Fuel Regulator made everything worse
#1
Fuel Regulator made everything worse
So basically to make a long story short I replaced my fuel pressure regulator trying to get rid of a cold start issue. After installing the new regulator the car has a smooth idle but basically falls on its face stumbling when you start driving. I took everything back apart to make sure I didn't screw anything up and when I put it back together I still have the same issues. The kicker is when I took it all back apart for the 3rd time and put back the original regulator i had in it to start with the car runs like normal... Has anyone got a bad regulator out of the box? I didn't mess with anything on the regulator itself other than the 2 screws that hold the mounting plate on...
#2
I would suggest following the instructions in this thread: https://blazerforum.com/forum/2nd-ge...eakdown-88305/ Then post all 4 readings, and we can diagnose the problem correctly for you. No guessing, no replacement of parts that you don't need, no wondering if you got a bad part
#3
Thanks Captain i will hopefully get my hands on a tester again tomorrow. I had a mechanic do a quick check on the pressure the other day but they only tested it after it was warm and all they tested was while the car was fully running. Of course i didn't ask what the numbers were after they said it was good because well i'm an idiot and they suggested to get a coolant temp sensor so i drove back home and did that with no luck. Since i didn't have the fuel pressure tester at home i decided to pull off the intake plenum to see if there was anything obvious and the regulator side was clean/washed while the other side was filthy so i assumed it was the regulator since all the lines looked good and i didn't see any obvious leaks while pressurizing the system with the key. Either way i will try to get the numbers asap and quit treating the internet like web MD since apparently i'm dying in 12 ways according to that site lol.
#4
Coolant sensor was a guess. Checking fuel pressure while the engine is running does absolutely no good, results are totally worthless. We'll teach you the right way to test stuff Welcome to the forum, BTW.
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