1997 Chevy Blazer Not Starting
rmc3pe
07-25-2010, 05:15 PM
I bought a 1997 Chevy Blazer LS 4-door, 4x4 last week that was not running. I brought it home and put a new battery in it and tried to start it up.
I noticed that the fuel pump was not coming on, so I checked the main ignition wire for spark(it had very good spark) and sprayed starting fluid down the intake port. The Blazer started immediately and ran well as long as I was spraying starting fluid down the intake port.
So, the next day I installed a new fuel pump. The new pump turned on and appeared to pump up properly, but the Blazer would not start. So, I checked to make sure the fuel filter wasn't clogged. (it wasn't, there was strong fuel flow through the filter)
Next, I rechecked my spark (which was still good) and tried to start the engine spraying starting fluid like I had the day before. This time the engine would not start even with starting fluid sprayed in the intake port.
Has anyone encountered this problem before?
I noticed that the fuel pump was not coming on, so I checked the main ignition wire for spark(it had very good spark) and sprayed starting fluid down the intake port. The Blazer started immediately and ran well as long as I was spraying starting fluid down the intake port.
So, the next day I installed a new fuel pump. The new pump turned on and appeared to pump up properly, but the Blazer would not start. So, I checked to make sure the fuel filter wasn't clogged. (it wasn't, there was strong fuel flow through the filter)
Next, I rechecked my spark (which was still good) and tried to start the engine spraying starting fluid like I had the day before. This time the engine would not start even with starting fluid sprayed in the intake port.
Has anyone encountered this problem before?
old_master
07-25-2010, 08:23 PM
Starting fluid is dangerous and can cause severe engine damage, use carb cleaner instead.
Is there a good blue, not orange, spark at each plug while cranking?
Check fuel pressure and leakdown. Key ON, engine off, fuel pump running: pressure must be 60psi to 66psi and must remain above 55psi for 3 to 5 minutes after the fuel pump shuts off.
Is there a good blue, not orange, spark at each plug while cranking?
Check fuel pressure and leakdown. Key ON, engine off, fuel pump running: pressure must be 60psi to 66psi and must remain above 55psi for 3 to 5 minutes after the fuel pump shuts off.
rmc3pe
07-25-2010, 09:47 PM
What would cause it not to start the second time with starting fluid?
bobboo
07-26-2010, 09:24 AM
They have bad ignition switches which could be the problem. When you turn the key on if your warning lights and guages dont work i would check the ignition switch.
rmc3pe
07-26-2010, 10:47 AM
Hi Bobboo,
Thank you for the reply. The system seems to have a good spark and the dash lights and gauges all come on when I go to start it. Also, the Blazer started using starter fluid the day before, so I don't know why it won't now.
Robert
Thank you for the reply. The system seems to have a good spark and the dash lights and gauges all come on when I go to start it. Also, the Blazer started using starter fluid the day before, so I don't know why it won't now.
Robert
old_master
07-26-2010, 04:09 PM
What would cause it not to start the second time with starting fluid?
That's what we're going to find out.
If you have good blue spark at each plug, check the fuel pressure and leakdown.
That's what we're going to find out.
If you have good blue spark at each plug, check the fuel pressure and leakdown.
rmc3pe
07-26-2010, 05:57 PM
Hi Old Master,
Thank you for your reply. I'll have to get a fuel pressure gauge. It may take a few days before you hear back from me.
Robert
Thank you for your reply. I'll have to get a fuel pressure gauge. It may take a few days before you hear back from me.
Robert
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