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Discussion Starter · #1 ·
I have a ticking sound coming from the under side of the motor above the driverside tire. its not constant sometimes there is a 5 to 10 sec. gap and sometimes it wantdo it. the dealer said it was air in the fuel pump. has anybody had this noise? (by the way it is fully deleted with h&s programer and afe cold air intake)

455 Posts
here is a quick write up I was able to locate, I had talked to the dealership about it, they were telling me something about a TSB

Here is a quick internet article I just found on it

2011 F-250, F-350, F-450, F-550
ISSUE Dealers should not attempt to compare any
Some 6.7L diesel equipped vehicles may exhibit a customer vehicles exhibiting this noise with other
ticking noise at idle after an engine oil change. It is similar vehicles as the noise is different from vehicle
often referred to as Typewriter Noise because of its to vehicle and this may lead to the incorrect
similarity to the sound of random typing on a conclusion that the vehicle has a condition.
mechanical typewriter. Customers may report that Typewriter Noise is a normal operating
when near a building, wall or drive through window, characteristic of this diesel engine. This noise has
that this noise can be heard from inside the cab. no short or long term effects on the engine. Do not
attempt repairs to eliminate this noise. This noise is
ACTION characteristic of the 6.7L diesel engine and will
Follow the Service Information to inform the typically cease or diminish significantly within the oil
customer of the characteristic. change maintenance interval.
SERVICE INFORMATION Refer to vehicle Owner Guides and Maintenance
Guides for approved engine oil viscosities and
The relationship between the oil film, crankshaft usage information. Use of different oil viscosities will
journals, bearing inserts and engine cylinder block not eliminate this noise and is not recommended.
produces a sound that is heard as a ticking noise. Customers should be informed that these conditions
The overall noise reduction in engines produced do not affect engine durability and no repairs are
today makes this noise seem new when, in fact, it necessary.
was present in prior model year vehicles, but
masked by other noises in the past. Because the WARRANTY STATUS: Information Only - Not
6.7L diesel engine includes a number of design Warrantable
improvements to reduce diesel engine noise,
Typewriter Noise can be more noticeable than on
previous products. Typewriter Noise is not
detrimental to engine function or durability. Other
manufacturers of diesel engines have reported the
presence of this condition for a number of years.
Build tolerance stack-up from engine to engine
contributes to perceived differences in noise
intensity. When engine temperatures reach 150 °F
(65 °C) or higher, (from engine idle up to
approximately 1700 RPM’s), this noise can typically
be heard at the front wheel well and is often
isolated to the transmission bell housing or oil pan
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