The noise could be heard after 1500 and become most obvious at 2000 rpm and it gets less obvious at 3000 and the noise fades afterward. And the noise could not be heard when the engine is not warmed up. However, later i figured that the dynamic of the noise. Every time i step on the gas between those rpms, the noise could be heard but when i release the gas pedal the noise is gone even when the engine was still revving between those noisy rpms. In other words, the noise only came up when i step on the gas pedal. And so i did a test. I rev the engine up to 2250 rpm, released the gas pedal, and give a sudden stepping on the gas pedal again after the rpm hit 2000. The noise was more audible with sudden changes in RPM only in the way that from low to high. Sounds like the noise was positively correlated to how much rpm increased in a short period of time. What could that be?? Which part of the engine has the highest possibility to create noises when rpm increases?
Without a general description of what the noice sounds like, squeal as compared to knocking, it is impossible to help you. Engines make a lot of different noises, so try and help by describing noise. I would suspect it is belt related, or tension pulley related as these are RPM variable noises, belts tend to slip when you accelerate and can be quite loud with a serpentine belt as example.
CERACOAT-NANOTECH.com
Testimonial: "I will post a link of a video tomorrow. And ofcourse i will film it tomorrow so you can see how exactly the noise sounds like. However it is not a squeal. and it is not as obvious as a knocking i guess."
I will post a link of a video tomorrow. And ofcourse i will film it tomorrow so you can see how exactly the noise sounds like. However it is not a squeal. and it is not as obvious as a knocking i guess.
×
312 views
Usually answered in minutes!
×