If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Adding a fuel-pressure check port
I occasionally want to measure fuel pressure on my Jeep WJ 2004 4.0L
I6. I am looking at installing a Schrader valve - the Jeep deosn't seem to have one. Can anyone provide suggestions on where to put a schrader valve and how? I was thinking of cutting the plastic hose close to where the fuel enters the fuel rail, inserting a 1/8" NPT brass T with a Schrader valve in the middle, and clamping with two screw-clamps. Any safety issues here? Is there a better long-term or safer solution? Also, occasionally, I would like to be able to check pressure while accelerating etc. Is it worth installing an electrical sending unit so I can connect a couple of cables and a gauge and stick them to the windshied when testing? Thank you. |
Ads |
#2
|
|||
|
|||
Adding a fuel-pressure check port
You could install the valve like you mention. They make solid
track/band worm clamps for the higher pressure lines something like the ones with the slots for threads. I don't really see the need though. Usually when a Jeep fuel pump up and quits, it up and quits. Unless you are having issues??? Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 (More Off Road album links at bottom of the view page) stilllearning wrote: > I occasionally want to measure fuel pressure on my Jeep WJ 2004 4.0L > I6. I am looking at installing a Schrader valve - the Jeep deosn't > seem to have one. Can anyone provide suggestions on where to put a > schrader valve and how? I was thinking of cutting the plastic hose > close to where the fuel enters the fuel rail, inserting a 1/8" NPT > brass T with a Schrader valve in the middle, and clamping with two > screw-clamps. Any safety issues here? Is there a better long-term or > safer solution? > > Also, occasionally, I would like to be able to check pressure while > accelerating etc. Is it worth installing an electrical sending unit so > I can connect a couple of cables and a gauge and stick them to the > windshied when testing? > > Thank you. > |
#3
|
|||
|
|||
Adding a fuel-pressure check port
What's a band worm clamp ? Is that what we call a Jubillee clip over here ?
Dave Milne, Scotland "Mike Romain" > wrote in message ng.com... > You could install the valve like you mention. They make solid > track/band worm clamps for the higher pressure lines something like the > ones with the slots for threads. > > I don't really see the need though. Usually when a Jeep fuel pump up > and quits, it up and quits. Unless you are having issues??? > > Mike > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > Canadian Off Road Trips Photos: Non members can still view! > Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 > (More Off Road album links at bottom of the view page) > > > stilllearning wrote: > > I occasionally want to measure fuel pressure on my Jeep WJ 2004 4.0L > > I6. I am looking at installing a Schrader valve - the Jeep deosn't > > seem to have one. Can anyone provide suggestions on where to put a > > schrader valve and how? I was thinking of cutting the plastic hose > > close to where the fuel enters the fuel rail, inserting a 1/8" NPT > > brass T with a Schrader valve in the middle, and clamping with two > > screw-clamps. Any safety issues here? Is there a better long-term or > > safer solution? > > > > Also, occasionally, I would like to be able to check pressure while > > accelerating etc. Is it worth installing an electrical sending unit so > > I can connect a couple of cables and a gauge and stick them to the > > windshied when testing? > > > > Thank you. > > |
#4
|
|||
|
|||
Adding a fuel-pressure check port
The normal 'hose clamps' that screw along a slotted track are called
worm clamps. They make them for higher pressure applications with a solid band stamped with threads. I either use one of those or I double the old style ones. Mike Dave Milne wrote: > What's a band worm clamp ? Is that what we call a Jubillee clip over here ? > > Dave Milne, Scotland > > "Mike Romain" > wrote in message > ng.com... >> You could install the valve like you mention. They make solid >> track/band worm clamps for the higher pressure lines something like the >> ones with the slots for threads. >> >> I don't really see the need though. Usually when a Jeep fuel pump up >> and quits, it up and quits. Unless you are having issues??? >> >> Mike >> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 >> Canadian Off Road Trips Photos: Non members can still view! >> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 >> (More Off Road album links at bottom of the view page) >> >> >> stilllearning wrote: >>> I occasionally want to measure fuel pressure on my Jeep WJ 2004 4.0L >>> I6. I am looking at installing a Schrader valve - the Jeep deosn't >>> seem to have one. Can anyone provide suggestions on where to put a >>> schrader valve and how? I was thinking of cutting the plastic hose >>> close to where the fuel enters the fuel rail, inserting a 1/8" NPT >>> brass T with a Schrader valve in the middle, and clamping with two >>> screw-clamps. Any safety issues here? Is there a better long-term or >>> safer solution? >>> >>> Also, occasionally, I would like to be able to check pressure while >>> accelerating etc. Is it worth installing an electrical sending unit so >>> I can connect a couple of cables and a gauge and stick them to the >>> windshied when testing? >>> >>> Thank you. >>> > > |
#5
|
|||
|
|||
Adding a fuel-pressure check port
Rather than creating a potential leak problem, you'd be better off
buying or making an adapter you could insert between the line and the rail to check pressure. You don't need a permanent test port. On Sun, 03 Jun 2007 10:38:25 -0700, stilllearning > wrote: >I occasionally want to measure fuel pressure on my Jeep WJ 2004 4.0L >I6. I am looking at installing a Schrader valve - the Jeep deosn't >seem to have one. Can anyone provide suggestions on where to put a >schrader valve and how? I was thinking of cutting the plastic hose >close to where the fuel enters the fuel rail, inserting a 1/8" NPT >brass T with a Schrader valve in the middle, and clamping with two >screw-clamps. Any safety issues here? Is there a better long-term or >safer solution? > >Also, occasionally, I would like to be able to check pressure while >accelerating etc. Is it worth installing an electrical sending unit so >I can connect a couple of cables and a gauge and stick them to the >windshied when testing? > >Thank you. |
#6
|
|||
|
|||
Adding a fuel-pressure check port
On Jun 3, 5:38 pm, bllsht > wrote:
> Rather than creating a potential leak problem, you'd be better off > buying or making an adapter you could insert between the line and the > rail to check pressure. You don't need a permanent test port. > > On Sun, 03 Jun 2007 10:38:25 -0700, stilllearning > > wrote: > > > > >I occasionally want to measure fuel pressure on my Jeep WJ 2004 4.0L > >I6. I am looking at installing a Schrader valve - the Jeep deosn't > >seem to have one. Can anyone provide suggestions on where to put a > >schrader valve and how? I was thinking of cutting the plastic hose > >close to where the fuel enters the fuel rail, inserting a 1/8" NPT > >brass T with a Schrader valve in the middle, and clamping with two > >screw-clamps. Any safety issues here? Is there a better long-term or > >safer solution? > > >Also, occasionally, I would like to be able to check pressure while > >accelerating etc. Is it worth installing an electrical sending unit so > >I can connect a couple of cables and a gauge and stick them to the > >windshied when testing? > > >Thank you.- Hide quoted text - > > - Show quoted text - Here is the connector at the fuel rail: http://new.photos.yahoo.com/shahswim...804411800994/0 Is there an adapter available? |
#7
|
|||
|
|||
Adding a fuel-pressure check port
On Jun 3, 1:50 pm, Mike Romain > wrote:
> You could install the valve like you mention. They make solid > track/band worm clamps for the higher pressure lines something like the > ones with the slots for threads. > > I don't really see the need though. Usually when a Jeep fuel pump up > and quits, it up and quits. Unless you are having issues??? > > Mike > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > Canadian Off Road Trips Photos: Non members can still view! > Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590 > (More Off Road album links at bottom of the view page) > > > > stilllearning wrote: > > I occasionally want to measure fuel pressure on my Jeep WJ 2004 4.0L > > I6. I am looking at installing a Schrader valve - the Jeep deosn't > > seem to have one. Can anyone provide suggestions on where to put a > > schrader valve and how? I was thinking of cutting the plastic hose > > close to where the fuel enters the fuel rail, inserting a 1/8" NPT > > brass T with a Schrader valve in the middle, and clamping with two > > screw-clamps. Any safety issues here? Is there a better long-term or > > safer solution? > > > Also, occasionally, I would like to be able to check pressure while > > accelerating etc. Is it worth installing an electrical sending unit so > > I can connect a couple of cables and a gauge and stick them to the > > windshied when testing? > > > Thank you.- Hide quoted text - > > - Show quoted text - I do not have any problems; I was thinking of putting in a fuel port as a pro-active measure. I would like to study the pressure patterns at idle, during winter, while accelerating and such, so that when a problem occurs, I am somewhat prepared. The problem could be fuel pump, fuel regulator, leaks and such. Moreover, when the car stalls, the problem could or could not be fuel pressure related. My last car, a 1994 Ford Taurus, was running pretty good until 198K miles when it stalled on the road, in 2004. I thought the car is old and would not be worth towing and taking to a mechanic. The car did eventually start but did not have power. I replaced it with my current Jeep. I wish I had studied it's fuel and intake systems; I get a feeling there was a relatively minor problem. |
#8
|
|||
|
|||
Adding a fuel-pressure check port
stilllearning wrote:
> Here is the connector at the fuel rail: > > http://new.photos.yahoo.com/shahswim...804411800994/0 > > Is there an adapter available? Only as part of a fuel pressure test kit. The problem is getting the fiddly metal bit that is on the rail. I'd probably just splice in a test port with a spare hole for any future pressure gauge. My only concern would be putting excess weight on the quick connector. I've got a setup that does just that and if I'm not careful about the excess weight it can cause a drip in the wintertime. However, I've got a bit more connected to the rail than you would. http://revbeergoggles.com/regulator-detail.jpg That's a 75 psi regulator by the way. -- DougW |
#9
|
|||
|
|||
Adding a fuel-pressure check port
stilllearning wrote:
> I do not have any problems; I was thinking of putting in a fuel port > as a pro-active measure. I would like to study the pressure patterns > at idle, during winter, while accelerating and such, so that when a > problem occurs, I am somewhat prepared. The problem could be fuel > pump, fuel regulator, leaks and such. Moreover, when the car stalls, > the problem could or could not be fuel pressure related. Ok.. this is what your going to see. ign on -- idealy a few psi from the last shutdown followed by a run up to operating psi start/idle -- basic static pressure running -- basic static pressure wide open -- a couple more psi (depends on the year) shutdown -- a slow but steady build as fuel in the rail expands due to heat. Followed by a return to normal and a very slow decrease Nothing apart from a very sensitive electronic sensor and scope could detect injector firing. About the only things of interest are 1) lower fuel pressure on acceleration - clogged fuel filter - bad pressure regulator (which for your model is in the pump) - worn pump 2) slow decrease in pressure with engine off - leaking fuel system or injector Your probably better off buying a good scantool and learning how to use it. Most of the stuff is monitored by the compooter these days. -- -- DougW -- 93 ZJ 4.0 http://revbeergoggles.com HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors Banks Header - and BEER, in the fridge! |
#10
|
|||
|
|||
Adding a fuel-pressure check port
Are you certain there is no test port? Maybe they did away with them, but
there is one on my '00 Wrangler with the same engine. It's on the fuel rail. "stilllearning" > wrote in message oups.com... > On Jun 3, 5:38 pm, bllsht > wrote: >> Rather than creating a potential leak problem, you'd be better off >> buying or making an adapter you could insert between the line and the >> rail to check pressure. You don't need a permanent test port. >> >> On Sun, 03 Jun 2007 10:38:25 -0700, stilllearning > >> wrote: >> >> >> >> >I occasionally want to measure fuel pressure on my Jeep WJ 2004 4.0L >> >I6. I am looking at installing a Schrader valve - the Jeep deosn't >> >seem to have one. Can anyone provide suggestions on where to put a >> >schrader valve and how? I was thinking of cutting the plastic hose >> >close to where the fuel enters the fuel rail, inserting a 1/8" NPT >> >brass T with a Schrader valve in the middle, and clamping with two >> >screw-clamps. Any safety issues here? Is there a better long-term or >> >safer solution? >> >> >Also, occasionally, I would like to be able to check pressure while >> >accelerating etc. Is it worth installing an electrical sending unit so >> >I can connect a couple of cables and a gauge and stick them to the >> >windshied when testing? >> >> >Thank you.- Hide quoted text - >> >> - Show quoted text - > > Here is the connector at the fuel rail: > > http://new.photos.yahoo.com/shahswim...804411800994/0 > > Is there an adapter available? > |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
What is the proper way to test Fuel Pressure Regulator/fuel pump | daveck2 | BMW | 1 | March 28th 06 04:54 AM |
Adding ACETONE to your fuel? | Pantharen | Simulators | 7 | January 25th 06 09:23 PM |
checking air conditioning pressure in a '94 Tercel fixes A/C without adding refrigerant | Ryan Meier | Technology | 0 | July 4th 05 08:08 AM |
low pressure port eagle summit 1991 | truckerjim | General | 0 | July 1st 05 03:39 PM |
Fuel tank leak - fuel pump cover or pressure release valve? | zarro | Jeep | 5 | March 11th 05 08:15 PM |