2000 Silverado Starting Problems - Pirate4x4.Com : 4x4 and Off-Road Forum

BigLittleToyota · 07-28-2008, 10:27 PM

Ok, now the tow rig is acting up. 2000 with 5.3L. When I turn the key over it just cranks and cranks and doesn't want to fire. I'll back the key off and then on again and it may start, sometimes I have to go 3 times until it will start. It runs fine after that. I only have 58k on it now. Any ideas? Fuel pump? Ignition? Fuel Pressure regulator? Any help would be great.

Dave

Gearhead 1990 · 07-28-2008, 10:37 PM

I'd say take it to your local mechanic and have him plug it in and it will probably tell you.

3/4ton62gmc · 07-28-2008, 10:49 PM

First remove the fuel pressure regulator vacuum line if there is fuel in the vacuum line replace the regulator. If there is no fuel in the regulator install a fuel pressure gauge and check to see if the fuel pressure on the gauge drops to zero after you shut the truck off. If it does most likely is the fuel pump.

TireFryerSS · 07-28-2008, 10:52 PM

Its the check ball valve in your fuel pump more than likely. I had this issue on a '99 Silverado and Ive seen it on several other late model GM trucks.

Basically what happens is that valve is bleeding off fuel pressure and there isnt any fuel in the lines. Once the fuel hits the rails and injectors it'll fire up.

You can confirm this by putting a fuel pressure guage on it, turn the key on, but dont start the truck, see if you get any pressure at all, keep turning the key on/off until you get pressure, then start the truck. You should have somewhere around 50-55psi. Shut the truck off, and watch the pressure guage, if it starts to immediately bleed off, then you'll know.

BigLittleToyota · 07-28-2008, 10:59 PM

Thanks. I was leaning towards the fuel pump. Does the entire assembly need to be replaced, or is there an internal part to repair this? I don't want to sound like a tight-ass, it's just that there is only 58k on the truck, but things do go out.

Bo185 · 07-29-2008, 05:28 AM

Quote:

Originally Posted by BigLittleToyota

Thanks. I was leaning towards the fuel pump. Does the entire assembly need to be replaced, or is there an internal part to repair this? I don't want to sound like a tight-ass, it's just that there is only 58k on the truck, but things do go out.

Try changing the fuel filter first! Unless you already have. Then start with the pump, etc. Most time s it just a clogged filter.

mudbug660 · 07-29-2008, 11:59 AM

there's a repair kits for those fuel pumps on egay. New pickup and pump

07-28-2008, 10:27 PM	#1 (permalink)
BigLittleToyota Registered User Join Date: Mar 2006 Member # 68824 Posts: 83	2000 Silverado Starting Problems Ok, now the tow rig is acting up. 2000 with 5.3L. When I turn the key over it just cranks and cranks and doesn't want to fire. I'll back the key off and then on again and it may start, sometimes I have to go 3 times until it will start. It runs fine after that. I only have 58k on it now. Any ideas? Fuel pump? Ignition? Fuel Pressure regulator? Any help would be great. Dave

07-28-2008, 10:37 PM	#2 (permalink)
Gearhead 1990 Registered User Join Date: Feb 2007 Member # 87457 Location: Sandpoint, Id Posts: 488	I'd say take it to your local mechanic and have him plug it in and it will probably tell you. __________________ 2000 Yukon Denali hidden inside a 1997 Yukon body :D SAS, hp d44, 14ff, 5.13s, 38s.....

07-29-2008, 11:59 AM	#7 (permalink)
mudbug660 Wheeler Join Date: Jan 2007 Member # 85902 Location: Lafayette, La Posts: 256	there's a repair kits for those fuel pumps on egay. New pickup and pump __________________ 1972 fj40 5.3,465,205,44,14,40"

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

07-28-2008, 10:49 PM	#3 (permalink)
3/4ton62gmc Wheeler Join Date: Nov 2004 Member # 38880 Location: Phoenix Az. Posts: 247	First remove the fuel pressure regulator vacuum line if there is fuel in the vacuum line replace the regulator. If there is no fuel in the regulator install a fuel pressure gauge and check to see if the fuel pressure on the gauge drops to zero after you shut the truck off. If it does most likely is the fuel pump.

07-28-2008, 10:52 PM	#4 (permalink)
TireFryerSS Registered User Join Date: Jun 2006 Member # 74407 Location: TEXAS Posts: 624	Its the check ball valve in your fuel pump more than likely. I had this issue on a '99 Silverado and Ive seen it on several other late model GM trucks. Basically what happens is that valve is bleeding off fuel pressure and there isnt any fuel in the lines. Once the fuel hits the rails and injectors it'll fire up. You can confirm this by putting a fuel pressure guage on it, turn the key on, but dont start the truck, see if you get any pressure at all, keep turning the key on/off until you get pressure, then start the truck. You should have somewhere around 50-55psi. Shut the truck off, and watch the pressure guage, if it starts to immediately bleed off, then you'll know.

07-28-2008, 10:59 PM	#5 (permalink)
BigLittleToyota Registered User Join Date: Mar 2006 Member # 68824 Posts: 83	Thanks. I was leaning towards the fuel pump. Does the entire assembly need to be replaced, or is there an internal part to repair this? I don't want to sound like a tight-ass, it's just that there is only 58k on the truck, but things do go out.