Question about 2001 Hyundai Accent

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Hyundai accent 2001 -my car is running on 3 cylinders only the 1st one has no compression. (I test the compression by plug/unplug the sparkplug while engine is running). -seen no smoke but can smell the unburnt fuel. - try on new sparkplugs the rpoblem still is. valve problem? please advice me. Thank you.

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  • Hyundai Master
  • 6,826 Answers

Yes, I think that the valve is either broken, or the rings are worn out on the cylinder. More likely a bent or broken valve or stuck valve in the open or closed position.

I would use a compression tester, though, to test how much pressure builds up in each cylinder and to see if it is balanced across the remaining cyilinders.

Posted on Oct 02, 2010

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Posted on Jan 02, 2017

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Why is my Hyundai Accent 2006 cvvt battling to idle after cambelt broke. Was replaced with valves ect. Currently driving without airflow sencor being plugged in. Wouldn`t idle with it plugged in?


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2001 Hyundai accent - runs OK for about 40 miles on interstate. Then car seems to drop a cylinder and runs very rough. The check engine light does NOT come come on and there is no error code


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There were a number of problems with V=8 engines in this Series. Some of the sparkplugs would try to leave the engine on their own. You need more testing to know what is wrong.

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There are 3 causes for a misfire. Fuel, spark, and compression. You can have fuel injectors which are dirty or have bad connections or coils and fail to open consistently. Spark issues are more complicated to diagnose as coils are now attached to individual sparkplugs(some models) and are triggered by Crankshaft and Camshaft sensors. A bad coil-pack feeding each bank of sparkplugs can short out adjacent plugs like #3 and #4.

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There was a Recall on these motors, but a Mileage limit and a time limit of about 7 Years was imposed. Check Internet for articles about all of these subjects, photos, etc.

Please rate my info.

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1 Answer

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cylinder 4 is misfiring this is the most common falut. do a compression test and get the timing checked. they might tell you somthing along the lines of the coil needs to be replaced or plugs and cords.

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Oil Burning


you can buy a overhead cam valve spring compressor [cheap]
use compressed air I special sparkplug adaptor which will hold up the valves! [one cylinder at a time]
no need to remove the head
Cheers Rob

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My 2000 hyundai acc


Possibly coils check compression make sure the plugs are the proper ones some engines are particuler about the plugs

Mar 04, 2009 | 2000 Hyundai Accent

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