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Location:
Melbourne
Registered:
May 2002
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Does a psst psst from the inlet side of the engine denote vacuum leak?
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Sat, 27 July 2002 14:21
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As my topic heading says. I have a psst psst, and when the engine water temp indicator rises to half, I get little chirps then a full on stove kettle whistle...
Any advice on which hoses to check and how to diagnose which hose it is would be much appreciated.
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Location:
Cairns
Registered:
May 2002
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Re: Does a psst psst from the inlet side of the engine denote vacuum leak?
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Sat, 27 July 2002 21:51
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I'm mostly old school so the only time i've heard that was when working on a Datto 1600. Top plate of carb was loose. Perhaps your throttle body mounts are loose or the gasket is not seating properly??
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Location:
Melbourne
Registered:
May 2002
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Re: Does a psst psst from the inlet side of the engine denote vacuum leak?
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Mon, 29 July 2002 10:20
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Thanks JimmyD,
I'll have a look at that when I get the car back from the mechanic, she broke down tonight, some sort of metallic scrapping/shaking noise that increased with revs... Alternator most likely.
My car has a carby 1.6l motor, so I will look at the carb plate. I think it may be a vacuum leak, is there any easy way to tell other than a good listen to each connection thru a tube?
Thanks
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Location:
Cairns
Registered:
May 2002
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Re: Does a psst psst from the inlet side of the engine denote vacuum leak?
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Tue, 30 July 2002 02:36
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Tube is probably the easiest and most accurate way. When checking top plate gasketcheck the section that runs between the throats is not missing a bit or has become displaced to the side, this is usually the part that caused that high pitched kettle noise.
Cheers
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Location:
Perth WA
Registered:
July 2002
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Re: Does a psst psst from the inlet side of the engine denote vacuum leak?
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Tue, 30 July 2002 06:49
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Is it more evident at idle ? Is it losing power ?,cos vacumm is at its highest when the throttle plate is closed and moves toward 0 as revs increase
id say if its a whistle sound it could be a water leak, so check for old rotting radiator/heater pipes etc
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Location:
Melbourne
Registered:
May 2002
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Re: Does a psst psst from the inlet side of the engine denote vacuum leak?
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Tue, 30 July 2002 09:26
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raskas,
You may be onto it! I noticed whilst sitting at a drive-thru a slight kettle whistle, and as I have stated, it occured as the temperature rose.
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Location:
Perth WA
Registered:
July 2002
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 Re: Does a psst psst from the inlet side of the engine denote vacuum leak?
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Tue, 30 July 2002 10:31
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yeah id say you definitely have a water leak, its probably not dripping though so my be hard to find. Best bet is to get it hot and wiggle things around until you either see it or the steam burns your hand
being on the inlet side it could be heater hose or possibly even the transfer pipe coming out of the back of the water pump
raskas
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Location:
Perth WA
Registered:
July 2002
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Re: Does a psst psst from the inlet side of the engine denote vacuum leak?
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Tue, 30 July 2002 10:38
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| inertia wrote on Mon, 29 July 2002 6:20 PM |
Thanks JimmyD,
I'll have a look at that when I get the car back from the mechanic, she broke down tonight, some sort of metallic scrapping/shaking noise that increased with revs... Alternator most likely.
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i just read this post ,that whistle noise and your scrapping may be one and the same......id put $10 on the water pump bearing collapsing and somehow causing a gap in the system
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Location:
Melbourne
Registered:
May 2002
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Re: Does a psst psst from the inlet side of the engine denote vacuum leak?
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Tue, 30 July 2002 12:36
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Hmmm,
pretty sure the scraping was from the alternator. Cause I could swear it smelled of electrics when i opened the bonnet after the noise was bloody loud...
Will update you guys, the mechanic says it is the alt. We shall see... In any event I am not paying for it... 
The water temp gauge takes a while to come up to temperature these days, I thought it was the new oil I am using, maybe it is the pump. Will evaluate when I get the car back.
Thanks for your help guys
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Location:
Melbourne
Registered:
May 2002
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Re: Does a psst psst from the inlet side of the engine denote vacuum leak?
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Wed, 31 July 2002 07:42
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Alternator was replaced and drive belts replaced also. No more scraping noises...
The psst psst is still there and if left to idle, the car's idle rate will change with the psst psst. It appears to be coming from around the fuel pump area around the back of the head...
I don't think I can be bothered finding it
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Location:
Wollongong
Registered:
July 2002
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Re: Does a psst psst from the inlet side of the engine denote vacuum leak?
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Wed, 31 July 2002 08:51
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If you want to find a vaccuum leak..get some WD40 or carbie cleaner or something in an aerosol can...start the motor....give it some revs and while doing that spray said stuff around where it sounds like its leaking. If you have a leak the motor will suck the stuff in and run really REALLY bad for a few of seconds until it clears itself. That'll tell you if you have a leak and where it is.....and no it isn't bad for internals.
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I supported Toymods
Location:
Berowra-Sydney
Registered:
July 2002
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Re: Does a psst psst from the inlet side of the engine denote vacuum leak?
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Wed, 31 July 2002 09:47
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if it was the waterpump not working properly then wouldn't the engine temp rise quicker then normal?
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Location:
Melbourne
Registered:
May 2002
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Re: Does a psst psst from the inlet side of the engine denote vacuum leak?
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Wed, 31 July 2002 15:17
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Ginsie,
You're probably right, and seeing as the noise is gone and the car is nice and quiet now, I'm happy, will try the WD40 trick...
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