Fuel Pressure Regulator

Let’s talk Fuel Pressure Regulator

Fuel Pressure Regulator Symptoms

cowboysvolvofan » In addition to tackling codes this weekend, I recently noticed the smell gas inside and outside my 850. I popped the hood and noticed a slow leak from the fuel pressure regulator. I disconnected the vacuum line, which NOW, I know was a big mistake because after reading the Chilton’s manual, it tells me to relieve the pressure before disconnecting anything. Well… anyhow, the line looks good, no cracks or holes. I believe the leak is coming from the top of the regulator. Either way, it’s in a spot where I can’t tell exactly, but the gas builds a small pool.

Fuel Pressure Regulator Swap Tutorial

I just came in out of the cold from replacing my Fuel Pressure Regulator. Only took me about 20 minutes to actually do the work, however, coming inside to warm up made this an hour long job.

I’ve included some pictures. I didn’t think about taking pictures until I was about to put everything back together, forgive me, but at least I got something.

The new f.p.r. on the left and the old f.p.r. on the right. If this is the cause of my leak, the only thing I can think of is maybe the orange o-ring shrunk. Everything else looks ok.

A look at the injectors. They are D-I-R-T-Y. Don’t worry, I cleaned them up the best I could before I put them back in. Also, you can see where the gas stained the manifold. The leak pooled at the top of the manifold and leaked down to cause that stain.

Fuel Pressure Regulator

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Last Updated on April 23, 2025