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Why would a 2001 Blazer 4.3 timing be missing, sputtering, & act stopped up?

If I push accelerator very much it bogs down like a filter is stopped up, or a fuel line or pump is going out. The engine timing is missing. I'd like to know the best route of the elimination process to avoid replacing good parts.

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  • Expert
  • 74 Answers

Check mass air flow sensor

Posted on Oct 24, 2012

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Posted on Jan 02, 2017

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SOURCE: HELP! HELP! SOMEONE PLEASE ! 2001 chevy blazer fuel problems

I would check to be on the safe side the fuel filter is going in the right direction. The arrow is pointing towards the engine away from the fuel tank, Then you need to make sure the fuel pump wiring connections are good contact and did not come loose when driving.

Posted on Mar 18, 2009

  • 2920 Answers

SOURCE: 1993 Ford Tuarus Gl

have the catalytic converter checked

Posted on Sep 02, 2008

  • 1 Answer

SOURCE: Starts good, idles good but bogs down when accelerating.

its the caburtor, it blocks the fuel from the pump and it also bogs out, factory fault you need to replace the caburator and bypass all the smog stuff, just install the o2 sensor into the air intak hose thats what i did

Posted on Feb 11, 2009

  • 34 Answers

SOURCE: Chevy Blazer won't start; fuel pump needs replacing

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

canbruce75
  • 1776 Answers

SOURCE: 1997 Ford F150 4x4 5.4L

I would take the truck to an autoparts store and have the fault codes retrieved from the computer. Most stores will do the scan for free. I would lean toward a faulty throttle position sensor, but that's just speculation. The fault codes should narrow the problem down. Hope this helped and best wishes.

Posted on Jul 25, 2009

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Acceleration problem


Could be a clogged fuel filter, could also be a slight crack in the throttle body gasket. get a spray bottle with water in it, set it to mist, while the vehicle idles, spray around the base of the throttle body, if it bogs down replace the throttle body gasket. Just curious, was it doing it before you changed the plugs and wires? If not make sure you have the firing order correct.

Dec 24, 2013 | 1997 Nissan Pickup

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Bogs down with little acceleration


run fault codes and look for accelerator position sensor and MAF/MAP problems. Have a pressure test done on the fuel manifold to check for pump, pressure regulator and filter problems.

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91 crx spitts and sputters and bogs out when i go to accelerate


you need a tune up new wires plugs car and rotor and do the air and fuel filter to. after it will be like a new car and the fuel savings will pay for the parts

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98 Honda Civic HX sputters when accelerating. Feels bogged down and lacking power.


Time for the dealer to take a look. You need special skill and special tools to diagnose this not to mention years of experience with electronic engine control systems.

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2000 s-10 stutters/bogs down when accelerating right after startu


Check ignition timing, timing chain, fuel filter and fuel pressure after you change it. ( if the filter doesn't solve it)

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4 Answers

Has trouble accelerating sounds like its missing and is bogging


Sounds like a timing problem to me. I would look at this first. It could be fuel related too. The old carburated engines would act like this when the accelerater pump on the carb would go bad.

Good Luck

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