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Hammer Time
Hammer Time, L1 Master Technician
Category: Car
Satisfied Customers: 4942
Experience:  ASE Mastertech with Adv level Engine performance cert.
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where is the fuel pressure reg. located on my 99 s10 blazer

Customer Question

was told i needed a fuel pressure regulator replaced on y99 s10 blazer
Where is it located?
Submitted: 9 years ago.
Category: Car
Expert:  Hammer Time replied 9 years ago.

It is internal under the upper intake manifold.

Here's what it looks like after the upper intake is removed.





Customer: replied 9 years ago.
Reply to Hammer Time's Post: looks like its not as easy as I had hoped.
Can I be sure this is my problem.
I replaced the fuel pump about a month ago
and it worked great. Going down the road it just
quit and wouln't restart. checked the fuel pump
out. and is working properly. replaced filter.
Still no luck. Poured 2 oz of gas into throttle
body , started and ran good untill gas was gone.
starter wants to kick out very quick when I try
to start again may be a seperate problem but i think its related , used to start after barely cranking over now for the last few weeks have to
attempt at least twice
Expert:  Hammer Time replied 9 years ago.

No, that doesn't sound like a regulator problem but it is possible. You will need to run some tests to determine what the problem is.

The first thing yoiu need to do is use a fuel pressure gage to determine the exact fuel pressure. This is a high pressure system and a loss of merely a couple pounds and it won't start.

You need a minimum of 55 PSI to run. If you don't have that, then try pinching off the return line and see if that makes the pressure spike. If it does, then you could start to blame the regulator. If not, it's likely the pump.