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98 Blazer cranking no start

Tiny
RIYAD614
  • MEMBER
  • 1998 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 176,000 MILES
98 blazer 176,000, doesn't want to start any more. I was spraying starter fluid to start it everyday and no it does not want to start. I changed plugs wires, cap, rotor buttom, fuel filter, fuel pump pressure is about 42-55 psi, injectors are pulsing, injectors plug is good (checked puls for all injectors and was one side positive and the other side nigative that is pulsing when cranking the car in all injectors)when I spray starter fluid or put some gas in the throttle body it will start until the gas run out. Checked all fueses and grounds they all good. No check engine light or code, and got good blue spark out of the plugs, wires and the coil. I can't pin point where the problem is at. PLEASE HELP
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Sunday, April 3rd, 2011 AT 2:32 PM

10 Replies

Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
Quit replacing parts it runs when u spray it. The oil pressure switch is bad or ecm needs replacement. This is a fuel issue.
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Friday, January 29th, 2021 AT 12:28 PM
Tiny
RIYAD614
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  • 21 POSTS
When it start for the few seconds the oil pressure looks good (up to 40 psi)on the gauge. And I get a good spark on the coil and the plugs but when I disconect the ecm I get no spark.
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Friday, January 29th, 2021 AT 12:28 PM
Tiny
CADIEMAN
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Fuel is your issue only. The ecm controls your injectors as well as spark.
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Friday, January 29th, 2021 AT 12:28 PM
Tiny
RIYAD614
  • MEMBER
  • 21 POSTS
I changed the ecm and the oil pressure switch, still cranking and not starting, what's next?
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Friday, January 29th, 2021 AT 12:28 PM
Tiny
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  • MECHANIC
  • 3,544 POSTS
Ck. For a broken timing chain. Remove the valve cover on the number =#1 cyl. Bank. Turn it over motor to see if the rocker arms are moving. If yes, remove #1 spark plug. Then rotate the crank to the timing mark is at 0top dead center. Then u insert a screw driver into #1 spark plug hole. The piston should be all the way up you will feal it. If not you need a timing chain. You have done everything, ck. The motor kk gl
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Friday, January 29th, 2021 AT 12:28 PM
Tiny
RIYAD614
  • MEMBER
  • 21 POSTS
Did that it is in time. Plus just changed the fuel pump, and doing the same thing, if I put gas into the throttle it will run great, I can drive it to newyork if I just keep adding gas to it. Do you think it is the spider wep under the intake?
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Friday, January 29th, 2021 AT 12:28 PM
Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
Fuel is all u should be checking. Go back to the fuel pump disconnect the fuel line and ck. The pump output. Turn the engine over 3 times straight at 1 time. Collect the fuel in a canister. You should end up with atlest 8ozs. Also ck. To see the arrow on the fuel filter is pointing the right direction.
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Friday, January 29th, 2021 AT 12:28 PM
Tiny
RIYAD614
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  • 21 POSTS
Checked the fuel and it was about 10oz. The fuel filter can only go one way (pressure fitting on one end and nut on the other). Tested fuel pressure and was about 64psi.
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Friday, January 29th, 2021 AT 12:28 PM
Tiny
RIYAD614
  • MEMBER
  • 21 POSTS
I found out the ignition coil was shorted I got a new one starter right up thank you.
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Friday, January 29th, 2021 AT 12:28 PM
Tiny
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  • MECHANIC
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Glad you could get it fixed, that kind of problem can be tough. Please use 2CarPros anytime we are here to help.
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Friday, January 29th, 2021 AT 12:28 PM

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