Why does my timing chain rattle when I start my truck?
As they don’t seem to stay fixed, as you have seen. Timing chain rattle on start up is a common issue across all manufacturers. Some are worse than others. The best advice I can give you with the present state of your truck is to make sure the oil is changed as soon as the oil gets dirty.
When to go to the Mechanic about a bad timing chain?
If the belt is jumping because it’s gotten loose, it can also flail around and damage other parts of the engine. If your engine won’t start or starts driving rough, indicating it may be on its way to failing, contact a certified mechanic for inspection and repairs. 4. Check Engine Light is on
Why does my car make a rattling noise when I idle?
Under normal conditions, the engine should have a consistent, smooth sound indicating everything is running as it should. However, when the timing chain is loose, it may cause a vibration inside the motor and that will produce a rattling noise as the engine idles.
Is the timing chain on an engine made of metal?
In order for your engine to fire, the timing chain must smoothly rotate around the gears without hesitation. Although the timing chain is made out of metal, it is subject to wear and tear and may break if not replaced as recommended by the manufacturer.
Is this timing chain problem?
Common Problems With Timing Chains Like all vehicle components, timing chains are subject to typical wear and tear. The metal “stretches” over time, which causes inaccurate timing of the crankshaft, and the camshaft will lag. Problems with the timing chain cause weak fuel economy and lower engine performance .
Can a timing chain make noise?
Under normal conditions, the engine should have a consistent, smooth sound that indicates everything is running as it should. However, when the timing chain is loose, it may cause a vibration inside the motor and will be indicated by a rattling noise as the engine idles.
What does a loose timing chain sound like?
Listen for a metallic sound that resembles a rattling or scrapping noise. The sound can be intermittent or constant, but it will be a metal to metal contact. Such a noise will reveal a loose timing chain hitting the inside of the timing chain cover every time it rotates.
Why does the timing chain rattle in Minis?
The chain tensioner is inherently weak and has had several revisions from BMW over the years. A weak tensioner can cause your MINI to develop the dreaded cold start (death) rattle. This is where the chain is not under the correct amount of tension and is free to rattle around against the plastic chain guides.
Why do I need to change the oil in my timing chain?
Timing chain pin and plate wear is accelerated by contaminates in the oil, that is the reason frequent oil changes are required. It is not that the old oil doesn’t lubricate, particulates that get trapped in the oil that work between the pin/plates will create accelerated wear.
What to do if your timing chain tensioner is not working?
Once you have taken off the bolt the timing chain tensioner will just be sitting there. All you have to do is pull the timing chain tensioner out and get the new one and if you want rub some oil on the new one to lubricate it – although this is not essential!
Why is my oil change chain making noise?
At this point I recommend running a can of sea foam in your oil with each oil change. The reason timing chains can be noisy on start up is either the pressure in the oil charged tensioner is bleeding off, or there is extra slop in the chain system that the tensioner isn’t design to take up.
What do you do when your timing chain rattles?
Don an automotive stethoscope and place the probe on the top or side of the timing chain cover. If you hear a rattle, metal to metal slapping or scraping coming from inside the cover, it indicates a timing chain noise.
How can I tell if my timing chain is bad?
Once the belts have been removed, start the engine. Place the probe of the stethoscope on the top or side of the timing chain cover. If you hear a rattling or scraping sound, with no other noise being emitted from the engine, it indicates a bad timing chain. Do not run the engine excessively long with the belts off.
Timing chain pin and plate wear is accelerated by contaminates in the oil, that is the reason frequent oil changes are required. It is not that the old oil doesn’t lubricate, particulates that get trapped in the oil that work between the pin/plates will create accelerated wear.
At this point I recommend running a can of sea foam in your oil with each oil change. The reason timing chains can be noisy on start up is either the pressure in the oil charged tensioner is bleeding off, or there is extra slop in the chain system that the tensioner isn’t design to take up.