#80257, "What's is that noise in my engine??? Please read"
Let me first start by saying the car drives fine at all speeds and idles normally...but if I put the car in Park or Nuetral (atx) and quickly rev it up to 3k rpms or more & release , there's alot of engine rattling noise as the as it revs down intil it get back down to about 2000 rpms. But if I rev it up and slowly bring the rpms back down then it sounds normal. I noticed it about a month ago but I just though it was the headers or some exaust pipes rattling but i checked it out yesterday and it's definitely in the engine. I'm thinking it's coming from the head but i'm not certain. It doesn't happen while driving because it's an atx so the rpms never drop fast.
Could it be insufficient oil supply, worns valves, or what?
I'd appreciate any opinions.
95' Avenger - Turbocharged Toy (SOLD) 99' Eclipse - Daily Driver (SOLD) 01' Audi A4 Quattro - Euro Cruiser (TRADED IN)
#80308, "RE: What's is that noise in my engine??? Please read" In response to Reply # 1
there's about 137k on the motor...it's sounds pretty loud to be the lifters, but then again, it's not like i know what really bad lifters sound like. whatever it is, it doesn't like when I rev the engine quickly. it sounds sound kind chaotic until it idles down
95' Avenger - Turbocharged Toy (SOLD) 99' Eclipse - Daily Driver (SOLD) 01' Audi A4 Quattro - Euro Cruiser (TRADED IN)
#80312, "RE: What's is that noise in my engine??? Please read" In response to Reply # 3
it definitely isn't a ticking sound. it's more of a fast rattle. If the timing wss off, would that cause the valves to tap? Although I had the timing belt replaced last year. i guess it could skip a tooth or 2
95' Avenger - Turbocharged Toy (SOLD) 99' Eclipse - Daily Driver (SOLD) 01' Audi A4 Quattro - Euro Cruiser (TRADED IN)
#80317, "RE: What's is that noise in my engine??? Please read" In response to Reply # 5
No, it runs fine...so I guess I can rule out the timing belt. What does a spun bearing sound like? I did a search but didn't find what I was looking for. Oh, and thanks for your help with this
95' Avenger - Turbocharged Toy (SOLD) 99' Eclipse - Daily Driver (SOLD) 01' Audi A4 Quattro - Euro Cruiser (TRADED IN)
#80318, "RE: What's is that noise in my engine??? Please read" In response to Reply # 6
Spun bearing would be noticible under other circumstances. Look at flexplate that Torque Converter bolted to and make sure that it isn't cracked. Had that happen and sound the same under similar condidtions. Could also be several other things. Start easy first. LOOK for loose shit.
#80357, "RE: What's is that noise in my engine??? Please read" In response to Reply # 9
ok, i checked it out today and it's not the exhaust/flex pipe section...i have obx headers, so there is no manifold bracket to rattle. and it's not intake back fire... but it's definitely in the engine. i guess the best way to descride it is it sounds like a bunch of bolts in a metal container being shakin VERY fast.
i think the best symtom is that it only makes the noise during quick revs.
95' Avenger - Turbocharged Toy (SOLD) 99' Eclipse - Daily Driver (SOLD) 01' Audi A4 Quattro - Euro Cruiser (TRADED IN)
#80387, "RE: What's is that noise in my engine??? Please read" In response to Reply # 10
Hmm could be a piston pin problem maybe too much clearance in it .. ive seen that before kinda sounds like an m16 goin off and usually only does it when lettin off the gas at a higher rpm..
#80853, "RE: What's is that noise in my engine??? Please read" In response to Reply # 13
Originally posted by Ducking_Fumbass My money would be on a spun bearing. Sorry, dude.
______________________________ If a sentence found online has 35% misspellings or greater and includes at least two racially charged expletives, chances are it is a YouTube comment.
'95 Eclipse TurboGS (garage deco) '95 TSi AWD (restoring a survivor) '97 Talon ESi-T (poor impulse control) '99 Eclipse RS-T (daily beater) '13 Evo X (mostly stock) '17 Sienna (Middle Aged Dad Mobile)
#80805, "RE: What's is that noise in my engine??? Please read" In response to Reply # 11
either way its bad .. id rip into it now before something goes shootin through the hood.. we can get you stock engine rebuilt kits for like under 200 bucks if you dont have the money to doa full race rebuild
Search
Printer-friendly copy
1 User in Chat
