Question about 1984 Chevrolet Blazer

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The truck won't stay running, it gets fuel and will start with starting fluid but won't stay running. I guess it could be a vacuum problem but it was running fine before this, I just can't figure it out.

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Yes it can be vacuum problem.But also the other possibility is low fuel pressure.Get the fuel pressure first checked.If its low then its faulty fuel pump and clogged fuel filter causing this problem.Also the other possibility if the fuel pressure checked ok then its weak fuel pump relay causing this problem. You may have a problem with the contacts in the ignition switch (not key part), when you crank the engine a signal is sent to the fuel pump to run, when it starts and you let off the key another set of contacts keeps the pump getting power Through a relay). This will help out. Thanks.Helpmech.

Posted on Nov 12, 2010

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