rx7devil210

Okay ive had my nitro rs4 3 evo + for about 4 months now. I did the break in process i ran it through 4-5 tanks in figure 8s and 2 in idle. It makes wierd rattling noise from the engine i dunno if its normal or something is wrong. Any input will be appreciated thanks.

sprkeyezz

Well i am also suffering from the same problem and want some useful information about this problem. Visited lots of cars for sale forum

juansilva

Did you fix the problem in the end? BTW I love the rs4 3 evo, remember watching a YouTube video vs the Evo RTR

Mercedes Service

rx7devil210

Yea I eventually found out that it was a normal rattling noise. Also my exhaust manifold was loose so I tightened it and put a new gasket in and it stopped.

Car-Tune

What does it sound like?

rx7devil210

Like metal scraping metal lol it sounds like the piston scraping the cylinder head

ou2mame

me and my friend both have evo's, and his makes that sound, but mine doesn't... his exhaust header actually came loose out of nowhere, so i tightened it down... maybe its an air leak from the gasket? i'll replace his and see if its still making the sound, i have one laying around anyways.

Car-Tune

If it sounds like little bells in your motor its the bearing went out and its bouncing inside your motor

rx7devil210

What bearing and how do I replace it?

Car-Tune

Inner bearing behind the shaft

rx7devil210

alright so its the bearing before the flywheel?

JohnP2

Just a thought, but have you checked your gear mesh?

Car-Tune

No. There's one more behind the that one. They are like one cm apart.

Car-Tune

Do you have aluminum clutch shoes? If you do have the little bell sound could be coming from your clutch shoes. A shoe could be lightly engaging, you could have a broken/lose/weak clutch shoe spring. Check out the clutch before you'll have to take your entire engine apart to see if sound could be coming from your engine.

Here's one way to check if its your engine. Remove the glow plug, try and spin your flywheel either direction till you can see the piston and try to see for any dings/dots/crator damages over the top of the piston.

rx7devil210

The piston has no craters or scrapes.

Car-Tune

Possibly your clutch shoes

juansilva

Nice one glad you fixed it in the end