2001 Toyota Tundra Knocking While Cold Start

Thermocure Coolant System Rust Remover Safely Removes the Rust from Cars Cooling System 32 oz Bottle. If I rev it strongly the noise does not occur. In todays case study we have a 2015 Toyota Tundra pick up truck with a 57l V8 engine.

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2001 toyota tundra knocking while cold start. Look in sig. As I increased rpms the noise became more pronounced on the drivers rear end. It sort of stumbles and coughs and you think it is about to fire up but doesnt.

ProComp 7 35125018 -11. It usually has to be below 40 F for the noise to happen. Bought this Lexus about a year ago.

As it has gotten colder here over the last month Ive noticed a ticking more like a knocking but not quite noise when the engine is cold. Ive got 105k miles on the truck and the timing belt was replaced just last spring. I have a 2001 RAV4 20L manual transmission with 62000 km.

Some days when it is colder upon starting I sometimes here a squealing noise that sounds like it is coming from the serpentine belt. The engine cranks but will not fire. It would usually continue until the engine had gotten to normal operating temperture.

I elevated the truck and put the truck in drive. They do have hyper tuetectic pistons which are designed to expand to better fit the bore at a certain temp. There is a known rattle on cold starts that is a very e.

I just wouldnt worry about it. Also the noise is sporadic and will only happen randomly. Ticking Clicking Noise from Passenger Front at Idle.