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Missing/hesitated power problem 

 

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 Post subject: Missing/hesitated power problem
Posted: Wed Apr 03, 2013 9:46 pm 
Stock as a Rock
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Age: 31

Posts: 116

Joined: 18th Jul 2010

Gallery: 10 images

Ride: xp falcon, xt falcon, xh xr6

Power: 182 rwkw

Location: melbourne
VIC, Australia

Hi guys,
Been having some problems with my au xr8 recently. Getting worse and worse.
Mainly when it's cold but first morning start up taking off normally it starts to miss, cough and running really rough and seems like a pulley belt screech. Then when it warms up it doesn't seem as back but still misses breifly. I put new plugs, and has new performance ignition system. It's been tested and they can't fault the ignition and diagnostics can't pick anything up.... Car is manual if they makes a difference....
Maybe crank angle sensor? Crook injector?? Any helps appreciated

Thanks
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 Post subject: Re: Missing/hesitated power problem
Posted: Wed Apr 03, 2013 10:12 pm 
Getting Side Ways
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Age: 41

Posts: 3785

Joined: 5th Nov 2004

Ride: Ford

Location: Victoria
VIC, Australia

Harmonic balancer or cam syncroniser.

 

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 Post subject: Re: Missing/hesitated power problem
Posted: Thu Apr 04, 2013 7:29 am 
Stock as a Rock
Offline

Age: 31

Posts: 116

Joined: 18th Jul 2010

Gallery: 10 images

Ride: xp falcon, xt falcon, xh xr6

Power: 182 rwkw

Location: melbourne
VIC, Australia

Maybe the balancer but the cam is chain driver. That can't change..... I think it may be electrical or fuel related. Is it common for crank sensors to go? Car has done nearly 200,000k's
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