1999 Suburban 5.7 Not Starting
August 26th, 2012, 8:29 PM
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1999 Suburban 5.7 Not Starting
This is my moms truck and she needs it for work i do work on cars as a hobby so know a little about a little. The problem started when it became increasingly difficult to start and after started would idle rough and sputter and now it wont start at all. While turning over there was a few times where it wanted to start but never actually did and when i would stop the attempt to start it would putt putt a few times. It had tune up not even a year ago so the plugs and wires should be good and it did backfire after several attempts to start so im assuming that means it is getting fuel. I hear the fuel pump kick on as well. Im thinking maybe ignition coil but am no expert can anyone help.
August 26th, 2012, 9:14 PM
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This is my moms truck and she needs it for work i do work on cars as a hobby so know a little about a little. The problem started when it became increasingly difficult to start and after started would idle rough and sputter and now it wont start at all. While turning over there was a few times where it wanted to start but never actually did and when i would stop the attempt to start it would putt putt a few times. It had tune up not even a year ago so the plugs and wires should be good and it did backfire after several attempts to start so im assuming that means it is getting fuel. I hear the fuel pump kick on as well. Im thinking maybe ignition coil but am no expert can anyone help.
August 27th, 2012, 10:29 AM
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most auto parts stores sell fuel pressure testers and there is a fuel test port on the drivers side back part of the engine on the fuel supply and return lines it looks like a tire valve with a the key on engine off it should be 62-66psi
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August 27th, 2012, 4:39 PM
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It could be pump,filter or the regulator on the spider injector if the pressure bleeds down it could be the regulator or pump if you pinch off the return line and get better pressure its probably the regulator
The regulator and filter are the cheapest
The pump assy and spider upgrade are a couple of hundred each but the spider upgrade is a much better unit and comes with a new regulator the old spider assy was a crap design
The regulator and filter are the cheapest
The pump assy and spider upgrade are a couple of hundred each but the spider upgrade is a much better unit and comes with a new regulator the old spider assy was a crap design
August 27th, 2012, 4:51 PM
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what do I need to know before I do this because the manual that came with this testing kit is talking about disabling fuel pump and stuff like that what do I need to do