Question about 1983 Chevrolet Blazer
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Posted on Jan 02, 2017
Before spending several hundres on a fuel pump, I recommend doing a fuel pressure test. You can get a test gauge pretty cheap at a parts store. If the pump is junk, you raise the truck, lower the fuel tank, unplug the electronics from the pump at the top of the tank, then with a hammer and flat head scrwedrive, gently tap the lock ring in a counter clockwise direction until it pops off. Pull the pump assembly out and install the new one. Reverse directions to install.
Posted on Jun 02, 2009
This sounds like a classic fuel system problem. Manually check your 1 & 3 plugs to prove /disprove the code. If they're OK, which I'll bet they are, check the fuel pump. If it tests good then you have a fouled gas tank, I'll bet. Especially if you live in the Northwest. If you let it sit with low fuel, the extra air space lets condensation form, causing rust and moisture in your gas. Usually changing the fuel filter will give you some temporory improvement if this is the problem. If it didn't then it could be your air intake not delivering enough flow to give it the proper fuel/air ratio. When's the last time you changed the air filter?
Posted on Nov 17, 2009
Testimonial: "Helped me rule out the fuel system."
It sounds like the engine is starving for gas however it could be a tork converter lock system malfunctioning, first check the transmission fluid is it brownish in color and smells like onions? if yes it needs to have the fluid changed and the filter replaced. Is it low? any amount of low fluid in the transmission it will act differently. Next if the transmission fluid is good, then you need to do a test of the fuel pressure by renting a pressure regulator and testing fuel rail pressure, this is easy to do and can save you some cash. Hook the gage to the schrader valve on the fuel rail, looks like a bicycle tire or car tire plug, hook the gage up turn the key to the run position do not start read the fuel pressure does it go to 40 PSI? yes? then turn key off and watch the needle on the gage does it go below 30 PSI in 60 seconds? If no then turn the key off remove the fuel regulator hose and start the truck does the fuel pressure go to 60 psi? if yes shut off engine watch the gage if it loses pressure after 60 seconds then you have a bad fuel pump check valve so you would have to remove the fuel pump.
One other thing how is your oil pressure? is it running high? Thanks for using fix-ya if you need more help let us know.
Posted on Dec 28, 2009
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