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Chemsto
New User
Nov 6, 2012, 6:41 AM
Post #1 of 4
(2273 views)
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B14 Sunny knocking sound
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1999
Nissan
Sunny B14
1.5
120000KMS
I drove though what appeared to be a puddle,ended up being a small lake.Now i hear a knocking sound coming from the engine,car sounds like a tractor! Plus there were rocks in the mini-lake and they had contact with the underside of the car. The oil seems to be ok,correct level,no water but the sound from the exhaust has changed.Please help!
Caroline
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Nov 6, 2012, 6:47 AM
Post #2 of 4
(2268 views)
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Re: B14 Sunny knocking sound
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Engine still runs which is good so far. Now it needs to be totally hoisted to inspect for damage my guess is more from "rocks" than the water so far. Exhaust pipe(s) could be bent, broken or more. Will need to be seen in person to really know,
T
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Chemsto
New User
Nov 6, 2012, 6:58 AM
Post #3 of 4
(2261 views)
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Re: B14 Sunny knocking sound
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Another problem,before the water incident,there was a strange and very loud vibrating noise from the exhaust pipe,i think. This would happen any time am idling in traffic and occasionally the idling would change on its own,revving between 500rpm and 1000 rpm. Please help,this was my first car and I have had it for close to 8 years and in my part of the universe mechanics are not known for their honesty especially when dealing with female drivers. Thanks!
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Nov 6, 2012, 7:29 AM
Post #4 of 4
(2235 views)
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Re: B14 Sunny knocking sound
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Sorry if you have had difficulties from mechanics in your area. Gender should have nothing to do with any of this. Plenty and increasingly females are taking up auto repair as a trade at least around me!
The idling changing BEFORE this should have been taken care of. Likely issue is vacuum leaks, air intake controls. The vibrations noted could be mounts for the engine/transmission or exhaust parts touching body metal parts which they shouldn't.
I have to guess as they don't sell this car where I am but usual layout would be such that exhaust parts run down and under car and must flex some there normally but still not touch anything. Where it flexes is a trouble spot over time without any adverse situation and may have broken there.
This shouldn't be all that hard to determine with some basic checks and seeing it. If you have sustained damage from whatever in the puddle it will not be known as any exact fix from any known ordinary wear and tear so must be seen.
The exhaust parts would have also been hot and sudden shock of water alone could have caused damage.
If you really feel you have trouble with your area shops then ask around for where people go who are happy with assorted service for their vehicles.
Keep trying. This could be what I'm thinking as exhaust issues and items getting hot that shouldn't and might even be dangerous to continue using this car until it's found and fixed. If bad enough and you are insured for damage it may be a claim with insurance. Can't know from here,
T
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