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Old 19-06-2014, 11:37 AM   #1
wis33Y88
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Default Au xr8 220 running rough at top end of revs

Hello everyone I've got an au xr8 ute 220 hand built in the last month it has been running rough around the 4000rpm like it's looking for fuel or not getting enough and if I put my foot down to quick it does the same thing?? Any ideas??

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Old 19-06-2014, 01:44 PM   #2
BOTTLEDUP
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Default Re: Au xr8 220 running rough at top end of revs

Broken valve spring?
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Old 19-06-2014, 11:00 PM   #3
Jarry
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Default Re: Au xr8 220 running rough at top end of revs

fuel pump?
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Old 20-06-2014, 12:13 AM   #4
BEN XT
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Default Re: Au xr8 220 running rough at top end of revs

Leads maybe?
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Old 20-06-2014, 10:02 AM   #5
wis33Y88
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Default Re: Au xr8 220 running rough at top end of revs

Leads plugs and fuel pump have been replaced within the last 5000km
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Old 20-06-2014, 10:13 AM   #6
Jarry
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Default Re: Au xr8 220 running rough at top end of revs

blocked cat?
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Old 20-06-2014, 11:05 AM   #7
wis33Y88
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Default Re: Au xr8 220 running rough at top end of revs

Does anyone know the valve specs on the yella terra ?
I've looked at heaps but just want to double check their the 1.72
Don't want to order the wrong ones
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Old 20-06-2014, 08:12 PM   #8
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Default Re: Au xr8 220 running rough at top end of revs

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Originally Posted by wis33Y88 View Post
Does anyone know the valve specs on the yella terra ?
I've looked at heaps but just want to double check their the 1.72
Don't want to order the wrong ones
Pop a rocker cover, if the rocker has the Yella Terra logo on it they will be 1.72's. If they dont have anything written on them they will be Crane 1.6's. I would near bet being a series 3 it will have YT's on it, by the way it's not a 220 motor. Utes only got the 200 motor.
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Old 21-06-2014, 12:15 AM   #9
wis33Y88
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Default Re: Au xr8 220 running rough at top end of revs

I took the rocker off and their yellas,
And she's a series 2 pursuit and the tb is also 70mm and the yellas so we rang fpv in Melbourne last week and gave them the vin number,
they called back today and they have confirmed its a 220, they slapped a few of them in some utes when they had leftover rebel motors.
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Old 21-06-2014, 11:43 AM   #10
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Default Re: Au xr8 220 running rough at top end of revs

Coil/s ?
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Old 21-06-2014, 08:20 PM   #11
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Default Re: Au xr8 220 running rough at top end of revs

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Originally Posted by wis33Y88 View Post
I took the rocker off and their yellas,
And she's a series 2 pursuit and the tb is also 70mm and the yellas so we rang fpv in Melbourne last week and gave them the vin number,
they called back today and they have confirmed its a 220, they slapped a few of them in some utes when they had leftover rebel motors.
Yep. No worries.
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Old 23-06-2014, 12:20 PM   #12
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Default Re: Au xr8 220 running rough at top end of revs

Does it have an engine oil cooler behind the grill with the lines running to the oil filter block?
Rebels didnt get a special 220 motor ,it was the same 220 all the later series 2 and 3 xr8 got,i think ford just make stuff up sometimes,i dont doubt it could be a 220 motor but that ford story is hell dodgy lol...
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Old 23-06-2014, 12:24 PM   #13
wis33Y88
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Default Re: Au xr8 220 running rough at top end of revs

Yes it has a oil cooler with lines going to the oil filter
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Old 23-06-2014, 12:26 PM   #14
STINKY NINJA
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Default Re: Au xr8 220 running rough at top end of revs

Does the engine number match the vin?
If it does i think i learnt something today,i never knew utes could have the 220 motor!
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Old 23-06-2014, 12:30 PM   #15
wis33Y88
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Default Re: Au xr8 220 running rough at top end of revs

Yes the vin and engine numbers match it's my 4th au but my 3rd v8 n I was the same until I got this one it runs so much better then the last 2 but now I have tis problem is the only reason I've worked out its a 220 from talking to ford in Melbourne
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Old 23-06-2014, 01:06 PM   #16
STINKY NINJA
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Default Re: Au xr8 220 running rough at top end of revs

Did you check for broken springs?
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Old 23-06-2014, 01:10 PM   #17
wis33Y88
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Default Re: Au xr8 220 running rough at top end of revs

I'm pulling the right side off today checked the left side I the other day just because it was easy to get to just a pain taking in intake manifold off but it has to be don't
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Old 24-06-2014, 12:29 AM   #18
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Default Re: Au xr8 220 running rough at top end of revs

Checked all springs today and they are all fine I'm starting to think its coils
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Old 03-07-2014, 01:16 PM   #19
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Default Re: Au xr8 220 running rough at top end of revs

maybe your harmonic balancer my series 3 220 was doing a simular thing changed it out with a new powerbond unit cured the problem
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