gas in air resonator

[akvanden]

While changing my spark plugs today I noticed lots of gas in the air resonator. I did some research and its looking like a bad fuel pressure regulator? A. Does that sound correct, B. Are they easy to replace?

 

[Wooluf1952]

While changing my spark plugs today I noticed lots of gas in the air resonator. I did some research and its looking like a bad fuel pressure regulator? A. Does that sound correct, B. Are they easy to replace?

A) Yes
B) Yes (On the 2002 thru 2004)

The FPR is connected to the air resonator thru the small vacuum tube at the front right (drivers side) corner.

 

[akvanden]

Thanks!

 

[akvanden]

I ordered one off rock auto, but until it comes here, is that OK if I block off the vacuum hose going into the pressure regulator so I don't have to keep dealing with gas in my resonator? I tried it tonight with a bolt in the line and it ran just fine, but would rather not ruin anything.

 

[madklicker2]

I ordered one off rock auto, but until it comes here, is that OK if I block off the vacuum hose going into the pressure regulator so I don't have to keep dealing with gas in my resonator? I tried it tonight with a bolt in the line and it ran just fine, but would rather not ruin anything.

Without a vacuum on the regulator, I don't think it'll do too much harm (especially if you don't intend on driving it that way for very long). I've read recently that your idle speed will increase to roughly 900 RPM (from the typical 600-ish), but I haven't seen anyone report any other bad side effects. However, others here would have a more expert opinion.

I just replaced my FPR last weekend at 208,359 miles (old one was probably original, and was leaking fuel out of the case seam around the outside of it on cold startup). The process was fairly easy, just time-consuming for me because I had issues getting the engine wiring harness out of the way (makes gaining access to it much easier). Plus, it was kind of late at night and I didn't have adequate lighting. Oh - make sure you do it in an area with good ventilation, as there will be some fuel spilled as you take apart the lines and remove the regulator from the rail. I was in a garage, and found it better to have a fan blowing away the fumes. If you do it outside in the open, you may not have that problem.

I used the ACDelco part 2171445 from RockAuto, FWIW.

 

[akvanden]

Without a vacuum on the regulator, I don't think it'll do too much harm (especially if you don't intend on driving it that way for very long). I've read recently that your idle speed will increase to roughly 900 RPM (from the typical 600-ish), but I haven't seen anyone report any other bad side effects. However, others here would have a more expert opinion.

I just replaced my FPR last weekend at 208,359 miles (old one was probably original, and was leaking fuel out of the case seam around the outside of it on cold startup). The process was fairly easy, just time-consuming for me because I had issues getting the engine wiring harness out of the way (makes gaining access to it much easier). Plus, it was kind of late at night and I didn't have adequate lighting. Oh - make sure you do it in an area with good ventilation, as there will be some fuel spilled as you take apart the lines and remove the regulator from the rail. I was in a garage, and found it better to have a fan blowing away the fumes. If you do it outside in the open, you may not have that problem.

I used the ACDelco part 2171445 from RockAuto, FWIW.

Thanks for the advice. I ordered the Delphi part from RockAuto, few bucks cheaper. That ACDelco part you referenced is even cheaper off Amazon though, noticed after the fact. Like $52 shipped with my prime account. Oh well.

 

[The_Roadie]

I just replaced my FPR last weekend at 208,359 miles (old one was probably original, and was leaking fuel out of the case seam around the outside of it on cold startup).

My good buddy (and co-owner of offroadtb.com with me) Teebes has his 2002 FPR fail last month while on an expedition to Alaska. I was going to Fedex him one, but he got his patched together with JB Weld enough to limp down to Montana where he was able to more easily buy one and get it shipped in. Seems this is destined to become one of the next long-term failing items on our platform.

 

[Sparky]

My old car had FPR issues, but the only thing it caused was hard starts in the morning and a cracked vac line from fuel getting into it.

I'll keep an eye on the FPR on my Trailblazer.