UK Hyundai Accent Club Forums - car not running right

maxdaccent

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car not running right
Mar 9^th, 2010 at 5:38pm

so recently over the last couple of weeks my car seems to be running different from normal, ie dont seem to have any pull really, exhaust note is much quieter than normal, to me something is wrong, then the other week when filled up with petrol it seemed to all be running how it used to much more noise, lots of pull etc and also was a time for its 90000 mile service which i hoped would make it even better which it did for the day and now its gone back to the way it was quiet again and lack of pull. Any idea what this could be?

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2001 HYUNDAI ACCENT MVI RUNNING 87.16WHP
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Nikkei Mad about Accents Offline UKHAC Posts: 805 Reputation: 3 Manchester	Re: car not running right Reply #1 - Mar 10^th, 2010 at 1:57pm pull out the plugs and check the colour on them,it should be a brown ish colour,if any other colour then you may need new plugs and get a new fuel filter if you not change the old one 1 b4.
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maxdaccent 2001 Hyundai Accent Mvi 1495cc UKHAC Admin LC (2000-02) Offline UKHAC Member Posts: 1054 Reputation: 8 Essex	Re: car not running right Reply #2 - Mar 10^th, 2010 at 5:45pm changed the plugs during the service so they are fine but might be the fuel filter causing the problem.
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maxdaccent

2001
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1495cc

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Essex

Re: car not running right
Reply #3 - Apr 14^th, 2010 at 6:04pm

ok ive still got this issue although now its staying, the car is just not picking up at all and the exhaust sounds really quiet but when you let off the revs or rev it up i get a really bad tinny/raspy sound almost like the baffles in the exhaust have gone. Would this make me believe that mt CAT has gone/going hence the change in the way the car perfoms?

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Soul

1998
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Re: car not running right
Reply #4 - Apr 14^th, 2010 at 7:48pm

Hmm ... could very well be the CAT mate, especially since pretty much everything else seems to be ok.

I suppose the only way to find out would be to remove the CAT and give it a shake Roll Eyes

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Nikkei Mad about Accents Offline UKHAC Posts: 805 Reputation: 3 Manchester	Re: car not running right Reply #5 - Apr 15^th, 2010 at 12:37pm unless you been running rich mix thats bad for the CAT.whats the mileage?
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maxdaccent 2001 Hyundai Accent Mvi 1495cc UKHAC Admin LC (2000-02) Offline UKHAC Member Posts: 1054 Reputation: 8 Essex	Re: car not running right Reply #6 - Apr 15^th, 2010 at 12:59pm its got 92400 roughly on the clock but was serviced at 91714 but had the same issue before that too but after the service it sorted itself out a little but again has now started to do the same ie have no pull, exhaust note very quiet compared to normal and overall i know something is wrong
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Nikkei

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Re: car not running right
Reply #7 - Apr 16^th, 2010 at 10:39am

are you using more fuel or same? dose it need oil top up within 1 week or 400-600 miles? it sound like either block injectors or dirty lamba sensor but its hard to pin down whats going on. Undecided

pull one of the injector out see any carbon buildup also change the fuel fillter.give the air sensor a clean.if that dont work then maybe get a ecu reading see any sensor is not working also can you get a compression test

.

if your cat is gone you will get more pull and deeper note cause the exhust gas flow is onlonger held back by the cat.by decat you have more flow which makes few bhp so i dont think its the cat.

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« Last Edit: Apr 16^th, 2010 at 10:44am by Nikkei »

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Soul

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Re: car not running right
Reply #8 - Apr 16^th, 2010 at 12:14pm

Nikkei wrote on Apr 16^th, 2010 at 10:39am:

...if your cat is gone you will get more pull and deeper note cause the exhust gas flow is onlonger held back by the cat...

Errr, no Nikkei Roll Eyes

... if the CAT is damaged, normally the baffles inside break off and all sit at one end blocking the exhaust flow - hence lack of power (and normally a very hot CAT - possibly even glowing)

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BIG CPW (CHRIS) Mad about Accents Offline UKHAC member Posts: 632 Reputation: 2 northamptonshire	Re: car not running right Reply #9 - Apr 21^st, 2010 at 1:05am yeah if cats gone it will block the exhaust and restrict it causing power loss.
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Nikkei

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Re: car not running right
Reply #10 - Apr 23^rd, 2010 at 12:02pm

Soul wrote on Apr 16^th, 2010 at 12:14pm:

Nikkei wrote on Apr 16^th, 2010 at 10:39am:

...if your cat is gone you will get more pull and deeper note cause the exhust gas flow is onlonger held back by the cat...

Errr, no Nikkei Roll Eyes

... if the CAT is damaged, normally the baffles inside break off and all sit at one end blocking the exhaust flow - hence lack of power (and normally a very hot CAT - possibly even glowing)

hmm...true say Cheesy

lets see what the update is,i bet its not the CAT Roll Eyes

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« Last Edit: Apr 23^rd, 2010 at 12:02pm by Nikkei »

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