Question about 2000 Chevrolet Blazer

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I replaced the fuel pump and pressure regulator. ita still running bad ,it will back fire like it will stall when you push on gas.

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Can you send me something where the fuel pump is

Posted on Aug 23, 2010

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Car runs fine at times then will not start. Sprayed carb cleaner in air filter and then it starts but dies when i start. The next day car starts and runs fine.


It sounds like your car isn't getting the proper amount of gas. You say your mechanic changed the fuel pump and the regulator. Id have him run a diagnostic tool on it to see if it throws any other codes. Its getting fire. Try changing the FUEL FILTER. it maybe clogged. maybe the pressure regulator is not giving it enough pressure to push the gas into the engine or maybe the fuel pump is only working at times. Does it run good and then start to spit and spudder then die? if so its not getting gas some how. Idk if you can adjust the pressure regulator or not. i mostly work on old school cars.

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I have a 1991 Chevy Suburban 57 liter throttle body injection started running rough couple of days ago yesterday started back firing and Bellowing black smoke out of the tailpipe it stalled a couple of...


Too much gas. Maybe the fuel pressure regulator has failed. Pull off the vacuum hose to the regulator-if any evidence of gas in the vacuum line, regulator is bad-diaphragm has ruptured and letting in extra gas to engine through the vacuum line.
If that is good, no gas in vacuum line, have the fuel pressure checked. Still possible the regulator is not right.
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Dec 11, 2013 | Cars & Trucks

1 Answer

Starts but stalls right away


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Nov 24, 2012 | Cars & Trucks

1 Answer

My car will not start in the mornings or any extended periods of time .It will start after it has run for a while.It spits and sputters and shakes when trying to start it.When it does start and I press on...


here are a few possibilitys, a bad fuel pressure regulator . the vehicle runs rough, the engine will not start ( usually in mornings ) many times engine starts but stalls shortly after starting. a bad regulator can result in fouled plugs. replacement is only cure. black soot on plugs, blake smoke from tailpipe, running rough, stalling. make sure fuel filter is not plugging up. or low fuel pressure from fuel pump. check fuel pressure regulator first. have a good day !! the regulator if bad will cause an instant drop in fuel pressure when turned off. and it will cause a delay in building sufficient fuel pressure,.when starting.

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Driving 60mph power drops as though out of gas. Coast 2-300 yds pump gas pedal van back to normal. Now at home it starts then stalls, will only run 5-10 seconds. New plugs&wires distributor cap and...


signs of a bad fuel pressure regulator. the vehicle runs rough, the engine will not start usually in the mornings. many times engine starts but stalls shortly after starting. a bad regulator can result in fouled plugs. black soot on plugs, blake smoke from tailpipe, running rough, stalling. you could have residue in fuel tank and need to change fuel filter again. have a very good day !!

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My s10 blazer you have to keep pumping the gas to keep it running if you push it all the way down it will stall changed the plungs and wires thanks for any help you can give


Check the fuel pressure at the shredder valve. There should be 60 to 65psi with the fuel line primed and engine not running, with the engine running there should be a 5psi drop. Any other reading will give you starting or running issues. You can try replacing the fuel filter first which is located on the inside frame rail under the driver's door, but keep in mind that the spider fuel system in your blazer is know to go bad. The fuel pressure regulator is the most common and the fuel pump also is common to go bad with a life expectancy of around 150,000 miles and anything more then that is on borrowed time. Good luck and keep me posted, start with the fuel filter replacement and checking the fuel pressure at the shredder valve. Not do not try to start the blazer by poring fuel in the throttle body, it's been know for the excess fuel to catch fire and burn up the spider injector nozzle in the manifold. 

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The 93-94-95 all have this problem ..the fuel line that come into the back do split and leak ..other problem is with vaccum lines coming off the back of intake and vacuum lines come apart from a 3 way fitting.located fire wall .when these are off will cause gas smell and bad millage .... hopes this helps...

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