Just got a J1 and i need advice!!! - Hyundai Forums : Hyundai Forum
 
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#1 Old 01-06-2012, 03:07 AM
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Question Just got a J1 and i need advice!!!

Hi All

I am quite new to the hyundai side of life and just got my hands on a decent J1 GLS Elantra, the car has a problem though, sometimes she loses alot fo power between 2 and 3K RPM and then picks back up again, it happens all the time.
Yesterday while pulling off at an intersection i must have had about 2HP or something because the car just spluttered till i got over the intersection, the previous owner fitted a set of branches and what looks like a free flow exhaust.
i just cant seem to figure her out though...should i get the ECU checked and maybe remapped? The car is not really powerful enough for me, but before i decide on doing anything extra to her, i need to get this issue sorted...any help will be appreciated.
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#2 Old 01-07-2012, 04:24 AM
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carfreak09
The spark plug cables could be arching due to a break in their insulation, which would cause a drastic loss of power/jerking/shuddering upon acceleration that would be rpm dependent. I would start with replacing the cables and the spark plugs, especially if it hasn't had a tuneup in awhile.
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#3 Old 01-10-2012, 04:08 AM
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Quote:
Originally Posted by carfreak09 View Post
The spark plug cables could be arching due to a break in their insulation, which would cause a drastic loss of power/jerking/shuddering upon acceleration that would be rpm dependent. I would start with replacing the cables and the spark plugs, especially if it hasn't had a tuneup in awhile.
Thanks i will try it out and let you know
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#4 Old 01-17-2012, 04:56 AM
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Hey Car Freak, just checked the car out, bought a set of plug leads, these were incorrect(lead ends on the spark plug side were too long) did a further check into the intakes and found that the hose running from the airbox was broken on the EFI side and this was sucking air decreasing the airflow into the engine...pulled it off and she wouldnt even rev...so i pushed it in as far as it would go and she now runs perfectly(sometimes the smallest things)
I need some advice on running a different intake, preferably a Cone filter with a steel intake pipe...any advice on how i can do this?
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#5 Old 02-20-2012, 01:54 AM
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selected4car is an unknown quantity at this point
right

Quote:
Originally Posted by carfreak09 View Post
The spark plug cables could be arching due to a break in their insulation, which would cause a drastic loss of power/jerking/shuddering upon acceleration that would be rpm dependent. I would start with replacing the cables and the spark plugs, especially if it hasn't had a tuneup in awhile.
i've meet the problem,and change one of the sparks,then it works!
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