Fuel Pressure Regulator

[Ldub]

Nice diagram, where did you pull that from?

I gave up on it for now going to try tomorrow maybe the pb blaster will soak in more by that time.

I almost busted the allen wrench trying to lossen it.

For the diagram, check the right sidebar under "downloads".

Go to Sears & get a set of 3/8" drive metric allen wrenches (that fit on a ratchet) if you haven't already...they work tons better than the cheapo L shaped ones.

[uncle_asa]

Nice diagram, where did you pull that from?

It is from Isuzu EPC which is normally used in the shops to identify part. You can get a copy of it from (4 files):
http://rapidshare.com/files/17016667/howto.txt
http://rapidshare.com/files/3522739/..._epc.part3.rar
http://rapidshare.com/files/3511727/..._epc.part2.rar
http://rapidshare.com/files/3494986/..._epc.part1.exe

Other very usefull documents:
Workshop manual (the best source to know how to unscrew something, I prefer it to the s/w from Tone): http://rapidshare.com/files/17008740/IV00.01.pdf
Electrical Troubleshooting Manual (the one that was distributed by nfpgasmask in paper form, scanned): http://rapidshare.com/files/17003942/ETM_VX99.pdf

Some other Isuzu related software/documents: http://rapidshare.com/users/OSBSEO

[rowhard]

Hey Uncle, I sent the workshop and electrical manual you sent me to Moncha for uploading here. It's under downloads/manuals. What are the other documents you have listed here?

[uncle_asa]

Hey Uncle, I sent the workshop and electrical manual you sent me to Moncha for uploading here. It's under downloads/manuals. What are the other documents you have listed here?

I'm not sure about US, but in Russia we have ability to request parts by factory part number, so Isuzu Electronic Parts Catalog (EPC) is very usefull here. And also it gives you a tip on whether some parts could be bought splitted or only assembled (gaskets, motors, etc).
Probably there no more other manuals related to VX directly, but there Workshop Manuals for Troopers and Rodeo/Amigo. So, if someone wish to install manual hubs, for example, he might get a tip on how that done on Trooper

[JHarris1385]

Update: Could not for anything get those bolts off.

SO instead I decided to paint the honey comb on my grill white. And my cladding screws silver. Pics comin soon.

Any suggestions of what to do with those bolts? Or how else to get that FPR out?

[Knigh7s]

Craftsman 15 in. Flex Handle 44201 - Cant imagine life with out it!



Hex Bits - These are several more examples. Checkers or Autozone carry them as well for pretty cheap.

[WormGod]

Pretty easy if you have tool to remove internal ring grommet (??? see pic below ) something like that:

I picked up a set of these at Advanced Auto before I started my S/C install. $14 and comes with a couple interchangable head sizes. Works great for snap rings like the one used on the fuel regulator.

[Jolly Roger VX'er]

I picked up a set of these at Advanced Auto before I started my S/C install. $14 and comes with a couple interchangable head sizes. Works great for snap rings like the one used on the fuel regulator.

That's where I bought mine too that I used to replace my fuel pressure regulator...also used them on the snap-ring inside the front hubs during wheel bearing repack!

[JHarris1385]

FINALLY REPLACED MY FPR.....

That 340 bolt on the back of the chamber is a pain in the *****. I wonder how anyone else got that loose. ??? Jolly?

Anyways. I average 13.6 mpg prior to this change and hard start ups (cranking the key while depressing the gas pedal for about 7 seconds each time), misfire codes daily and lots of gas smelling exhaust. But remember I am lifted and running 20'' chrome rims or 265-75 tires otherwise.

After replacing it. I was crusing at 60ish mph and saw on my scan gauge for the first time instant mpg over - 20 -. Also, it has fired up each time like it should with no gas pedal depression or exhaust. And I drove all day without a misfire code.

-- I would advise everyone to at least look at and clean your FPR even if you dont have the symptoms I do. Mine was very dirty and full of debris.

[IndianaVX]

John,
hey, good to hear you got it replaced! you mentioned cleaning?? do you think its a cleanable part? and what did a new fpr cost you??
just curious.....all these post about better mileage lately is encouraging....i know it will never be great mileage in a vx, but better is always good!!
thanks
david

[JHarris1385]

At this point of driving to work with hwy and city driving included in the excursion. I would at least say an increase of 3-4mpg for me. I would hope to see this tank reach about 17.3ish. (Once again Im lifted running heave 20'' rims with a 31ish inch tire)

I would think it could be cleaned with some fuel treatment on a rag. There was also some debris on top of the screen. It cost $70 but well worth it over time. I used to not see 230 miles a tank. Should have taken pictures. (started about about 8pm last night in the driveway not the garage, it started to POUR down about a half hour into it.) Woke up a little early for work and was in a rush to put the VX back together).

Here is the link for the one I bought. Enlarge the picture of the part the mesh screen on mine was dirty and sort of clogged and there was debris on top of it.
http://www.drivewerks.com/cgi-bin/pp...sure+Regulator

[spaceCADETzoom]

Oh sweet Baby Jesus.

I cannot for the life of me get that dang bolt out. THe one facing the cabin. NOthing I have fits in the area for me to ratchet. I have an adjustablke head one I just bought...no dice. Is taht Craftsman ratchet above thinner in some way than the average ratchet?

I tried everything from a horisonztal screwdriver/ratvhet thing (ratchet is too weak...the thing splits and won
t turn tight bolt)...adjustable head ratchet...to trying to use pliers to just turn a hex bit. NOthing works...the space to the wall is too short to get anything in...and the bolt itself is too tight!

[johnnyapollo]

FYI that ETM manual scan on rapidshare is the 99 manual - there's a separate 00 manual that covers the differences in the climate control. From what I can tell the rest of the manual is the same.

-- John

[Ldub]

John,
hey, good to hear you got it replaced! you mentioned cleaning?? do you think its a cleanable part? and what did a new fpr cost you??
just curious.....all these post about better mileage lately is encouraging....i know it will never be great mileage in a vx, but better is always good!!
thanks
david

Just a FYI on mileage...on the run up to the Gilbert MN meet, I averaged 17.5.
(factoring in 11% difference in tire dia.)It was a70-75 deg. day & the average speed was 60-65. I'm lifted, s/c'd, & have a MUCH heavier than stock tire/wheel combination. Don't know if it helped much, but I had just cleaned my K&N cone & installed an oiled foam pre cleaner.

[JHarris1385]

Oh sweet Baby Jesus.

I cannot for the life of me get that dang bolt out. THe one facing the cabin. NOthing I have fits in the area for me to ratchet. I have an adjustablke head one I just bought...no dice. Is taht Craftsman ratchet above thinner in some way than the average ratchet?

I tried everything from a horisonztal screwdriver/ratvhet thing (ratchet is too weak...the thing splits and won
t turn tight bolt)...adjustable head ratchet...to trying to use pliers to just turn a hex bit. NOthing works...the space to the wall is too short to get anything in...and the bolt itself is too tight!

What i did is used a cheap L allen wrench and put a pipe over it.