imported_96hatch

This is the issue. I started to notice it about 4 days ago and I don't know what is causing it. My engine is sounding like it's a diesel when I accelerate.

I did an oil flush and change last night, but that didn't help it (it may have made it a bit worse actually). I also added some Lucas Oil Stabilizer (about 1/4 of a 1L bottle) but that hasn't seemed to help. If I accelerate very slowly, the sound doesn't occur, but other than that it does. I'm afraid of what this could be... any thoughts? Thanks.

imported_rbjeepthing

is it coming from the bottom end or top end? If it's the bottom end then sounds like main bearings. Top end it could be rockers.

zeeman

iTrader: (1)

when you changed the oil was there lots of metal shavings or big flakes of metal in the oil? If so i would suspect a spun (most likely rod) bearing.
When you use the lucas oil stabilizer you are supposed to use the whole 1L bottle to replace a litre of oil.

imported_mugenpowered

What do you mean by sounding like a diesel? Its hard to offer advice based on that, but if it sounds loud and rough maybe its something as simple as needing a new exhaust.

imported_96hatch

I'm not really sure which part it is coming from. It only happens when I am accelerating in gear, so I can't listen to it while parked in neutral to get a specific area. I am sure it's coming from the engine though.

No shavings or flakes in the oil. Will only adding 1/4 of a bottle of Lucas have a negative impact? (Next time I'll put in a whole bottle)

That is the best way I can think of describing this sound. Either that, or the sound made when you roll your tongue like a drumroll. I don't think it is coming from the exhaust, because that is usually a low-frequency rumble, isn't it?

Thanks guys, I hope we can figure this out.

sohcnotec

The sound you're describing sounds just like when my D16Y8 died on me.
It was knocking when I came of the highway and sounded almost diesel-like.

But you say it doesn't do the noise in neutral/park or when there is no eng load.

Could be possible over advanced ignition timing?? But I don't thnik you were playing with timing. Or were you??

Or even an exhuast heat shield that's come loose.

The exhaust pipe on my car actually rattles against the parking brake cables at 2700-3300 rpm when accelerating. Won't do it at idle however.

imported_kIeRaN

perhaps u have qan exhaust leak?

imported_96hatch

As for the heat shield, mine was rattling before, but I used a zip tie to hold it back together b/c a bolt fell out. So, I'm familiar with what that sounds like, and this wouldn't be the case. I can't see this sound being an exhaust problem either, it's definitely the engine.

It is looking like it could be something with the timing belt because the car has 144,000 kms on it and the belt hasn't been changed yet. Could this be what is causing the problem?

bdotdan

dude, people can't diagnose this problem over the internet, go to a shop and get it checked out

zeeman

iTrader: (1)

man i'd drop the oil pan and check it out. From the sympoms you describe it sounds a lot like a spun bearing. Did it start off a little quiter but get louder the more you drive it?
Do you have an adjustable cam gear that you messed with? It could be the sound of your pistons slapping the valves.
Either way, it sounds bad and seems to me like you should just take it to an experienced mechanic.

sohcnotec

It doesn't make the noise at idle unfortunately, so this quick test may not help in finding your prob:
IF it is a spun rod bearing (like mine was),at idle with revs up, I pulled out the spark plug wires 1 at a time. Finally got to #4, pulled it out and the noise went away. Without the load on the rod bearing, no noise.

I managed to only drive the car for a few more days and then it just wouldn't move after that.
Dropped the oil pan and sure enough, it was a spun rod bearing in #4.

bdotdan

well, ill take a stab at it, lol

your symptoms sounds like whats happening with my car. its just that i don't know what a diesel engine sounds like, so i don't know if its the same

anyway, with my car its the input shaft bearing in the tranny, when i accelerate slowly, it doesn't make any noise, but if i accerate quickly, then there is a weird *** noise. thing is, if this is the same problem as yours, you should be able to hear a bit of a rattling.

try this, it only takes a sec.
go to your car and start it up
turn off stereo and just listen to the engine for a couple of seconds, then press the clutch and listen to see if a noise dissapears, if yes, its the input shaft bearing

if you hear a noise when you press the clutch that you didn't hear before, its the throw out bearing

imported_96hatch

The sound doesn't occur when parked though...

I've also noticed that after about 10 minutes of driving, the sound gets quieter when I accelerate. I'll probably have to take it in on Tuesday.

89SIHATCH?

dude your tranny is probably chewed, done , gonzo.

my last hatch did this kinda then just died and siezed right up after blowing a hole in the side.
my seals where axles are inserted to the tranny were leaking for some time then got bad but i didn't know what was going on. when ever i was pounding on it or excelerating it would sound somewhat like a diesel it self, ( which is why you only hear it in gear) then got tight one day i tried to drive it and bang i had a hole in the side of my tranny and a free puddle of tranny fluid my land lord got.

check around where your axles insert to the tranny and see if theres any leaking there and check your tranny fluid you might be low by the sounds of it.

good luck solving this problem

sohcnotec

Maybe a crack in exhaust manifold.
When it warms up and expands, the crack gets smaller, then less noise.

czeto

Happened to my friend's RSX-s. Ended up being air injecton pump (emissions). Don't know if your car is equipped tho

Just take it in dude....

bdotdan

well did you at least try it?
cause if its the input shaft bearing, i won't sound the same when not moving.

in the beginning its very faint, like usually you can barely hear it, unless you do nothing and let the problem get worse

imported_gatherer

Dude... Check your compression

and get off the lucas fix that your on. highly not recommended... they designed that stuff with Iron and steel blocks in mind. how does that effect your alumium engine? simple Alumium is a softer metal when the molecules of the lucas stuff create their molecular lattice it's tougher then the alumuim and wears it down at the microscopic layer... you won't see the shavings in the oil because you have a filter cut the filter open and have a look. then do a compression test. and call me in the morning

sohcnotec

^^Not trying to argue or anything.
But there is a steel sleeve in the block.
And like just about every other engine out there, it has an aluminum piston in that steel sleeve.
So I'm missing your point about what the block material has to do with the Lucas.

imported_gatherer

well the point is alumium is softer then steel and get affected negatively by Lucas.. I ain't a scientist this just info I have read by scientists....