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Honda accord run rough and shaking at start then clear up

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Running rough & shaking, does not provide us with
any test results, or anything to work with. to suggest
something

We need to know if fuel pressure was checked ,spark across
all cylinders,fuel trim,vacuum leaks,things smoke tested

If your going to go to a shop any way-- do so or say so

If they can't resolve --give us the info to help you

Posted on Dec 10, 2012

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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Annimater
  • 37 Answers

SOURCE: STARTS RUNS ROUGH BUT YOU CARNT TOUCH ACCELRATOR AS IT DIES STRAIGHT AWAY

The list of things to check is long and for the most part basic. I'd start with general tune-up diagnostics. My money is on the the dist cap & rotor as your culprits -these get the most wear, easiest to fix and the 1st place I'd look. It will cause it to run rough and die when you accelerate because it is not firing or firing the wrong cylinders. It may look good but still have a crack that you can't find. But I predict you will find a nice little pile of carbon dust and states of corrosion on the rotor & pins in the cap like I did when I had the same problem on my Civic a few years ago.

If that doesn't do the trick, you want to start by determining if it is dying from too little fuel or a weak spark
Weak spark will cause flooding- too much gas leftover after a weak spark eventually floods the engine- you will probably smell gas at the throttle body and you will have to wait before it will start again due to flooding. Not an absolute diagnostic, but if you smell fuel you can be pretty sure your problem is ignition or emissions related. It may still be an emissions component such as EGR or even a clogged cat or a potato stuck up the tailpipe.
Lean fuel conditions point to the fuel filter, fuel rail and fuel pump pressures and injectors.

General tune-up diagnostics:
Ignition: dist cap & rotor; Check plugs and wire conditions; Ignition coil or transistors may be bad but not causing a total loss of spark
Fuel & Emissions: Fuel filter, fuel rail pressures, EGR & PCV valves; check diagnostic codes from your OBD it might give a clue.
Hows your compression and timing? If you have over 90Kmiles and you haven't replaced your timing belt it may have stretched or jumped a gear notch. If this is the case you should change it before it breaks and bends your valves, causing expensive damage to the valve train.
If you want to fix your own then pick up a Haynes manual for your model and pick up the Haynes emissions & fuel injection books to demystify emissions computer codes, troubleshooting and repair. You can probably borrow these from your library or pick them up cheap at a used book store if money is tight.

Posted on Apr 30, 2009

co7196
  • 3433 Answers

SOURCE: running rough, wont idle, bad gas smell

Possible injector failure. locate by disconnecting injectors one at a time. The one that makes no change is the questionable. Status of spark plugs need chkg also. pull the plugs an the one that looks washed is questionable good luck

Posted on May 22, 2009

  • 150 Answers

SOURCE: 92 Honda Accord LX- idles rough when started up

sticking valves. the short run of the engine free's them enough to enable runnig

Posted on Aug 14, 2009

  • 30 Answers

SOURCE: 2005 honda accord, rough idle and malfunction

I would take it to a local Auto Zone, or Advance Auto, they can run it through the diagnostic computer and see what codes are tripping, most likely it's going to be for a cylinder mis-fire, i would try making sure all the plugs are good, and check and see if all the plug wires are secured tightly.

Posted on Nov 16, 2009

  • 3 Answers

SOURCE: 1995 HONDA ACCORD ROUGH IDLE

could possibly be an intake gasket

Posted on Apr 20, 2010

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