LLY: Fuel pressure relief valve

[timmey]

I have an lly with a bad fuel pressure relief valve. I did the bottle test and after running for about 5 sec it filled a 20oz bottle with fuel so I am positive this is the problem. I am trying to get the valve off so I can put a race valve on but the original valve seems to be tightened to about 500ft-lbs and won't come off. also, there is very little exposed that the wrenches don't seem to be able to actually hold anything. does anyone know a trick to removing this? my truck is pretty much stuck until I can fix it. Thanks in advance

 

[BLACKMAX1]

I stood outside the fender and pulled the wrench like a man. Some have used ratchet straps, and breaker bars. If you strip it you can use those bolt extractor sockets to get some bite of whats left.

 

[Verlon at ATP]

Take an box end wrench of the correct size, 18mm I believe, and grind it down so there is no bevel on the edge. This should give you plenty of bite. Use the ratchet strap method to break it loose.

 

[weazel]

I used a short impact and a deep socket 18mm. Pull the glow plug module and bracket out of the way, and it's easier to get at with the impact. Hammered that booger right out of there!

 

[timmey]

Thanks guys. I tried the ratchet strap with a ground down wrench and it still didn't come off. So I removed the fuel rail and tried an impact and it rounded the wrench flats. after no luck with any easy outs or anything else my final solution was to use a grinder to grind two new flats on it and clamp some vice grips on it. It took about an hour of beating it with a hammer but I finally got the damn thing off.

 

[Bonestock]

I use a matco flex head ratchet wrench and put a 16" long piece of pipe on it. Works everytime. You will need to pull gp relay mod out of way.

 

[ieetgluu]

Ratchet strap method worked here

 

[messejme]

I listened to a half hour lecture from the wife, then I used my f$%&ing teeth.:thumb: