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So I was driving my 1970 Opel GT the other day and suddenly a piercing high pitched squeal came out from under the hood. It sounded like slipping belts to me so I replaced my belts and tightened up and lubed them. Unfortunately it still squealed. The sound seems to be coming from the passenger side of the engine near the thermostat, but below the carb. I removed my carb and heat shield and replaced the old gaskets and turned her back on... guess what it still squealed.
Enough backstory, here are the dynamics on the squeal:
1. It seems to not be effected by rpm.
2. When the throttle is depressed the sound gets less intense and at about half throttle it seems to disappear regardless of RPM
3. It seems to be effected by temperature, when the engine has been off for over 24hrs the squeal will not be heard upon start-up or the first about 10 minutes of driving.
4. The pitch of the squeal doesn't seem to change very much to any stimuli it just stays the same or gets quieter...
So does anybody have any idea what's happening to Mira, (my Opel) I personally think it is an intake leak at gasket to the engine.
Enough backstory, here are the dynamics on the squeal:
1. It seems to not be effected by rpm.
2. When the throttle is depressed the sound gets less intense and at about half throttle it seems to disappear regardless of RPM
3. It seems to be effected by temperature, when the engine has been off for over 24hrs the squeal will not be heard upon start-up or the first about 10 minutes of driving.
4. The pitch of the squeal doesn't seem to change very much to any stimuli it just stays the same or gets quieter...
So does anybody have any idea what's happening to Mira, (my Opel) I personally think it is an intake leak at gasket to the engine.