1985 245 DL Cold start after 6 years

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Old 11-25-2018, 05:39 PM
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Default 1985 245 DL Cold start after 6 years

Good afternoon fellow volvo peeps. My ide is still rough because I haven't had the time or money to do much. However, the car runs great for the most part. When I depress the brake pedal all the wqy while idling, the engine will die if I don't let up on the brake. If I don't depress it all the way to the floor it will keep running. As always all input and ideas are appreciated. I think I read something about this in a YouTube video about smoke testing for vacuum leaks. It also makes a high pitch squeal sometimes when the brake pedal is depressed. Again, thank you Volvonation.
 
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Old 11-25-2018, 09:20 PM
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It has to be vacuum related. The high pitch squeal is air escaping from the booster and it has to be a good size leak. Have someone else step on the brake while you listen/watch for a leak from that area. The smoke machine for leaks detection is expensive and not needed except for minor leaks that are hard to pinpoint...
 
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Old 11-25-2018, 09:29 PM
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Default Rough idle

Originally Posted by lev View Post
It has to be vacuum related. The high pitch squeal is air escaping from the booster and it has to be a good size leak. Have someone else step on the brake while you listen/watch for a leak from that area. The smoke machine for leaks detection is expensive and not needed except for minor leaks that are hard to pinpoint...
Lev, thanks for the input. I have my own DIY smoke machine that i made. Where is the best place to use it to check my exhaust?
 
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Old 11-26-2018, 05:05 PM
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You don't check the exhaust, you'd check the vacuum system by introducing the smoke in the intake manifold.
 
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Old 11-26-2018, 05:31 PM
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Originally Posted by lev View Post
You don't check the exhaust, you'd check the vacuum system by introducing the smoke in the intake manifold.
yes I understand that . But I still need to have someone applythe brakes while I'm under the hood. Right?
 
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