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 Posted: Sun Jun 21, 2020 9:09 am |
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Joined: Jun 21, 2020
Posts: 1
Trade Rating: 0
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Hi,
I have 206 1.1i (HFZ) that's making an knocking noise from the engine? and I can't figure out what it is.
1) It only makes the noise at idle.
2) It only makes the noise when the engine is warm.
I took a video of the engine running:
https://youtu.be/xjIPoX2neXo
[video width=250 height=200]https://youtu.be/xjIPoX2neXo[/video]
Many thanks
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Posted: Sun Jun 21, 2020 10:21 am |
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Joined: Feb 07, 2010
Posts: 2949
Trade Rating: +6
Location: Athens, Greece
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Does it make any difference whatsoever when you depress the clutch?
Having said that it sounds like a valve overheating and knocking a bit.
Could easily be something else though and someone on here can help more.
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| 1.4i, 2001, 3-door, China Blue
Repair safely - Drive safely | |
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Posted: Sun Jun 21, 2020 12:30 pm |
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Joined: Nov 27, 2010
Posts: 11520
Trade Rating: +10
Location: What's it to you? ? ?
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When was the last time the valve clearances where checked / adjusted?
There manual adjustment on this TU1 engine & remember being a Peugeot number 1 cylinder is the gearbox end!
Advisable to get a replacement rocker cover gasket & not to over tighten the rocker cover as it's easy to warp which will result in oil leaks.
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| Toyota C-HR GR Sport 2.0 Hybrid with JBL & Alcantara packs. | |
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Posted: Mon Jun 22, 2020 8:36 pm |
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Joined: Jan 06, 2020
Posts: 176
Trade Rating: 0
Location: Cheshire
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To be honest it sounds a bit quick and deep to be a valve, it'd be lighter tapping sound and half engine speed if it was. One thing I've known to produce a "bottom end knock" sound though, is the harmonic balancer pulley.
If the valves are in spec (might as well check/adjust them since they've likely been neglected for years anyway) then I'd suggest removing the aux belt (power steering and alternator belt) and see if the noise changes/goes away. Also look very carefully at the condition of the harmonic balancer (the largest of the pulleys, attached to the crankshaft) and give it a wiggle, see if the rubber bonding between the inner and outer metal parts is suspect.
Could you also record another video with the engine doing this, but blip the throttle a couple of times?
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| '02 1.4HDi Mercury Grey 102k (waiting for it's time to shine once more)
'03 GTi 180 Aegean Blue 92k (suffering gearbox/diff issues)
'53 Obsidian Black XUD9TE/veg fuelled b-road toy (in surgery for MoT workarounds)
'56 SW 1.4i Verve Aegean Blue 70k (new £50 project with roasted lump)
+'95 Citroen Xantia 1.9D auto (on loan to inlaws)
+'99 306 2.0SE cabriolet
+'97 306 1.9LXDT
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