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General Category => General Discussion => Topic started by: VT-Guzzi on February 04, 2026, 10:29:09 AM
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I am investigating a ticking sound on start up. Since my engine is out for a clutch I thought I would investigate inside the timing cover. The oil pump gear moves in and out over .030". Seems excessive. Is there a lash spec for that? What are your thoughts on weather or not this is a concern?
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What model are we talking about?
Regardless, the oil pump gear should not move in and out that much. Edit: 8V engine with a much different pump than I'm familiar with, may be normal.
(https://i.ibb.co/67NzY2Lj/complete-oil-pumps-g-big8746505-01-2d6e.jpg) (https://ibb.co/67NzY2Lj)
(https://i.ibb.co/7dj6kt0W/complete-oil-pumps-g-big8746505-02-a7cb.jpg) (https://ibb.co/7dj6kt0W)
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'13 Stelvio NTX.
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Looks like an artificial heart…
❤️
Anyway, the more correct term is end float.
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From a well-respected Guzzi guru:
The movement in the pump shaft is normal, the rotors are driven by pins and when the drive gear isn’t pulling the shaft outwards it floats as the pins move in the rotor.
Ticking noise is most likely the cam chain tensioner plungers not pumping up due to insufficient oil because the upper sump spacer gasket has blown out around the main delivery gallery at the front. It should be replaced with either one of the thicker, usually green, sump/spacer gaskets from the 1100 motor or the sump gasket from a Cali 1400. Either will work. He should NOT simply replace it with one of the shitty originals which are thin, barely compressible and very frangible or it will likely blow out again!
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From a well-respected Guzzi guru:
The movement in the pump shaft is normal, the rotors are driven by pins and when the drive gear isn’t pulling the shaft outwards it floats as the pins move in the rotor.
Ticking noise is most likely the cam chain tensioner plungers not pumping up due to insufficient oil because the upper sump spacer gasket has blown out around the main delivery gallery at the front. It should be replaced with either one of the thicker, usually green, sump/spacer gaskets from the 1100 motor or the sump gasket from a Cali 1400. Either will work. He should NOT simply replace it with one of the shitty originals which are thin, barely compressible and very frangible or it will likely blow out again!
Ahhh…
I can just hear that working class ex pat British accent..
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Thanks everyone. IT's all what I expected. I have done the spacer gasket... probably 50K miles ago.
I am going to ignore the rest of it.
https://www.youtube.com/@2Upon2Wheels
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Thanks everyone. IT's all what I expected. I have done the spacer gasket... probably 50K miles ago.
I am going to ignore the rest of it.
https://www.youtube.com/@2Upon2Wheels
More: And for the record most of them tick briefly at start up, especially when left overnight or longer as the oil drains out of the plungers and their reservoirs and it takes a few revolutions for them to pump up. Any more than a second or so though and it’s usually a sign of the gasket having blown out. If not addressed it will run its big ends.