wont start no spark and i believe no fuel

Discussion in 'Chevy S10 Forum (GMC Sonoma)' started by 96sonoma, Mar 29, 2013.

  1. 96sonoma

    96sonoma New Member

    ok so i had to replace a broken fuel line behine the engine going down and i had to unplug to of the plugs on the distributor to make it easier.. i belive when i put it on i got the 2 mixed up it started drove back firing and runnning like **** but i drove it to work on my brake i was going to take it for a wash switched the wires started sounded better backed up went to go forward and died... so im not getting spark and now im not hearing the fuel pump kick on.. i replace the coil didnt work took the cap off the rotor spins.. i want to switch the realys around to see if that could be it and i have no idea what relay is what i search couldnt find i have a 96 gmc sonoma v6.. my realys are located on the engine bay firewall passenger side theres 4 of them.. its not in the glove box place... but if some one could tell me what realy is what grate if you have ideas on how to get it to work again even better
  2. DamnThatMexican

    DamnThatMexican New Member

    Maybe a fuel pump?
  3. aloxdaddy99

    aloxdaddy99 New Member

    The first thing I would do is double check the firing order.Firing order is 1-6-5-4-3-2.Cylinders 1-3-5 are on the DRIVERS side front to back and 2-4-6 are on the PASSENGER side front to back. After you have corrected the order I would disconnect the battery to reset the computer and try to start it again. How strong is your battery?
  4. 96sonoma

    96sonoma New Member

    its all right in order now... and ive had the batt out twice for charging, but is there something that could of fried causing the fuel pump to not turn on and get no spark? and ive only tested spark in one cyl but i figured if ones not getting spark the other arnt either
  5. DamnThatMexican

    DamnThatMexican New Member

    If I remember right, when I checked my fuel pump in my S10 blazer, I pulled out the fuel line and had someone turn it over and, while you hear it prime, if you don't see the fuel squirt out of the fuel line you pulled it may be your fuel pump.

    When checking for a spark in different cylinder heads, put a piece of metal inside the plug, put it close to the head, or around the motor, try to turn it over, and if you see an arc it's not that cylinder.
  6. 96sonoma

    96sonoma New Member

    im not hearing it prime anymore... and when i tested for spark i just laid it on the valve cover saw no spark in the plug
  7. RayVoy

    RayVoy Active Member

    If the fuel lines are at pressure, the pump will not start, you need to bleed off a little pressure for the pump to start.

    I like to use one jumper cable to test plugs. Connect one clamp to the plug threads, the other to a good ground.

    If there is no spark and no fuel pump operation, there is probably a problem with voltage. The ignition key provides "hot when on" voltage in the RUN position, it should also provide voltage to the pump and the ignition when in the START position. perhaps a broken wire from the ignition switch, or a bad ignition switch.

    However, if it was ok before you started to work on it, it would not be likely that the ignition switch picked this time to fail. It is more likely, something you caused.

    Did you leave a wire off at the battery? Go back and recheck every connection at the battery.

    Did you blow a fuse, go back and recheck every fuse.
  8. DamnThatMexican

    DamnThatMexican New Member

    He's right, but if even thing is ok then I guess check the fuel pump how many mile does it have?
  9. 96sonoma

    96sonoma New Member

    you lost me with the jumper cable thing... but when i first had the problem the bat was good after i fixed the 2 cables and out it in the right order it started backed up went to go forward then it died.. the fuses in the fuse box in the side of the dash is good i cant check the relays because one idk what relay is what and i cant find any info telling me i have 4 relays on the fire wall of the engine bay on the passenger side dont know what any of them are.. also how would i release pressure?

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    unknown its stuck at 105k
  10. geo1

    geo1 New Member

    i cant remember if that year is included,but many will disable fuel system if theres no spark,so look into that first

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    2 more,check for power at coil,if no power go to fuses,if power goto dist.,other instead of bleeding down fuel,just crank engine,pumps always spin on cranking
  11. 96sonoma

    96sonoma New Member

    will i or someone near the tank be able to hear the spinning of the pump?
  12. geo1

    geo1 New Member

    just found in book youre vehicle has the disabling feature,so no it wont spin on cranking if there is no spark,go to coil power wire and test for 12v

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    haynes book for youre ride has all the testing procedures of dist. and coil,im a one finger typer so it would take a year for me to give info,one thing,did you disturb the electric connector to dist.?check everything in vicinity of dist.
  13. 96sonoma

    96sonoma New Member

    all i know is i mixed up 2 wires on the distributer while changing fuel line started drove it back firing crazy for about like 3 mins tops but while doing all that fuel did spray up by the distibuter and stuff.... but by chance if you know the 4 relays im talking bout do you happen to know witch on is witch?

    idk how much you read but distibutor does spin i did change the coil and no help

    also im working on getting a multi meter i dont have one
  14. geo1

    geo1 New Member

    relays are strong,and they have a fuse infront of them for protection,mixing 2 spark plug wires up seems coincedental,but fuel spraying,maybe?how is the button in dist.cap,the one that touches the rotor in center,is there spring pressure?
  15. 96sonoma

    96sonoma New Member

    is it on the cap or on the rotor.. and idk ill check on that tomorrow though but just in case lets say no pressure what would that mean?
  16. geo1

    geo1 New Member

    in the cap center,it rides on the rotor for timed spark for coil,im hoping for you that something just got tweaked,do check for the 12v at coil connector,that will rule out any fuse or relay,there are two items in dist.,module and pick up coil,with book in hand and multimeter,both cheap,should help diagnose no spark,hey stuff happens
  17. 96sonoma

    96sonoma New Member

    ok so ill come back here tomorrow.. after i check the cap button thing... so i lift the cap up and its under there in the cent on the bottom of the cap correct?
  18. geo1

    geo1 New Member

    yes,that and 12v at coil,good luck
  19. 96sonoma

    96sonoma New Member

    ok not to sure bout how to test 12v exactly but but ill figure it
  20. geo1

    geo1 New Member

    any news yet?

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