00 silverado trouble starting

Hi i have a 2000 silverado, it used to start with a flick of the key, now when you turn the key it just tries to start(not like the batt is dead it totally cranks over fast) now i have to pump the gas pedal 1 time, and it fires right up, this is not cool, can someone help me out .also the batt is brand new and charged

Fuel filter.

Hi i have a 2000 silverado, it used to start with a flick of the key, now when you turn the key it just tries to start(not like the batt is dead it totally cranks over fast) now i have to pump the gas pedal 1 time, and it fires right up, this is not cool, can someone help me out .also the batt is brand new and charged
In the future you should these questions in the Silverado forum.

sounds like a fuel pump check valve problem. does it happen when it sits for awhile? the valve is part of the pump assembley, located in the gas tank you will need a fuel pressure gauge to test for pressure.it must hold at least 25 psi after you turn off the engine and hold at that or above. if it drops off to zero you will need to replace it.

have you replaced the fuel pressure regulator? It is right up on top of the intake on the fuel rail. It is about a 15 minute job, and about $70 for the part. Nice and easy fix for an annoying problem. I have a 2000 Z71 with the 5.3 that would take a lot of cranking to start. After changing it out she fires up on the first try.
Good Luck!

Change both.. Filter and Fuel Preasure Regulator.

I did the filter, now im going to do the regulator.
Is there any special way to switch it? or just rag the gas and watch the eyes?
i take it i should disconnect the battery as well .
thanks for all the replies ill post how the regulator did, im on my way to Smothers (They have so much shiny crap there i can't even concentrate and my head jerks to every corner of the store, i wish i was rich, i'd still drive Chev.!!!)amongst other more exotic cars i guess

replacing the Regulator is one of the most simplist things you can do.

1) Turn engine off
2) Remove hose leading to Regulator
3) Remove clip holding Regulator in
4) Pull regulator out (making sure the seal is removed also)
5) Install new regulator (making sure seal is inplace)
6) INstall clip (This may get a little tricky, but can be done with a flot head screw driver.
7) Install hose onto regulator
8) Start engine
9) Check for leaks.

My opinion here, you should check the fuel pressure for 60-65 psi before anything is done. How else can you diagnose this problelm?

My opinion here, you should check the fuel pressure for 60-65 psi before anything is done. How else can you diagnose this problelm?

She seems to be having common syptoms related to the fuel preasure regulator. A lot of the post on here that have these exact same issues, have been solved by replacing it. Me included. :) I don't think a preasure test is needed in this case.

Thankyou all!!!!!!!!!! It indeed was the regulator, slapped in a Delphi, click!! Puuuuuuuurrrrrrr!!! Thankss again all, (since they want 400 bones for a new pump around here)
Thanks for all the input, and dont forget to change that damn filter and regulator!!!!

Thankyou all!!!!!!!!!! It indeed was the regulator, slapped in a Delphi, click!! Puuuuuuuurrrrrrr!!! Thankss again all, (since they want 400 bones for a new pump around here)
Thanks for all the input, and dont forget to change that damn filter and regulator!!!!

I'm gonna have to try this out on Monday. My truck has always started really nice until the last couple weeks that it's been cold out. So I assumed that the cold was the culprit. Well it was 60 degrees yesterday and my truck still had problems starting. It's the same symptoms you described, turns over nice...just doesn't fire, and when it does fire it barely does...once running she purrs just fine and I don't notice anything wrong.



Would this problem cause the Check Engine light to turn on? Mine has been turning on and off for the last couple of months, I've always assumed it was the gas cap issue I keep hearing about. Considering that it usually turns on or off about 70 miles into a new tank of gas.

Again, no matter what has been said here, random parts replacement is a crap shoot at best, check the fuel pressure, see if you have 60-65 when the starting difficulty occurs.

Again, no matter what has been said here, random parts replacement is a crap shoot at best, check the fuel pressure, see if you have 60-65 when the starting difficulty occurs.



Normally I'd agree 100% with that. But 1.) I don't have any means to do a pressure check 2.) I'd rather replace a cheap part myself to see if it fixes the issue rather than pay a mechanic to run some tests then replace the same part and charge me labor on top of it.

If it doesn't fix the issue, which like you said there is a good chance it won't, well at least I no longer have to worry about the filter and regulator, and I'll have it looked at by someone who knows what's going on.

I don't normally take this approach, but it seems to be a fairly common problem (this regulator) so I'm going to hopefully save myself some cash and change it out myself and see if it works.

So when I get around to changing it....(hopefully monday, but I hear it's going to rain) and it doesn't work, I'm going to come back and thank you for the good advice

A pressure tester cost about 50.00 comes with the adapters and is a lifetime tool purchase, I am lost with this mentality, people spend more money attempting repairs then if they paid a pro one time, in a lot of cases I see here and in my business. I wish you all the luck, don't take me wrong, if you can fix this like this great, but it is still an expensive gamble.

A pressure tester cost about 50.00 comes with the adapters and is a lifetime tool purchase, I am lost with this mentality, people spend more money attempting repairs then if they paid a pro one time, in a lot of cases I see here and in my business. I wish you all the luck, don't take me wrong, if you can fix this like this great, but it is still an expensive gamble.



I spoke to a mechanic friend of mine, and he told me after I have the engine warmed up to shut it down, and pull the vac line. Well I'm assuming that the small black rubber line on the top of it is the Vac line (it's 0 degrees outside with negative windchill, didn't take the time to follow the line to see where it leads).

Well when I pulled the line fuel came out. He said if fuel leaked out, the regulator was bad and that I should replace it. But with the amount of fuel that came out I just wanted to make sure that this is actually the vac line and not the fuel line. Because like you said, I don't want to replace something that I'm not sure is bad. All of my engine experience is on small engines, not on vehicles.



***EDIT***

I spoke to my friend and he confirmed that it was indeed the vac. line, so I guess I'll be replacing it.

Man, this did do the trick for me too! Thanks everyone that post here. A dealler would have charged me over $200 to diagnose and fix....

I dont know were I would be without this place.

Also I wanted to note that there are 2 versions of this fuel pressure regulators. 99-00 use version 1 and 01-up use version 2. Napa was the only place that sold both. Orileys, autozone and advanced only had version 2. Version 2 made my truck run funny and the regulator made a vibration when installed. Just an fyi.

Man, this did do the trick for me too! Thanks everyone that post here. A dealler would have charged me over $200 to diagnose and fix....

I dont know were I would be without this place.

Also I wanted to note that there are 2 versions of this fuel pressure regulators. 99-00 use version 1 and 01-up use version 2. Napa was the only place that sold both. Orileys, autozone and advanced only had version 2. Version 2 made my truck run funny and the regulator made a vibration when installed. Just an fyi.

Also with version 2 you will get horrible gass millage. I went ahead and purchased the one from the dealer after making the mistake of buying the one from Advanced Auto Parts.

I have had the same problem with the truck not starting properly. I did pull the vacume line off the regulator and if fuel does come out, then the regulator is bad. That is how my cousin, who works at the dealer, check the regulator. However, after replacing that a month ago, I am back to it not starting properly. It is not the regulator this time and I just replaced the fuel filter about 3 months ago. I am going to check the fuel pressure this weekend. The truck only has 84 K on it. Any other suggestions?