97 S-10 Blazer Fuel Problem
#1
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Need help or suggestions.
97 blazer was running rough last fall.
Left it sit all summer. Now won't start. I replaced the fuel pressure regulator. New fuel filter. Fuel pump runs. I can hear it. Checked the IAC it has the right voltage and resistance.
When I push in the pressure gauge connection at the fuel rail I get a good squirt of gas each time.
If I place a little bit of gas in the throttle body the car runs for a few seconds.
I checked the pink leads at the fuel injector connection and have a steady light on each with key on. I checked the ohm resistance across the injectors and all have about the same 11-12 ohms.
Any suggestions why it is not delivering fuel to the cylinders?
97 blazer was running rough last fall.
Left it sit all summer. Now won't start. I replaced the fuel pressure regulator. New fuel filter. Fuel pump runs. I can hear it. Checked the IAC it has the right voltage and resistance.
When I push in the pressure gauge connection at the fuel rail I get a good squirt of gas each time.
If I place a little bit of gas in the throttle body the car runs for a few seconds.
I checked the pink leads at the fuel injector connection and have a steady light on each with key on. I checked the ohm resistance across the injectors and all have about the same 11-12 ohms.
Any suggestions why it is not delivering fuel to the cylinders?
#2
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You need to test the fuel pressure.
That won't tell you anything. Get a fuel pressure gauge and follow the steps in this article.
96+ Fuel Pressure Diagnostics
96+ Fuel Pressure Diagnostics
#3
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I ran a fuel pressure test at the fuel rail. The engine won't run so with key on and engine not started I get 38-40 psi. Anyone have any suggestions? I am thinking fuel pump or pigtail connection at the fuel pump corroded.
If it is a fuel pump anyone have suggestions to the best brand or place to buy one. I know they are pricey.
If it is a fuel pump anyone have suggestions to the best brand or place to buy one. I know they are pricey.
#4
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AC Delco on the pump.
Sure sounds like you have a pump problem, but to make sure, what was the fuel pressure X minutes after the pump shut off (where X is 5, 10, 15, 30 minutes)?
Sure sounds like you have a pump problem, but to make sure, what was the fuel pressure X minutes after the pump shut off (where X is 5, 10, 15, 30 minutes)?
#5
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I ran a fuel pressure test at the fuel rail. The engine won't run so with key on and engine not started I get 38-40 psi. Anyone have any suggestions? I am thinking fuel pump or pigtail connection at the fuel pump corroded.
If it is a fuel pump anyone have suggestions to the best brand or place to buy one. I know they are pricey.
If it is a fuel pump anyone have suggestions to the best brand or place to buy one. I know they are pricey.
P.S. And ditto to what Kyle said about AC Delco. Anything less, and you may be doing it again way too soon. I hope to never have to do this one again.
Last edited by Psychropod; 12-03-2009 at 04:00 PM. Reason: Added the P.S.
#6
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Thanks all for the info. This is my second round with a fuel pump. About 2 years ago I put a Airtex in. My mistake. Tried to pick up a ac delco but no one had one in stock. So NAPA sells a carter fuel pump. Going to give it a try. Anyone have any experience with this? Of course as I took the tank out the strap in the front broke, and the bolt on the strap in the back wouldn't come out. Had to cut it with a cut off grinder. Wow did that make me nervous around the fuel tank. Suprisingly our local chevy dealer had both parts on stock. $20 buck for both. Oh well its only money. Let you know how this all ends.
#7
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