The hose to my fuel pressure regulator was cracked. Upon removing it I found out it was extremely clogged up. I removed it and installed a new hard line and boots, but the FPR itself is clogged where the vacuum hose was connected. Is there a way to clean this out safely? What is the diaphragm inside made of? The reason I ask is because I don't want to spend $60 I don't currently have on a new one and am considering either using throttle body cleaner on it, or possibly even chem dipping it.

Spray it out with throttle body cleaner?

That's the current plan, I am just worried if there is anything inside like rubber seals etc it could dry them out and cause the diaphragm to leak. Has anyone tried this before?

how about just soaking it in gasoline? You know that's safe, if that doesn't work you can always try more aggressive solvents later.

Gasoline is how I cleaned my fuel pump assembly. It had been sitting for almost 4yrs and When I removed it it was so gummed up with old gas the screen filter would barley flex. pulled those off and scraped off what I could then soaked it overnite in fresh fuel. It cleaned up good as new the next day. At this point you really cant hurt anything.

With the cost of gas here that cup of gas may pay for the new FPR :P. Great idea though, thanks. I'll give it a try, I always seem to overlook the most obvious solutions.

use carb cleaner, don't worry about damaging rubber and such, spray into vac port on regulator, soak for a minute, use compressed air to blow out the gunk. I do stuff like this day in day out, never had a problem, ever.