 
     |
| What after market Fuel Pressure Regulator to buy for a Series III 3800SC (Page 1/4) |
|
JohnWPB
|
OCT 13, 05:29 PM
|
|
Seems that the fuel pressure regulator that I purchased, has a blown diaphragm. Allowing fuel to get sucked through the vacuum line according to a mechanic I had here.
I need to get one ordered, and delivered ASAP . I need to get it installed before he returns to continue diagnostics. The Series III is a return-less fuel system.
I could definitely use some recommendations!
|
|
|
Domtech
|
OCT 13, 05:59 PM
|
|
You could keep it simple and just cut one out of a series 2 rail. There are a lot of pictures from people who have done this sort of thing.
|
|
|
|
JohnWPB
|
OCT 13, 06:36 PM
|
|
| quote | Originally posted by Domtech:
You could keep it simple and just cut one out of a series 2 rail. There are a lot of pictures from people who have done this sort of thing.
|
|
I was looking more for a new after market, that is adjustable. Also, the Series II is setup for a return line, can that be adapted?
|
|
|
|
Domtech
|
OCT 13, 07:16 PM
|
|
There is still a return line with a "return-less" system, its just by the filter/tank. Isn't that how yours is set up?
Adjustable isn't that necessary if you are using a factory regulator.
You would set it up just like in the picture, fuel comes out of the tank to the filter, from the filter to the regulator, and from the regulator back to the tank, with a tee before the regulator to feed the rail.
|
|
|
|
olejoedad
|
OCT 14, 08:05 AM
|
|
There is no need for an adjustable FPR, unless you just want the bling-bling factor.
That said, Summit and JEGS both sell quality products.
|
|
|
|
VanGTP5000
|
OCT 14, 12:46 PM
|
|
|
|
|
JohnWPB
|
OCT 14, 02:46 PM
|
|
Thank you for the links, as, believe it or not, I actually knew a lot of people sold "quality products"  The first link looked promising, but I am still not sure what I need to get. Everything I seem to find mentions a return line, and I do not know if that can be bipassed. As mentioned, I have a series III and have a single fuel line coming from the tank. I would like to install a regulator that will use just this single stainless steel line, instead of the added time and effort to drop the tank and hook a second line up to the tank.
| quote | Originally posted by olejoedad:
Summit and JEGS both sell quality products. |
|
First Joe, you have probably been one of the most helpful people during my swap. I thank you for pointing me in the right direction, and offering advice. In this instance, not so much
I am not looking to be "spoon fed", however I am not a mechanic, and could use some specific advice.
It would be the same as if someone told me that that they wanted to upgrade the memory on their computer, and I told them Amazon and Newegg " both sell quality products".
To purchase memory, you would need to know if it is DDR2, DDR3, DDR4, the amount of memory on each DIMM, the number of dimm slots, and the maximum supported memory by your motherboard. Then factor in the latency timing, if its overclocable or not (and then if your motherboard supports overclocking the memory timings or not), plus the latency timing that your BIOS can support. Also if you wanted active cooling, RGB support, and the height of the DIMM risers to be able to clear the cooling tower depending on motherboard placement, and if they are using water or air cooling. Just a blank link to a place that sells memory would do you no good.[This message has been edited by JohnWPB (edited 10-14-2017).]
|
|
|
|
Domtech
|
OCT 14, 03:36 PM
|
|
I think we might have discovered the problem in that case. True "return-less" systems have the regulator in the tank, and dump the excess pressure there.
If you really have no return line from the regulator to the tank then you have been deadheading a pump that wasn't meant to be used like that.
What regulator did you have?
|
|
|
|
JohnWPB
|
OCT 14, 04:12 PM
|
|
I had installed this one from Amazon.
It has a single input, single output, and the port for the vacuum line. There is NO hookup for a return line, so in my case that was perfect.
It shows 52 PSI on the gauge when the car is running, and I took that as factual. However when the mechanic was here, noticed it never fluctuated when blipping the throttle He shut the car off, sucked on the vacuum line, and could taste fuel vapor. He explained that it had a bad diaphragm, and was probably not supplying enough fuel, as well as fuel possible traveling into the intake through the vacuum line.
|
|
|
|
Domtech
|
OCT 14, 04:32 PM
|
|
Are you sure that that regulator wasn't meant to regulate pressure returning to the tank?
In the questions section the seller says it is for a return system.
If that's the case, then I bet that what the regulator is actually doing is regulating the pump outlet pressure to be some set amount above rail pressure. which happens to result in a nice constant rail pressure and a pump being overworked at 100+ psi.
I think that it should have been set up like in the picture above, regulating the excess pressure to bleed off back into the tank.
EDIT: I found you a nice diagram of how people generally do it:
The image earlier in the thread is like the fist one in this image, but with the rail on a tee from the supply. That way functions the same as the 3 port regulator.[This message has been edited by Domtech (edited 10-14-2017).]
|
|
|
|