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My BA's misfire 

 

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 Post subject: My BA's misfire
Posted: Sun Mar 24, 2013 11:06 am 
Parts Gopher
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Age: 25

Posts: 66

Joined: 13th Mar 2012

Ride: 2003 BA Falcon XR6

Location: Adelaide
SA, Australia

Hi guys.

I've just bought myself a new ride - a 2003 BA XR6 Falcon.
I have noticed it has a rough idle, I think it's been there since I bought it.

Anyway, it only seems to be a really slight misfire but it causes a slight shudder on idle.
It's never stalled or anything, and only seems to drop 20rpm and then surge back to normal for a couple of seconds and then does the same thing again.

I have done a full TB clean, an oil change with Castrol Edge... 5w which I think is a bit thin, maybe when it needs a top up I will thicken it a bit.
Also has new Bosch fusion spark plugs and new coils.
None of this seems to have made a difference.
I also got my guys at CMI to do a EFI flush for me.

Next thing I expect it might be would be a vacuum leak somewhere.
Would this line up with the symptoms?

I am going back to CMI to talk to some people and see what else they might be able to help with short of bringing it to a Ford dealer and being poor forever as a result.

Does anyone have any suggestions as to what else it might be?
It doesn't seem to misfire under load at all, I assume it would be obvious if it did.

Thanks all!
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 Post subject: Re: My BA's misfire
Posted: Sun Mar 24, 2013 11:38 am 
Getting Side Ways
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Age: 25

Posts: 4599

Joined: 30th Aug 2010

Ride: BF XR6,

Location: NEWCASTLE
NSW, Australia

What fuel do you run it on

 

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 Post subject: Re: My BA's misfire
Posted: Sun Mar 24, 2013 11:47 am 
Parts Gopher
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Age: 25

Posts: 66

Joined: 13th Mar 2012

Ride: 2003 BA Falcon XR6

Location: Adelaide
SA, Australia

98 Premium :)
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 Post subject: Re: My BA's misfire
Posted: Sun Mar 24, 2013 11:50 am 
Getting Side Ways
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Age: 25

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Joined: 30th Aug 2010

Ride: BF XR6,

Location: NEWCASTLE
NSW, Australia

Coretex wrote:
98 Premium :)

Ok just thought you may not reslise its gotta run premo which will cause it to run crappy

 

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BF XR6
xr8 snorkel,typhoon lower snorkel,territory intake pipe,20% underdrive kit,pacemaker extractors,high flow cat,xforce exhaust,t56 conversion hd turbo clutch/ flywheel,m86 3.45 lsd,custom tune187.1rwkw as an auto

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 Post subject: Re: My BA's misfire
Posted: Sun Mar 24, 2013 2:36 pm 
Parts Gopher
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Age: 26

Posts: 84

Joined: 30th Dec 2010

Ride: BA Xr6

Location: Emerald
QLD, Australia

Could be a long shot but fuel filter?
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 Post subject: Re: My BA's misfire
Posted: Sun Mar 24, 2013 2:42 pm 
Parts Gopher
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Age: 25

Posts: 66

Joined: 13th Mar 2012

Ride: 2003 BA Falcon XR6

Location: Adelaide
SA, Australia

It could be, it doesn't seem to have any kind of pattern, it just randomly misfires when it's idling.
I might look up how to change the filter and give that a crack.

Do you think doing an ecu reset is worth the effort?
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 Post subject: Re: My BA's misfire
Posted: Sun Mar 24, 2013 7:03 pm 
Parts Gopher
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Age: 26

Posts: 84

Joined: 30th Dec 2010

Ride: BA Xr6

Location: Emerald
QLD, Australia

While your changing the filter it couldn't hurt it isn't hard to change at all it is on the inside of the left hand chassis rail, do you ever let your car get real low on fuel? Allowing the pump to suck up the crud on the bottom?
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 Post subject: Re: My BA's misfire
Posted: Sun Mar 24, 2013 7:06 pm 
Parts Gopher
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Age: 25

Posts: 66

Joined: 13th Mar 2012

Ride: 2003 BA Falcon XR6

Location: Adelaide
SA, Australia

Coreys0 wrote:
While your changing the filter it couldn't hurt it isn't hard to change at all it is on the inside of the left hand chassis rail, do you ever let your car get real low on fuel? Allowing the pump to suck up the crud on the bottom?



Hey yeah, this is sounding good, I am going to give it a shot!
Thanks for letting me know where it is Corey.

When I bought the car (2 weeks ago) it had so little fuel I had to get some on the way home so I would actually make it. So if that's any indication, i'd say the previous owner most likely ran it dry more than once.

I'm pretty excited now, I really really hope it's that simple.
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 Post subject: Re: My BA's misfire
Posted: Sun Mar 24, 2013 8:54 pm 
Parts Gopher
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Age: 25

Posts: 66

Joined: 13th Mar 2012

Ride: 2003 BA Falcon XR6

Location: Adelaide
SA, Australia

I'll get the filter changed and get back to you all :)

Thanks for the input!
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 Post subject: Re: My BA's misfire
Posted: Fri Mar 29, 2013 1:41 am 
Getting Side Ways
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Ride: BF F6 Tornado - #0077

Location: Bendigo
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I would check to see if the ECU has had its update.

There was an issue with the cam timing where the solenoids got gummed up over time & didn't phase correctly. Ford released a flash update during service that purged the solenoids & cleaned everything at start. this could be part of it?? maybe??

other than that, go for the basics... Inlet gasket. Have fun replacing that one :P

 

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 Post subject: Re: My BA's misfire
Posted: Fri Mar 29, 2013 9:04 am 
Parts Gopher
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Age: 25

Posts: 66

Joined: 13th Mar 2012

Ride: 2003 BA Falcon XR6

Location: Adelaide
SA, Australia

fiftyone wrote:
I would check to see if the ECU has had its update.

There was an issue with the cam timing where the solenoids got gummed up over time & didn't phase correctly. Ford released a flash update during service that purged the solenoids & cleaned everything at start. this could be part of it?? maybe??

other than that, go for the basics... Inlet gasket. Have fun replacing that one :P


Thanks Fiftyone!
I would have to bring the car to ford to do that update yes? Probably won't cost too much :)
As for the inlet gasket, I'm going to use some propane or something to check for leaks today... Might get it replaced anyway, I can get the ford guy at work to do that one :P

Thanks mate!
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 Post subject: Re: My BA's misfire
Posted: Fri Mar 29, 2013 2:04 pm 
Getting Side Ways
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Age: 30

Posts: 3737

Joined: 22nd May 2006

Ride: BF F6 Tornado - #0077

Location: Bendigo
VIC, Australia

Ask ford for a quote, if they're too pricey (more than say $50 or so) forget about it.

But yeah, definitely the gasket. Check it good

 

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** For Sale ** http://www.fordmods.com/ford-parts-for-sale-f17/assorted-e-series-parts-t124697.html

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Is it about sex? The engine in my car? Or a cure for cancer?
No?

Then f**k off

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 Post subject: Re: My BA's misfire
Posted: Fri Mar 29, 2013 2:33 pm 
Parts Gopher
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Age: 25

Posts: 66

Joined: 13th Mar 2012

Ride: 2003 BA Falcon XR6

Location: Adelaide
SA, Australia

fiftyone wrote:
Ask ford for a quote, if they're too pricey (more than say $50 or so) forget about it.

But yeah, definitely the gasket. Check it good


Since I work for CMI I might be able to wrangle some trade rates...
Worth a try at least :D

But yeah I'm going to have a good look at it this Arvo :) I'll report back if I find anything :)
Cheers mate
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 Post subject: Re: My BA's misfire
Posted: Tue Apr 02, 2013 7:36 pm 
Parts Gopher
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Age: 25

Posts: 66

Joined: 13th Mar 2012

Ride: 2003 BA Falcon XR6

Location: Adelaide
SA, Australia

Hi guys!

I had a bit of a go with some propane and some carby cleaner.
I think I found something!!!!

I sprayed around the gasket with some carby cleaner and I get it in this one spot, and a second or so later the idles dropped off for a second and came back again.
I couldn't replicate it, but I think as the cleaner ran down over the gasket it might've hit a hole in the gasket or something?
Does this sound right?

Not to mention when I was finished it took a lot longer to start the engine than it would normally.

I think I have found the cause.

I will get the guy at work to have a good look for me I reckon.

I also called Stillwell Ford here in SA, and they quoted 65 bucks for the ECU update and code check.
I know this is fkn steep, but I will probably get it done anyway. Just so I can cross it off the list :)

Let me know what you guys think of my findings!
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 Post subject: Re: My BA's misfire
Posted: Sat Apr 06, 2013 6:13 pm 
Parts Gopher
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Age: 25

Posts: 66

Joined: 13th Mar 2012

Ride: 2003 BA Falcon XR6

Location: Adelaide
SA, Australia

Filter done with no change, and the car got it's ecu update and code check today as well.
They also did a power balance and said there is a slight misfire on cyl 1.

Seems to be having more episodes of being really hard to start...
Like its getting worse, the acceleration at low revs seems to be getting worse too.

I still think its a vacuum leak, just might be getting worse and letting more air in.
She's booked in for Friday to get the intake system and the solenoids looked at :D
Hopefully that fixes it all!
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