Engine Sounding Like A Diesel When Accelerating
#1
Engine Sounding Like A Diesel When Accelerating
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.
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.
#3
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.
When you use the lucas oil stabilizer you are supposed to use the whole 1L bottle to replace a litre of oil.
#5
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.
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.
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.
Thanks guys, I hope we can figure this out.
#6
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.
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.
#8
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?
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?
#10
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.
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.
#11
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.
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.
#12
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
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
#13
Originally posted by bdotdan
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
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
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.
#14
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
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
#15
Originally posted by 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.
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.
When it warms up and expands, the crack gets smaller, then less noise.
#17
Originally posted by 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.
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.
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
#18
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
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
#19
^^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.
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.