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2000 chevy silverado 1500 5.3

Overstreet1991

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Overstreet1991 Enthusiast

Overstreet1991

Posted
Posted

I have a 1999 chevy 1500 5.3 that I need help trouble shooting about 3 days ago I ran out of gas had someone bring me gas and went to crank it up and it took forever to get cranked and it ran rough and was making a knocking noise finally I got it smoothed out and drove it about 5 miles back to my house and parked it for a few mins left it running then got back in it and went to go to my buddy's house and when I pulled out the neighborhood I lost acceleration and the truck died. So I checked fire and all spark plugs have fire but the I have 0 compression on all 8 cylinders makes me think it's something electrical for me to drop all 8 cylinders at one time. If anyone has had this problem I could really use some guidance in what it could be or what to check next 

davester Senior Enthusiast

davester

Posted
Posted

Call me crazy, but zero compression on all cylinders seems like a mechanical problem, not an electrical one, as your engine is pre-cylinder deactivation (assuming you can crank the engine over to do the compression test).

txab Senior Enthusiast

txab

Posted
Posted

Since you believe an electrical issue can cause 8 cylinders to drop to zero psi compression on all 8 cylinders at the same time, makes me wonder if you're performing compression test correctly, or with a properly functioning gauge.

KARNUT Senior Enthusiast

KARNUT

Posted
Posted

I have to check to see if there’s a gas problem. Fuel filter, fuel pump. It just the logical choice if everything was fine prior to running out of gas. I had an old truck I syphon gas out of. Just after it would run great for a few miles then quit. I chased the problem for awhile it was my toy. After replacing everything electrical I pulled the pump out of the tank. I knocked crud loose when I syphoned gas. It would settled then clog the pump when running. Trace the obvious first go from there.


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riverbanks Senior Enthusiast

riverbanks

Posted
Posted

Spray some carburetor clean in the t.b.,starts?got compression,no or little fuel,does pump make more noise than before?

Colossus Senior Enthusiast

Colossus

Posted
Posted

the fuel sending unit in the pump on these things have been known to be very weak and fail easily, especially if you run the thing out of fuel.  On a 99 the fuel filter should be in-line and not in the tank, so replace that as well. 

davester Senior Enthusiast

davester

Posted
Posted

Yes, you don't want to run these fuel pumps out of fuel, as they will die quickly if they run with no fuel, as the pump uses the fuel both as lubrication and for cooling.

Joshua Taylor Enthusiast

Joshua Taylor

Posted
Posted

 I completely agree with everything everyone was saying about the fuel pumps. They are very finicky, I've had to replace my fuel pump so many times I got sick of dropping the tank. I took a grinder and cut a hole in my bed right above the fuel tank and you can buy a locking airtight door online for that specific reason. I'm sure a lot of people won't agree with cutting a hole in your bed but with the locking hatch you can buy online it looks very nice and I am very happy I did it. I can now change my fuel pump in about 10 minutes. I've only ran out of gas in my truck once and I did have to replace my fuel pump after doing that. I don't know if other people have the same problem going through so many fuel pumps but for me I was very happy I did it the last time I had to change my fuel pump. But from my experience of having so many fuel pump issues I would almost guarantee it is your fuel pump. But like others have said definitely change your inline fuel filter as well and when you're changing your fuel pump make sure you clean your tank and get rid of any debris in the tank. It doesn't take much 2 destroy your fuel pump. Just a idea in case you have many problems like I have had with fuel pumps. Screenshot_20191111-094537_Chrome.thumb.jpg.0be15691a1a510edfa85df353832a067.jpg

Screenshot_20191111-094556_Chrome.jpg

Jet-X Enthusiast

Jet-X

Posted
Posted

That's a nice idea.  How did you determine the location and where to cut?  

Black02Silverado Senior Enthusiast

Black02Silverado

Posted
Posted

My understanding for a compression test is that you warm up the vehicle.  pull all the spark plugs and then take each cylinder readings.  That way the engine can turn over easy with all the plugs out. But since you can get it running then a warm engine isn't going to happen.  Also if all the cylinders are 0 psi then you either have holes in your pistons or all your valves are stuck open. 

 

I say something else is up since it was just running and then died. 

  • 2 weeks later...
Overstreet1991 Enthusiast

Overstreet1991

Posted
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Posted

Well finally got around to looking at my truck yesterday and  coincidentally the timing chain jumped timing as my fuel light came on which made me think I was out of gas which I wasnt and my fuel pump wasnt bad I pulled the motor and low and behold the cam bearings were wore so much that the cam dropped down and let the chain jump timing the block is shot the cam ate deep valleys in the block time to start over fresh with a new engine 

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