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Author Topic: TJ fuel pressure??  (Read 911 times)

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Offline Hunter02

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TJ fuel pressure??
« on: July 12, 2016, 12:29:18 AM »
Gentlemen, is there a fitting where I can tap in to measure fuel pressure coming from the fuel pump? If can, can you give the location and maybe a picture? Neither of my manuals show one but I figure there must be a way.
Thanks,  Hunter
'98 TJ
2.5L Auto
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Offline Jeffy

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Re: TJ fuel pressure??
« Reply #1 on: July 12, 2016, 12:57:51 PM »
There's a special took for that.  Basically you're going to run an inline adapter to the fuel line.



I think you should be able to use a universal fuel pressure gauge kit too.
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Offline VA_YJ

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Re: TJ fuel pressure??
« Reply #2 on: July 15, 2016, 11:33:21 AM »
There should be a Schrader fitting (looks like a bicycle tire valve) on your fuel rail (pipe on top of motor).  You hook the pressure gauge to the fitting.  It will spit some fuel when you connect, so be careful not to start a fire.
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95 YJ, 31 BFG ATs, 4.0 TB & spacer, Banks header, DynoMax CAT back, 19# inj, AEM CAI, 20 gal mod, Optima yellow
98 TJ, 35 BFG Krawlers, 4.0 liter, ax15, atlas 5:1, armor, Super 88 (under construction)
96 XJ Cheep Cherokee, 33s, 4.0 liter, AW4, future project
89 Waggy, 360 V8 727 dana 44s, it runs

Offline Jeffy

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Re: TJ fuel pressure??
« Reply #3 on: July 15, 2016, 06:15:44 PM »
Quote from: VA_YJ on July 15, 2016, 11:33:21 AM
There should be a Schrader fitting (looks like a bicycle tire valve) on your fuel rail (pipe on top of motor).  You hook the pressure gauge to the fitting.  It will spit some fuel when you connect, so be careful not to start a fire.
They got rid of that on the TJ.
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Youtube Channel: https://www.youtube.com/channel/UCZNlr60GXH5OlKIFrT7P6mg
My Jeep: http://4bangerjp.com/forums/index.php?topic=2783.0
"If the motor car were invented today, there is absolutely no way that any government in the world would let normal members of the public drive one."

Offline Hunter02

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Re: TJ fuel pressure??
« Reply #4 on: July 15, 2016, 09:37:21 PM »
They got rid of that on the TJ.

That's a shame. That's what I had been hoping for.
Hunter
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Offline VA_YJ

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Re: TJ fuel pressure??
« Reply #5 on: July 18, 2016, 12:50:41 PM »
Hunter, sorry for the bad info.  My 1998 TJ (4.0 liter) has the Schrader valve like my 1995 YJ (2.5 liter).
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95 YJ, 31 BFG ATs, 4.0 TB & spacer, Banks header, DynoMax CAT back, 19# inj, AEM CAI, 20 gal mod, Optima yellow
98 TJ, 35 BFG Krawlers, 4.0 liter, ax15, atlas 5:1, armor, Super 88 (under construction)
96 XJ Cheep Cherokee, 33s, 4.0 liter, AW4, future project
89 Waggy, 360 V8 727 dana 44s, it runs
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