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Cylinder problem 

 

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 Post subject: Cylinder problem
Posted: Wed Sep 05, 2012 4:36 pm 
Parts Gopher
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Age: 31

Posts: 93

Joined: 14th May 2011

Gallery: 8 images

Ride: Ford Falcon FG F6

Location: Perth
WA, Australia

Ok guys got an unusual thing happening.

My car is starting on 4 or 5 cylinders in the morning but then after it warms up 10mins or so it drives with six beautifully. This happens every single morning and then drives fine throughout the day until the next morning. (it seems that something expands in the heat of the engine and makes a connection but then the next morning car is cold and stutters on 4 or 5 cylinder until it warms up)

So I took my car to the RAC and they've had the car for 4 days now and still cant figure out the problem. The list of things they have done are.

-Changed the throttle body and sensor as my computer had many error codes (error codes are now cleared)
-Replaced all the spark plugs (NGK iridium)
-all coil packs have great spark
-checked the cam timing (good)
-checked gasket for leak (all good)

Any Ideas? Even there FORD tech is stumped, they said they've tried to call FORD about the problem as well.

 

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08 FG F6 #326. 4" Xforce exhaust turbo back with mid muffler delete, 1000cc injectors, 20% Underdrives, Stage 2 intercooler and piping, Stage 2 gear box, Upgraded flex plate, upgraded transcooler, upgraded fuel pump, Streetfighter air intake, cooler thermostate, SCT tune at 20psi at 406rwkw

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 Post subject: Re: Cylinder problem
Posted: Wed Sep 05, 2012 7:32 pm 
Technical Contributor
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Ride: EF Fairmont

Location: Campbelltown
NSW, Australia

Have you checked compression on each pot?

Could be headgasket leak and water getting into the cylinder and when it startes the water is pushed out the exhaust.
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 Post subject: Re: Cylinder problem
Posted: Wed Sep 05, 2012 9:56 pm 
Getting Side Ways
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Age: 26

Posts: 789

Joined: 9th Dec 2011

Ride: S1 eb 5speed

Location: Coffs Harbour
NSW, Australia

We have a BA turbo in ATM with the same issues.
We have sent the ECM away for testing.
When cold there is no injector pulse at cyl 5 and as the vehicle warms up the injector begins o get signal slowly untill it is at temp and has full pulse signal.
Thinking a dry/broken/weak solder join in the computer itself. Will report back when we know.
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 Post subject: Re: Cylinder problem
Posted: Wed Sep 05, 2012 10:00 pm 
Getting Side Ways
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Age: 26

Posts: 789

Joined: 9th Dec 2011

Ride: S1 eb 5speed

Location: Coffs Harbour
NSW, Australia

Surly they have checked for injector pulse tho.... Right? Hopefully. Pretty obvious if it isn't spark related to go there
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