her up (it'll take a few turns to get fuel press back up).
15. undo locknut and screw thread in or out to get correct pressure (do this with motor running ,set to 40 psi) then tighten locknut.
16. ok take it for a blat round the block and then check for leaks.

if it's all ok you should be good, sorry this was so long winded but i hope it helps ,by the way i'm NOT a mechanic so don't hold me to anything i just said.:)

Likeashot, could the problem lie with the battery.

Cold weather tends to kill batteries, and the Mitsubishi OEM battery tends to become unreliable at first (ie, car stalls, car is hard to start etc) until actual death.


oh my god my wife just said the same thing (i knew i married her for a reason:bowrofl: ) i think its been 2 or 3 years since i changed it last i knew this would cost me money:rant:
oh well you get that.
thanks dave

oh my god my wife just said the same thing (i knew i married her for a reason:bowrofl: ) i think its been 2 or 3 years since i changed it last i knew this would cost me money:rant:
oh well you get that.
thanks dave


well atleast u can say "but honey it was u'r idea to change the battery"

well atleast u can say "but honey it was u'r idea to change the battery"


i like the way you think:badgrin:

i like the way you think:badgrin:

as do i :D

ok the one i got doesnt have a gauge. is this going to be a problem? any way of knowing how to set it right?

it depends if its adjustable or not,if its not you don't need one it will be set already,but if it is there should be a place where you can screw one in ,i think:roll:

Do these fuel regulaters make any difference in performance?

Do these fuel regulaters make any difference in performance?

yes i can feel a difference when the pressures up between 40 and 50 psi,but consumption goes up as well, "u get that on the big jobs";)

The man has a point. I've experienced what you are describing on two occasions. The first was from the FPR being set too low and was fixed by bumping up the baseline pressure. The second was the battery, but I thought it was the FPR until one day my car wouldn't turn over at all.

hi guys i've checked battery and it's fine it's only two years old and super heavy duty not factory one,so there goes that idea:cry: