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Discussion in 'Engine/Tuning' started by boostmonkey, Jul 20, 2005.
Does anyone have a copy of TSB 03-25-6 any help would be appreciated
I found this?
There is a TSB for ticking Romeo 2Vs:
Article No. 03-25-6 Dec. 11th 2003
ENGINE - ROMEO BUILT 4.6L 2V - TICK NOISE FROM ENGINE - ENGINES BUILT BEFORE 9/17/2003
Some vehicles, equipped with the Romeo built 4.6L 2V engine, with an "ENGINE BUILD DATE" prior to 9/17/2003 may exhibit an engine tick noise that is present at all temperatures during idle. The noise may be emanating from the valve guide area in the cylinder head. The noise may be more prevalent in the front wheel well area and may not be heard with the hood open.
Follow the Service Procedure listed in this article to properly evaluate/diagnose the vehicle condition.
NOTE: THIS ARTICLE APPLIES ONLY TO VEHICLES WITH A "ROMEO ENGINE" BUILT BEFORE 9/17/2003 (ENGINE BUILD DATE NOT VEHICLE BUILD DATE). THE ENGINE BUILD DATE IS TYPICALLY FOUND ON THE ENGINE LABEL LOCATED ON THE VALVE COVER.
1. Verify the source of the noise by placing a stethoscope on the back of the cylinder head near the exhaust ports.
2. Verify that the noise is heard in the exhaust system (in the wheel well or catalytic converter area, from underneath the vehicle).
3. Verify that there are no exhaust manifold leaks.
4. Verify that the tick noise is still present when canceling each cylinder, by unplugging the injectors one at a time.
5. Check to make sure that the camshaft spacers are in place. If not, install cam spacers (per Workshop Manual Section 303-01) and retest vehicle.
6. Check for proper cam sprocket bolt torque, re-torque to specification (per Workshop Manual Section 303-01).
7. Check hydraulic lash adjusters for a possible "spongy" condition (refer to Workshop Manual Section 303-00).
8. Verify that the timing chain tensioner pin has been removed. If the above diagnostics do not eliminate the noise while the cylinders are cancelled, replace the cylinder head and cam assembly with Part Number 4L3Z-6049-AA (RH) or 4L3Z-6049-BA (LH). Refer to Workshop Manual Section 303- 01 for cylinder head replacement procedures.
NOTE: THE REPLACEMENT CYLINDER HEAD WILL NOT IMPROVE OR REDUCE PERFORMANCE.
PART NUMBER ----- PART NAME
4L3Z-6049-AA --- Cylinder Head Asy - RH
4L3Z-6049-BA --- Cylinder Head Asy - LH
Do you have a 2V or 4V?
I have a 4v. I have an 03 cobra I called svt and they said this was the tsb I should present to my dealer???
The explanation of that TSB is correct, but the part numbers are OLD. Those part numbers were for Ford's first attempt at a fix (which didn't turn out to work too well).
What you want is the latest and greatest cylinder head replacement. These "re-redesigned" heads were not released until early this year. Make sure you get the latest part numbers and not the ones in that TSB. If the dealer doesn't believe you, have them call the 1-800 SVT line and they will set your dealer straight. :thumbsup:
Check THIS thread out for more info.
One other thing... All Cobras can get the tick...not just the ones mentioned in that TSB (early build '03s). There was never a TSB to cover later models (that I'm aware of), but Ford acknowledged that fact and they will fix your car even if it doesn't fall into that build date range.
This Special Service Message was broadcast to dealers on/about June 10, 2004:
The latest version of the cylinder head was their response to the above ticking problem.