A14NET squeaking sound

402 Views 2 Replies 2 Participants Last post by pgitsov, 2 mo ago

pgitsov

Hi guys,

My vehicle is not a Shevy, hope this is not a problem, it is an Opel Insignia with A14NET 1.4 Turbo gasoline engine. Last year it started to produce a strange squeaking sound similar to that of a loose belt. I replaced the belt together with the tensioner and pulley but it didn't help. I also replaced the water pump and the alternator pulley, still no change. The sound can only be heard after engine gets hot and under 1000 RPM. The strangest thing is it continues a couple of seconds after I shut down the engine, see here VID_20230331_160346376.mp4.

When I pull out the dipstick the noise goes away, pushing it in brings the sound back, see here VID_20230331_173030754.mp4.

Any ideas and advices are welcome.

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Blasirl

· #2 · 2 mo ago

pgitsov said:
Hi guys,

My vehicle is not a Shevy, hope this is not a problem, it is an Opel Insignia with A14NET 1.4 Turbo gasoline engine. Last year it started to produce a strange squeaking sound similar to that of a loose belt. I replaced the belt together with the tensioner and pulley but it didn't help. I also replaced the water pump and the alternator pulley, still no change. The sound can only be heard after engine gets hot and under 1000 RPM. The strangest thing is it continues a couple of seconds after I shut down the engine, see here VID_20230331_160346376.mp4.

When I pull out the dipstick the noise goes away, pushing it in brings the sound back, see here VID_20230331_173030754.mp4.

Any ideas and advices are welcome.

It looks similar to mine so I will post links for two possibilities. The first is for a bad PCV valve. Pull the cosmetic cover off of the engine and look for the round disk looking thing that has a small rectangular opening and put your finger over it. If there is air being blown out, you have a bad PCV valve in the intake manifold that has also caused the round disk, the vacuum regulator, to blow. You will be best off buying a fix kit and replacing the valve/camshaft cover along with a numbe of other possibilities, such as a bad front seal which could be your squeak.

Better PCV fix links 22FEB2022

The second best possibility for just the squeak is the spark plugs

Best Plugs and Coil 19JAN21

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pgitsov

Discussion Starter · #3 · 2 mo ago

Thanks for your feedback! You probably mean a fix kit like this one V3.4+ GM 1.4L Turbo PCV Fix/Upgrade Kit. I checked the rectangular opening, no air is blown or sucked either at cold and hot engine, both idle and at 1500-2000 RPM. I will likely replace the plugs, if this doesn't help I will take the kit option. Just want to be sure it will solve the problem before ordering it.
You mentioned a bad front seal, wouldn't this cause also oil leak that should be visible on the engine? There is none at the moment and I haven't noticed oil waste with time.

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