Why does my Ford Explorer make a rattle when I start the engine?
Why does my Ford Explorer make a rattle when I start the engine?
Some 2004 F-150 and 2005 F-150, Expedition, Navigator, F-Super Duty, and Mustang vehicles may have a rattle on startup that lasts 1 to 3 seconds. If initial pre-checks have been completed and the noise sounds like it is coming from the front of the engine, replace the VCT Phaser Kit.
What causes start up noise in Ford 4.6L 3V engine?
If isolated, only replace the intake and exhaust lifters on the affected cylinder bank. The 4.6L 3V and 5.4L 3V variable cam timing (VCT) feature may emit a light knock in normal operation and is audible only at idle speed, with a hot engine (gear selector in park/neutral).
What causes chain rattle on a Ford 4.6?
The first symptom of 4.6 timing chain problems is chain rattle on cold starts. This is because as the guides wear down they allow too much slack in the timing chain. In turn, the chain will making rattling sounds that are usually most noticeable on a cold engine. If not fixed in time the Ford 4.6 timing chain guides may completely fail.
Why does my car rattle when I start it up?
When the engine is started after sitting overnight, the oil pressure takes 3-5 seconds to come up to “normal”. (It comes up instantly, not slowly.) The engine “rattles” until the oil pressure comes up to normal.
Why does my Ford engine rattle when I start the car?
If initial pre-checks have been completed and the noise sounds like it is coming from the front engine, replace the VCT Phaser Kit. If the engine continues to make the rattle noise after initial startup, do not exchange the VCT.
If isolated, only replace the intake and exhaust lifters on the affected cylinder bank. The 4.6L 3V and 5.4L 3V variable cam timing (VCT) feature may emit a light knock in normal operation and is audible only at idle speed, with a hot engine (gear selector in park/neutral).
The first symptom of 4.6 timing chain problems is chain rattle on cold starts. This is because as the guides wear down they allow too much slack in the timing chain. In turn, the chain will making rattling sounds that are usually most noticeable on a cold engine. If not fixed in time the Ford 4.6 timing chain guides may completely fail.
What are the symptoms of Ford 4.6 V8 engine problems?
Symptoms of timing chain related problems on the 4.6 Ford V8 engine include: 1 Cold start rattle 2 Rough idle 3 P0300 code More
