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dirtynails
Dodge Dakota
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8/23/2008
08:21:17
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 Subject: vacuum testing procedure
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Message:
Still working on my 87 Dakota. I was wondering, is there a procedure for doing vacuum checks? I have a hand pump with a gage. I can't seem to find much in the service manual. Do I just pull a line, draw a vacuum and see if it holds?
Our problem is the engine doesn't seem to have any power. It runs fine in park but when we try to drive it, it doesn't accelerate.
Thanks for any help.
Mark
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dirtynails
Dodge Dakota
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8/24/2008
07:56:20
| RE: vacuum testing procedure
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Message:
Hey folks,
I think we have our engine power issue resolved. The timing was off is all.
I would still like to know if there is a procedure or sequence for doing vacuum checks. With an older vehicle, I just never know when something is going to start leaking.
Thanks
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?
Dodge Dakota
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8/27/2008
09:48:02
|  RE: vacuum testing procedure
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Message:
Pretty hard to come up with a test like you
describe . Usual way is listen for vacuum leaks
and or use a vacuum gauge .
Best to get a " base " reading when everything is Ok . Then , if you suspect a problem , put on the gauge to see if it is less , and start moving hoses to see if it varies , and or you hear the leak..
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dirtynails
Dodge Dakota
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8/27/2008
12:30:49
| RE: vacuum testing procedure
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Message:
?
Good advice regarding swapping hoses and getting a baseline when all is well. I will work on doing both.
Thanks
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me
Dodge Dakota
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8/27/2008
18:28:05
|  RE: vacuum testing procedure
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Message:
My friend had a garage and he use to spray gum out around the intake and hoses, to check for leaks.
Do it slow if the motor revs up or chokes down in that area, the leak is there..
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dirtynails
Dodge Dakota
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8/27/2008
18:36:23
| RE: vacuum testing procedure
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Message:
me,
Thanks for the tip. I appreciate all the help.
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pete
Dodge Dakota
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8/28/2008
11:54:58
|  RE: vacuum testing procedure
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Message:
A good ear and usually a sucking or whistling sounds can help steer you in your vacuum leak. I am to trying to locate a whistling sound Iam having not the one when colder temps are present and propane or smoke testing is one many ways to determine leaks but I don't have either on hand
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Flat Black
GenI
8/28/2008
18:25:55
| RE: vacuum testing procedure
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Message:
This is a old shade tree trick. Cheap easy way to check for a vacuum hose leak is with shaving cream. Will suck in the foam if there is a leak and you should be able to see that. Dont know if this would hurt any sensors in a new truck but the older ones like yours and mine should not hurt anything.
1987 and 1989 4x2 Keeping the past alive.
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pete
Dodge Dakota
JOIN HERE
8/29/2008
15:21:27
|  RE: vacuum testing procedure
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Message:
sounds easy wouldnt harm anything considering whats in our gas,did do it didnt find any leaks mostly put what I could access to.
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Flat Black
GenI
8/31/2008
23:50:36
| RE: vacuum testing procedure
IP: Logged
Message:
Well with all the different things you have done. changing out for new hoses might be the only thing left. Need to watch on some of the hose connections as they get brittle with age.
Hope you find it.
1987 and 1989 4x2 Keeping the past alive.
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