Question about Hyundai Sonata

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Wont idle runs rough

I had a bad harmonic balancer which ruined the timing belt cover. so while i had it off i decided to change timing belt. i put every thing back together correctly but when i go to start it it will barely run. so i took it back apart and the belt had jumped teeth. i put everything back in to time and tried again with the same result. it is running terrible. and did anything else get ruined inside the motor as a result of this?

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  • Master
  • 957 Answers

Sometimes when engine jumps time it can cause the valves to get bent because engine is does not fire in order like it should.

Posted on Mar 31, 2014

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  • 2 Answers

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Posted on Jan 02, 2017

robshow
  • 367 Answers

SOURCE: Kia Optima

Is the car flashing any codes. I would look for fuel issues possibly fuel filter, injectors etc. Because these items are easier to check. Otherwise it sounds as if the timing is off on the car. If the Hydraulic tensioner is not replaced this could cause the belt to jump teeth as well. PRETTY SURE YOUR TIMING IS STILL OFF

Posted on Jan 02, 2009

  • 87 Answers

SOURCE: Harmonic balancer bolt direction for loosening??

CCW , and your going to at least put the new timing belt on and balance to check for compression. you can run an engine without the covers installed or accessories hooked up

Posted on Feb 07, 2009

  • 1 Answer

SOURCE: 2002 KIA Sedona running rough

i may have an answer for you i have an imported v6 3.8 it has recently developed similar problem, i have been looking on www.kiatech.com whcih is very informative, there is a technical bulletin on my model (06) that refers to possibility of faulty o2 sensors which may or may not be the cause of the problem, it also gives me part numbers, check out the site look up your own model it may give you the answers
you can check out the main manuls or look up past technical bulletins (tsb)
good luck

Posted on Mar 24, 2009

flacooo1
  • 172 Answers

SOURCE: 1996 timing belt changed, lined up all the marks,

Hi my name is juan and lets try to solve this it is possible that when you rotated the camshaft the distributor last his position and this is why it won't start it may not be the problem but this happens a lot so open your distributor and aline up your marks on camshaft and the crankshaft then make sure the distributor is pointing near the #1 spark plug if is opposite give it a 1 more turn to the crankshaft line up your marks again and se what happens #1 spark plug is the closets to the front part of the engine on 4cil

Posted on Mar 26, 2009

landsend
  • 1066 Answers

SOURCE: 2002 Kia Rio runs rough when idling

well spend some change and have a simple tune-up.  Plugs and filters and readjust the idle.

Posted on Apr 01, 2009

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1 Answer

Changing harmonic balancer


Nope! Why don't you give the mechanic a tune to see if it's running rough because of lean mixture, fail ignition coils, worn spark plugs....could be one of those things. Because when yours is rough at idle, it means the mixture is not right, more likely be lean or one or more cylinders not igniting properly. Got nothing to do with harmonic balancer. But do check motor mount for cracks, but faulty mounts only give you excessive movement that you can really feel it KICKS when you change from P - R - D.

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I would guess your timing belt has jumped a cog or two, and should be replaced. When you aim a timing light at your harmonic balancer, the marks should stay in one position. If the marks are jumping around, your belt has jumped.

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Do you have a 1.8T or the V6?

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1 Answer

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