Question about 2006 Mitsubishi L200 2.5

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BACK FIRING THROUGH THROTTLE BOY

WE ALREADY CLEAN & GRINDING THE VALVES ,TIMING BELT CHANGED(,TIMING ARE CORRECT) BUT THERE IS BACK FIRE NOW THROUGH THROTTLE BODY. IF WE RAISED THE VEHICLE WILL RAISED SLOW DOWN BACKFIRE IS OCCUR

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  • 7,353 Answers

May be valve adjustment? lean? Is it rhythmic or random? If its rhythmic find out which cylinder has the problem disconnect each spark plug until the back firing stops.

Posted on Jun 02, 2012

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6 Suggested Answers

Anonymous

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Posted on Jan 02, 2017

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Anonymous

  • 94 Answers

SOURCE: timing problem

Hi, The firing order is 1-2-3-4-5-6   Cyl. # 1-3-5 is on passenger side # 1 is in front of motor and Cyl # 2-4-6 is on drivers side # 2 in front of motor.

Posted on Dec 01, 2008

Anonymous

SOURCE: Back Fires

Could you advise on the setting of gears to the timing belt

Posted on Oct 18, 2008

c17hydro

Greg Bernett

  • 2989 Answers

SOURCE: need engine specs for mitsubishi pajero 1996 3.5 lt 24 valve dohc

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Here ya go....get the rest of the info right now.

Posted on Mar 26, 2009

mihalj kis tiskei

  • 59 Answers

SOURCE: 92 mighty max broke the

the timing belt is not on exact plas mor the timing of theplags are not exact ignition timing for 4 cylinder is 1,3,4,2 for a six sylinder is 1,5,3,6,4,2

Posted on Nov 13, 2010

saailer

David Burbee

  • 1871 Answers

SOURCE: 2001 eclipse started bogging had plugs wires cap

Hello! The Top Dead Center Sensor is the most likely culprit...However, it is not sold as a separate item and is part of the distributor...The cost of which is $350...I would suggest having the vehicle hooked up to a diagnostic machine to be certain...A diagnostic check should be under a $100...See distributor picture below...

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Guru...................saailer

I’m happy to help further over the phone at https://www.6ya.com/expert/david_6df67de3b14de867

Posted on Nov 23, 2010

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When you state you have a "Cap & Rotor", indicating an engine, which may possibly be OLDER than the 1994 S-10 it is in. A Crank positioning sensor, on a full throttle body, (or do you mean carburetor/combo/injector system) Not the true name, but, in appearance, looks like a carb. It has a "pulsating" injector within the opening of the butterfly/mouth of the throttling body. When you have an ECM, or Computer Command timing, with a crank sensor, you will have 2 coil packs for 4 cylinder, a 3 coil pack for a V-6. They will be just under the electric cooling fan for the radiator. If you are driving a "bought used" vehicle, and the Cap, Rotor, & wires are only accessed thru the RH wheel well, it is a "Distributor System" & an OLDER engine. The Back fire is being caused by a "jumped" timing belt, or HOPEFULLY, a crossed spark plug wire.

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The reason I'm checking the timing belt is that there is mis-fire in 1 & 2 cylinder. If the firing order is 1,2,3,4. I have continues fire out of 1 & 2, when plug wires are pulled out of head. 3...


unplug the fuel injectors, check the olhms on all. the readings should all be the same, around 11-11.5 olhms. Any readings that are higher is a sign of a bad injector which is what your problems sounds like., putting to much fuel to a cylinder causing different fuel amounts to each cylinder and causing it to backfire out of the throttle body , excess fuel . Also remove the throttle body and clean with cleaner and a toothbrush after replacing any injectors. Or there's a simpler answer and that the cambshaft is worn-out/round causing the lifters not to open enough to let in all the fuel. A worn belt would not cause misfires only on select cylinders but rather jump timing, slipping a notch on a gear and possibly bending a valve or valves and this cause a loud clacking or a really a sign to quit running the motor because it's broke! Good luck.

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