2009 F150 Mechanic

Vic · Jan 13, 2014

My truck has developed a small tic in the front right bank of a 4.6 L V8. It only does it for about 30 seconds then goes away. Engine still makes good power but is off about 1 mpg. It might be a small exhaust leak that goes away as the engine warms but not sure. Might be a damaged Ox sensor too. That would account for the 1 MPG loss.

Any good truck mechanics in the White Marsh area? I would investigate myself but don't have the time.

Vic

Ski169 · Jan 13, 2014

Sounds like the same problem I have. '07 FX4 with the 5.4 V8. No doubt it's the exhaust manifold.

Numidian · Jan 13, 2014

I've never owned a Ford that didn't tick LOL. On my 98 F150 it was a cracked manifold. On my BroncoII's it was always lifter noise.

G O B · Jan 13, 2014

Tic's on shut down are not a problem. Tics from lifters during warm up may be varnish sticking a lifter. Try a quart of Marvel Mystery Oil in a fresh oil change, if it is a sticky lifter, the problem will go away in 200 miles or so.

Mike3888 · Jan 13, 2014

Typical for these motors. Google Ford cam phasers.

U.S.SFC_RET · Jan 13, 2014

If the engine is an overhead cam then there are no lifters. Most likely it is an exhaust manifold leak. Very common. I still have an exhaust leak on a 2000 tundra that I bought new. It started ticking at startup ~35,000 miles or so. Its worth checking into.

PapiBarcelona · Jan 13, 2014

I don't believe the Modular V8 engines have "lifters." Overhead cam, and Ford uses the term "Cam follower" in their nomenclature. I don't think the 4.6L had cam phasers either, but I'm not totally sure. I thought that was a 3V 5.4L thing.

Tick sound searches on message boards for these engines will always net results to be either Injectors, loose Spark Plugs, Exhaust manifold leak, or something involved with the timing chain.

Jason21237 · Jan 13, 2014

Almost always the tick on the 4.6 and 5.4 is an exhaust manifold bolt that popped its head. The rest of the bolt remains stuck in the head. Its a shitty job. We are an exhaust shop and wont touch them. You can guarantee more bolts will break trying to get the manifold off. They are known for doing it and its a shit design. IF you find someone willing to do the manifold it wont be a cheap job. Its a very miserable way to spend your day.

tkelley · Jan 13, 2014

I do the manifolds all the time on 4.6 and 5.4. , If you have a stick welder you can do a quick weld on the broken bolt (with manifold off) It will not damage the head , keep the heat down. This will give you some extra to work with vise grips and the heat will help expand. Use deep creep to cool, it will chase down the threads. This job takes time.

Numidian · Jan 13, 2014

Jason21237 said:
Almost always the tick on the 4.6 and 5.4 is an exhaust manifold bolt that popped its head. The rest of the bolt remains stuck in the head. Its a shitty job. We are an exhaust shop and wont touch them. You can guarantee more bolts will break trying to get the manifold off. They are known for doing it and its a shit design. IF you find someone willing to do the manifold it wont be a cheap job. Its a very miserable way to spend your day.

Sounds like a good spot to replace the bolts with studs.

Oldcarjunkie · Jan 13, 2014

tkelley said:
I do the manifolds all the time on 4.6 and 5.4. , If you have a stick welder you can do a quick weld on the broken bolt (with manifold off) It will not damage the head , keep the heat down. This will give you some extra to work with vise grips and the heat will help expand. Use deep creep to cool, it will chase down the threads. This job takes time.

I know someone who needs one done. Pm me how much. And location. Thanks

Vic · Jan 16, 2014

It only ticks for around 15 seconds, once warm it goes away. One article said Cam Phaser noise comes in when engine is warm, not cold. Mine only does it upon starting a cold engine.

To me that is probably more of an exhaust leak from what I am reading. Still annoying.

Vic

2009 F150 Mechanic

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