Hello all cb7 tuners! I'm posting this because I had so much trouble making this work for me that I would save you the head ache! Plus, this method is much cheaper than an electrical guage from Auto Meter, and a little cheaper than a mechanical guage from Auto Meter.
This comes in [I]very[I] handy if you have an adjustable fule pressure regulator.
Here's what you will need:
1. A fule pressure tester (got mine at Advance Autoparts. Around $36...)
2. A 12 X 1.25 mm bolt approx. 2" long and a nut to fit it
3. A hack saw, saws all, or anything that can cut through a bolt (I used a dye grinder with a cutting wheel...)
4. A drill and bits
5. A set of metric wrenches (open ended) MUST HAVE A 17MM!
6. Approx. a foot of 3/8 rubber hose or braided stainless steel line
7. Two screw down type hose clamps
8. A brass fitting that is male 1/8 pipe thread on one end and a male fitting on the other end that will fit snuggly inside the 3/8 hose
9. A 1/8 male pipe thread cap fitting
10. Thread seal tape
11. ALOT OF PATIENCE!!!
First, locate the fule rail service port on the top right hand side of the fule rail.
It will look like a litte bolt sitting on top of a bigger bolt. You will want to remove this. The larger bolt is a 17mm, and the one you want to take out. Take your 12 X 1.25mm bolt and cut the head off the bolt. Now, take your drill and a bit that's not to big, yet not to small (if I knew the size of the bit, I'd tell you, but I forgot!
) and drill all the way through the length of the bolt from end to end. This is where the patience comes in handy! 
Once you do that, take your fule pressure tester and remove the rubber hose with the brass fitting on the end from the "T" style fitting. Next remove the bleeder valve from the "T" fitting. Now take you male 1/8 pipe thread cap fitting and wrap the end with thread seal tape, then cap off the opening where the bleeder valve was. Take your male 1/8 on one end fitting and on the 1/8 end, wrap it in thread seal tape. Screw that end into the "T" fitting where the rubber hose was, right below the guage.
Remember the other end of that fitting needs to fit snug into your 3/8 rubber hose. Now put one end of your 3/8 hose over that end of the fitting, and secure it with one of your hose clamps. Take you newly modifided bolt with no head and a hole drilled through it, and making sure you use the washer that was under the factory bolt on the service port, put the bolt through that washer and then into the service port on the fule rail. Now, lock that bolt down with the nut you bought to fit the 12 X 1.25mm bolt that you just put into the fule rail service port. Finaly, connect the other end of your 3/8 hose to your homeade fitting in the service port and secure it with the other hose clamp. Your done!
Now go start the engine and watch the guage. Your stock fule pressure should read between 30 and 38 psi. (mine was right at 38 psi...) If you have an adjustable pressure regulator, make your adjustments while watching the guage. As someone on this site told me, (forgive me for not remembering who right now. love...) it should be safe to increase your fule pressure 10 to 15% without making any other adjustments. (10% of 38 psi is 3.8. add 3.8 to 38 and you get 41.8 psi, so I set mine for 42 psi...)
An adjustable fule pressure regulator will help improve your air to fule mixture for those of you that have a high flow air intake and or a high flow exhaust system.
And you must have a guage setup to monitor fule pressure. I hope this D.I.Y. is helpful! Be safe, and happy tuneing!
This comes in [I]very[I] handy if you have an adjustable fule pressure regulator.
Here's what you will need:
1. A fule pressure tester (got mine at Advance Autoparts. Around $36...)
2. A 12 X 1.25 mm bolt approx. 2" long and a nut to fit it
3. A hack saw, saws all, or anything that can cut through a bolt (I used a dye grinder with a cutting wheel...)
4. A drill and bits
5. A set of metric wrenches (open ended) MUST HAVE A 17MM!
6. Approx. a foot of 3/8 rubber hose or braided stainless steel line
7. Two screw down type hose clamps
8. A brass fitting that is male 1/8 pipe thread on one end and a male fitting on the other end that will fit snuggly inside the 3/8 hose
9. A 1/8 male pipe thread cap fitting
10. Thread seal tape
11. ALOT OF PATIENCE!!!
First, locate the fule rail service port on the top right hand side of the fule rail.
It will look like a litte bolt sitting on top of a bigger bolt. You will want to remove this. The larger bolt is a 17mm, and the one you want to take out. Take your 12 X 1.25mm bolt and cut the head off the bolt. Now, take your drill and a bit that's not to big, yet not to small (if I knew the size of the bit, I'd tell you, but I forgot!
) and drill all the way through the length of the bolt from end to end. This is where the patience comes in handy! Once you do that, take your fule pressure tester and remove the rubber hose with the brass fitting on the end from the "T" style fitting. Next remove the bleeder valve from the "T" fitting. Now take you male 1/8 pipe thread cap fitting and wrap the end with thread seal tape, then cap off the opening where the bleeder valve was. Take your male 1/8 on one end fitting and on the 1/8 end, wrap it in thread seal tape. Screw that end into the "T" fitting where the rubber hose was, right below the guage.Remember the other end of that fitting needs to fit snug into your 3/8 rubber hose. Now put one end of your 3/8 hose over that end of the fitting, and secure it with one of your hose clamps. Take you newly modifided bolt with no head and a hole drilled through it, and making sure you use the washer that was under the factory bolt on the service port, put the bolt through that washer and then into the service port on the fule rail. Now, lock that bolt down with the nut you bought to fit the 12 X 1.25mm bolt that you just put into the fule rail service port. Finaly, connect the other end of your 3/8 hose to your homeade fitting in the service port and secure it with the other hose clamp. Your done!
Now go start the engine and watch the guage. Your stock fule pressure should read between 30 and 38 psi. (mine was right at 38 psi...) If you have an adjustable pressure regulator, make your adjustments while watching the guage. As someone on this site told me, (forgive me for not remembering who right now. love...) it should be safe to increase your fule pressure 10 to 15% without making any other adjustments. (10% of 38 psi is 3.8. add 3.8 to 38 and you get 41.8 psi, so I set mine for 42 psi...)
An adjustable fule pressure regulator will help improve your air to fule mixture for those of you that have a high flow air intake and or a high flow exhaust system.
And you must have a guage setup to monitor fule pressure. I hope this D.I.Y. is helpful! Be safe, and happy tuneing!
cool butt where r the dam pics?
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