RV fuel leak! Repairing Fuel Pressure Regulator leak on 1987 Chevy P30 Motorhome

Discovered a leak under the coach, luckily before I left on my Trip to Tennessee. Seems like its always something on these classic RV coaches.
Good to go now!
Parts used: Holley 12-807
or if you need the whole regulator: Holley 12-803
Hope this helps someone.

[@user-rh9xv4zg6h]

thanks alot Rob, you just saved me a bunch of work, I was about to drop tank! thanks again!

[@GonewithRob]

Yes sir! Glad it helped! Safe travels!

[@detailokc7370]

glad I found this. Going to try this before dropping the tank. Wish they had located mine more like yours

[@UpstateScavenger]

What RV do you have?

[@detailokc7370]

@@UpstateScavenger 1987 Georgie Boy Lean Machine. After watching your video I went and messed with it a bit more. It appears that someone has welded in the bracket that hold the regulator inside the frame rail. I just want to get out on the road!

[@dfifer1242]

Having the same issue this minute... Your video popped up... You are a lifesaver🙏🙌👏

[@KustombyKrunch]

happy i found this . i was about to drop the tank to get that out. got the part ordered .

[@ClassALiving]

Love the new intro, repair kit is much better idea! Thanks again for the shout out!! :))

[@djdarrenrv]

cost me $8 at oreilly and about 1 hour total labor.

[@djdarrenrv]

this just happened to me! started as slow leak then was huge spray coming out & ONTO the hot exhaust! removed it. rebuild kit from oreilly only $8 "Holley Electric Fuel Pump Repair Kit HLY 12-807" is what you want. i dropped the tank only 3" NOT letting the nuts come off the THREE threded posts. then easy to remove one nut with socket, then other thats on the regulator with open crescent. re-doing the fittings with gas-proof liquid gasket MOTOSEAL, NOT pipe thread! i'm using the grey spring, NOT the red-painted one. red spring = 1-4psi, gray spring = 5-9psi. my system is an electris in-tank fuel pump then goes into fuel regulator to stay at about 7psi. then it goes forward to front of RV to carburetor into MECHANICAL fuel pump, which goes into the carb. make sure your mechanical pump is NEW!

[@djdarrenrv]

you don't have to remove the whole regulator to replace the diaphragm. i did because i didnt know where leak was & also wanted to re-do the fittings with proper liquid gasket.

[@BlakeTWiley]

Howd you determine weather to use red or plain?

[@djdarrenrv]

@@BlakeTWiley look in the existing one then use same one. red is 1-4psi, regular gray is 4.5-9 i believe. my carb needs 7psi so i used the gray regular one.

[@BlakeTWiley]

@@djdarrenrv ahh. I would think the fuel would strip the paint. Thanks for tne response.

[@lrayvick]

1986 Honey 25', 454. My problem is not enough fuel under load. Opened the fpr to check the diaphragm which is good. With the fpr open I turned the ignition to on then started the motor. I got no fuel out of the fpr. So I guess the electric fuel pump is bad. It looks pretty easy to drop the tank.

[@GonewithRob]

Ray Vick best of luck to you on that adventure. I got lucky on this easy fix.

[@MissAdventures]

DId you have to empty the gas tank first? Great video!

[@GonewithRob]

No, it doesnt leak when the motor isnt on.

[@deanhauser6626]

do you happen to have the part number?

[@GonewithRob]

Dean Hauser 0:52 - Holley 12-807 for the kit I used.

[@GonewithRob]

If you need the whole regulator. Holley 12-803

[@deanhauser6626]

unfortunately the maker of my 89 motorhome only left a hole big enough to adjust the pressure, I have to drop the tank

[@djdarrenrv]

you sometimes can still remove. there should be a nut holding that in there. remove that then crescent remove the side fitting to get it out.

[@mr_blue_falcon]

Need both fuel pumps for an 89 fleet wood pace arrow! It has the 454 Chevy big block and I have had no luck finding it. Any help would be much appreciated especially if you have part numbers

[@GonewithRob]

Sorry, my RV has been sold. I didn't replace the fuel pump, just the regulator... I am not positive but your fuel pump might be in the fuel tank itself. Can you see if there is an external pump near the tank along the rail? search Autozone for 1989 Chevy P30 truck... this will find the right parts. i dont know all your specs of your rig. Best Regards, hope you get it worked out.

[@mr_blue_falcon]

@@GonewithRob I found what looks to me like a pump on the rail right next to the tank but I'm not sure. I found the parts I need just dont know how to find there location or how to go about changing them

[@TOMAS-lh4er]

@@mr_blue_falcon ARE you still out there !!

[@lrayvick]

@@TOMAS-lh4er Not sure about yours but for my 1986 the pumps and regulator repair kit are available on ebay pretty cheap. I think the in-tank pump is EP386, different number if you want the sending unit also. The mechanical pump might be M6628. The regulator kit is Holly 12-807.

[@TOMAS-lh4er]

@@lrayvick HI ! Just saw your note , I didn't remember my posting from back then, I think I was trying to help someone looking for their regulator !!?? thanks

[@edwineeckerjr7286]

Did you test the pressure after installing the new part and what should it be for your size motor ?

[@GonewithRob]

Edwin E Ecker Jr No, I didn’t test pressure, I only changed the diaphragm. Ran great after the repair.

[@GonewithRob]

Not positive but I read that 5-7 psi is where you want it to be on the stock carb.

[@deanhauser6626]

@@GonewithRob thats true, 5-7 psi