Search | Car Forums | Gallery | Articles | Helper | AF 350Z | IgorSushko.com | Corporate |
| Latest | 0 Rplys |
|
Show Printable Version | Email this Page | Subscribe to this Thread |
|
Thread Tools |
10-22-2007, 12:43 PM | #1 | |
AF Newbie
Join Date: Sep 2004
Location: Columbus, Ohio
Posts: 34
Thanks: 0
Thanked 0 Times in 0 Posts
|
Testing fuel pressure regulator
The fuel pressure on my 94 GA V6 was only 28 psi at idle with or without vacuum hose plugged in. So I blamed the pressure regulator since fuel pressure was not changing with vacuum pressure, and took it out. Before I put a new one, I made a tester. This regulator opens at about 44 psi and it seems work fine. Since I do not have any vacuum pump, vacuum test was not done. Is it fine to assume the regulator is good?
|
|
10-22-2007, 06:19 PM | #2 | |
out saving the world
Join Date: Jul 2005
Location: Yourtown, Indiana
Posts: 10,707
Thanks: 8
Thanked 18 Times in 18 Posts
|
Re: Testing fuel pressure regulator
if you have 28 psi when idling then I'd say the FPR is bad.
So i'd assume your tester is fualty.
__________________
1999 Grand Am SS 3.4 OHV |
|
10-22-2007, 07:27 PM | #3 | |
AF Newbie
Thread starter
Join Date: Sep 2004
Location: Columbus, Ohio
Posts: 34
Thanks: 0
Thanked 0 Times in 0 Posts
|
Re: Testing fuel pressure regulator
My tester was confirmed working with a new FPR. The new one also opened at about 43 psi with my tester.
|
|
10-23-2007, 09:46 AM | #4 | |
out saving the world
Join Date: Jul 2005
Location: Yourtown, Indiana
Posts: 10,707
Thanks: 8
Thanked 18 Times in 18 Posts
|
Re: Testing fuel pressure regulator
If you only had 28 psi with the FPR on the car and with your invention read 44 psi then I'd assume your reader is wong.
So did this replacement of the FPR solve your issue(s) ??
__________________
1999 Grand Am SS 3.4 OHV |
|
10-23-2007, 10:54 AM | #5 | |
AF Newbie
Thread starter
Join Date: Sep 2004
Location: Columbus, Ohio
Posts: 34
Thanks: 0
Thanked 0 Times in 0 Posts
|
Re: Testing fuel pressure regulator
I made both fuel pressure and regulator testers by myself. Both testers were calibrated with high quality p-gauge. When the fuel pressure gauge was used on my Windstar, it work perfect. For the regulator tester, I checked the opening pressure of my FPR and a brand new FPR. Both showed the onset pressure of 44 or 43 psi. I guessed my FPR is fine and put it back. My next step will be checking injectors or fuel pump.
|
|
10-23-2007, 05:29 PM | #6 | |
out saving the world
Join Date: Jul 2005
Location: Yourtown, Indiana
Posts: 10,707
Thanks: 8
Thanked 18 Times in 18 Posts
|
Re: Testing fuel pressure regulator
So your tester can test both fuel pressure and vacum
__________________
1999 Grand Am SS 3.4 OHV |
|
|
POST REPLY TO THIS THREAD |
|
|