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The occasional bottom end hollow clunk.
by
srgtlord
on 28 Nov, 2012 12:21
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So I never really thought about this until now but, just figured it was just one of those vw noises , but what would cause an occasional bottom end knock on a NA 1.6 that would last anywhere from 15 seconds to 1 minute? Just wondering if there is something else I should look at with the engine out.
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#1
by
ORCoaster
on 28 Nov, 2012 12:52
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OIL Pump?
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#2
by
RabbitJockey
on 28 Nov, 2012 12:56
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When do u hear it? And what makes u think its bottom end? Is it just after a cold start?
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#3
by
srgtlord
on 28 Nov, 2012 18:32
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It used to be only after a cold start . It sounded like someone was hitting the oil pan with a hammer.
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#4
by
theman53
on 28 Nov, 2012 18:44
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Tell that someone to knock it off...Or take the hammer away.
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#5
by
ORCoaster
on 28 Nov, 2012 19:46
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Make me chuckle,.. Something then, he meant something not someone. Or is it the comparative method of association in which he speaks.
Trolls perhaps? Don't they live under things?
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#6
by
RabbitJockey
on 28 Nov, 2012 20:10
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It's probably just normal diesel clatter or ur timing is too advanced when a friend of mine first got his diesel rabbit together he thought the pistons were slamming into the head or something, this was in the summer, I told him loosen the pump and rotate it away from head a bit and all was well
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#7
by
srgtlord
on 29 Nov, 2012 04:23
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Damn gremlins
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#8
by
RabbitJockey
on 29 Nov, 2012 04:28
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Damn gremlins
I named all mine Ronnie, Bobby, Ricky, and Mike.
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#9
by
theman53
on 29 Nov, 2012 04:37
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I would think it would be fuel related. Maybe injector related. Even my TDI will make some bad noise whenever it is cold and cold starting. I think what trev said is accurate as well.
If there is a hammer down there you should take it away, the pans dent eventually.
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#10
by
srgtlord
on 29 Nov, 2012 05:11
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But the strange thing is the issue would come back after fully warmed up at idle after it reached operating temps.
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#11
by
TylerDurden
on 29 Nov, 2012 05:52
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How old are the IM shaft bearings?
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#12
by
srgtlord
on 29 Nov, 2012 06:06
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Lets put it this way, I plan on replacing them. Im just not sure if this will solve this odd issue.
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#13
by
ORCoaster
on 29 Nov, 2012 11:18
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Damn gremlins
? Isn't this the season to be hanging and ringing bells?
Put a bell on it. Then you won't hear the hammer like noise
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#14
by
pointynoggin
on 29 Nov, 2012 20:03
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I got a cherokee that did something like that, 5sec of hammering on start up. Turned out to be the harmonic balancer.