Accel fuel rail regulator.......

[Jim Nilsen]

I am trying to get fuel to go to my fuel rail and have fuel right to the supplied regulator that is attached to the fuel rail. It is the non adjustable regulator with the vacuum line on it. Has anyone ever had this problem when installing theirs?

The new system has plenty of pressure from the pump now that the rear regulator was adjusted in more but it seems like the supplied regulator is not letting the fuel go to the rails.I have bleed the line going to it and have plenty of fuel to it.

It doesn't make any sense, I even put vacuum on it to see if it would actuate or do something.

I have talked to Dave at Accel and got my programming problem solved I do believe but without fuel it won't start yet and I am trying to get back in touch with him but that might take awhile.

I'm tired of getting gas everywhere but in my cylinders,lol

[Mike Holleman]

I am trying to get fuel to go to my fuel rail and have fuel right to the supplied regulator that is attached to the fuel rail. It is the non adjustable regulator with the vacuum line on it. Has anyone ever had this problem when installing theirs?

The new system has plenty of pressure from the pump now that the rear regulator was adjusted in more but it seems like the supplied regulator is not letting the fuel go to the rails.I have bleed the line going to it and have plenty of fuel to it.

It doesn't make any sense, I even put vacuum on it to see if it would actuate or do something.

I have talked to Dave at Accel and got my programming problem solved I do believe but without fuel it won't start yet and I am trying to get back in touch with him but that might take awhile.

I'm tired of getting gas everywhere but in my cylinders,lol
Jim, I plumbed the reg. after the fuel rails. My plumbing was tank to prefilter to pump to secondary filter to back of RS rail, front of rail looped to LS, out the back to reg, reg return to tank return. I know there is not "one way" to plumb but this worked well in my application. My regulator was an adjustable type, supplied by Accel w/vacuum line. It is adjusted to 48 psi as per Accel.
Hope this helps.
Mike

[GetMore]

I wonder if there is a check valve in the regulator. Maybe that's keeping the fuel from flowing "backwards".

[Jim Nilsen]

Here is a pic of the supplied regulator that they put on the fuel rail. the setup had just the pump to this regulator which is non adjustable from what I know. It is more than likely designed to bring the pressure from the 60 psi pump to the 45psi need for the rails and it is opened and closed by a diaphram that more than likely just makes it flow a bit less at idle and without the car running it should give full flow.

I will try to talk to Dave at Accel about it in the morning if he calls me back after leaving an email. i sure hope it is not defective.

I have plenty of fuel at the connection going in. I had at least a half of a cup bleed out when loosening the fitting. I had also bled it off earlier to get the air trapped in the line previoulsy in the day.

[Jim Nilsen]

I wonder if there is a check valve in the regulator. Maybe that's keeping the fuel from flowing "backwards".

Without taking it apart I am thinking that it is just a hole and a piston attached to a diapham than opens the hole with less vaccum and at idle it closes it partially to make the pressure drop a bit to make the idle smoother. If it is defective and the hole is blocked because it wasn't assembled right , like in backwards or something like that fuel should just flow right into the fuel rails.

I gotta tell ya that at this point there are no possiblities that out of the question. I am like Hansel and Grettle leaving a fuel trail and somehow something keeps eating my fuel up at every point along the way. I keep wondering if I will ever get to the injectors and be able to make my way out of the garage and back home again.

[andrewb70]

The line that comes out of the regulator is the return. Think of the fuel system as a loop. The pressure in that system is controlled by the regulator. It does not matter if the regulator is before or after the regulator. Pressure is simply a measure of restriction. This is very similar to what I had on the 502 when I was using the Holley EFI hardware. My line from the pump went straight into the fuel rail in the front. The return line came off the regulator and went back to the tank.

Andrew

[Jim Nilsen]

The line that comes out of the regulator is the return. Think of the fuel system as a loop. The pressure in that system is controlled by the regulator. It does not matter if the regulator is before or after the regulator. Pressure is simply a measure of restriction. This is very similar to what I had on the 502 when I was using the Holley EFI hardware. My line from the pump went straight into the fuel rail in the front. The return line came off the regulator and went back to the tank.

Andrew


Thanks for the help Andrew. I can use all the help i can get right now and am going nuts trying to get this beast running.

If anyone can get a bad part from the factory it is me. I have always had bad luck with new parts and when I get good ones I have no problems but this is getting to the point of ridiculous with all ofthe new parts having to work together and having so many not working.

I pulled the Bosch regulator off of the fuel rail and the vacuum portion doesn't move and I can't even get 100+ psi of air to go thru it. It is totally sealed off. Fuel or air should just go right thru it and the diaphram should move with my mightyvac at 25in. of vacuum but nothing.

This liitle piece of crap probably saved me from using the racepump and having problems down the road but it is causing me to not get the efi unit to work either.

Now I have to get a new regulator unless someone can tell me that I have to do something unusual to get it to open.

Thanks for letting me know I am not crazy and understand how it should work. I have worked with regulators for years and only have problems like this when they don't work. Usually I just go to the patrs shelf and get another ,go put it on and whalla fixed like new.

Seems like I have bad one right from the factory.

If anyone knows a trick to get it freed up i'm all ears.

Thanks again and with everyones help maybe we can get this car running by Friday.

[Jim Nilsen]

I made the mistake and had the in feed to the return out. After going back and reading the intructions I found where I misunderstood what was being conveyed. I feel pretty stupid now and have to say that a picture would have been a lot better for me. Now they have a vidoe that comes with the kits.

All in all I am happier with the way the new setup works and looks.

I actually hydrolocked the regulator to say the least but it is history and I know better now.

Hope everyone had an entertaining time and learned from my mistake.

[Jim Nilsen]

After a good poke in the right place I got the bosch regulator to operate . It was hooked up wrong to start and is a bypass nonadjustable regulator and it got a bit locked up with fuel on the wrong side.

It is out of the system anyway but I figured I better post this to let you all know what had happened. When I got it freed up it sprayed out fuel when I put air to it.

I like the new fuel configuration a lot better anyway since it doesn't have the required return line from the front of the car.

When I was 12 I was doing a roof for a church and the pastor who was teaching us let me and my friend put 3 rows of shingles on wrong before he said something about us being off of on the gaps. We asked him why he didn't tell us sooner before we had gotten that far? He told us that anyone can do things right but it is the people who learn how to correct their mistakes that are a lot smarter and we just learned how to fix someone elses mistakes even if it was ours to start with. I saved a lot of tubing because he taught us that lesson.


Someone can now move this out of the emergency room now if they like.

Thanks