Posssbile vacuum leak. Whats the best way of locating it? DIY. Thanks in advance.
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Suspected vaccum leak
- Thread starter BurgerMcDo
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Thank you for the reply Then after I have verified that there is a vaccum leak. I google some articles about it and it says that to use a carb cleaner, propane or a brake cleaner while the engine is on idle then spray it on and should fell a change in idle. I am thinking of using a brake cleaner.
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Originally Posted By: BurgerMcDo
Thank you for the reply Then after I have verified that there is a vaccum leak. I google some articles about it and it says that to use a carb cleaner, propane or a brake cleaner while the engine is on idle then spray it on and should fell a change in idle. I am thinking of using a brake cleaner.
Brake cleaner is some very potent stuff and many brake cleaners are corrosive to plastics as well as painted surfaces. Get a little overspray on a painted surface and you can kiss the paint goodbye.
Thank you for the reply Then after I have verified that there is a vaccum leak. I google some articles about it and it says that to use a carb cleaner, propane or a brake cleaner while the engine is on idle then spray it on and should fell a change in idle. I am thinking of using a brake cleaner.
Brake cleaner is some very potent stuff and many brake cleaners are corrosive to plastics as well as painted surfaces. Get a little overspray on a painted surface and you can kiss the paint goodbye.
A non combustible works, such as windex. overspray on the engine compartment is fine because you can wipe it all down andleaveit cleaner than you found it.
Originally Posted By: BurgerMcDo
Thank you for the reply Then after I have verified that there is a vaccum leak. I google some articles about it and it says that to use a carb cleaner, propane or a brake cleaner while the engine is on idle then spray it on and should fell a change in idle. I am thinking of using a brake cleaner.
I found a vacuum leak, caused by a warped intake manifold, by spraying propane from an unlit propane torch around the top of the engine. The idle speed would increase whenever propane was present but the increase in speed was small enough (25 rpm) that you could not hear it. However, the RPM function on my timing light displayed the increase.
Thank you for the reply Then after I have verified that there is a vaccum leak. I google some articles about it and it says that to use a carb cleaner, propane or a brake cleaner while the engine is on idle then spray it on and should fell a change in idle. I am thinking of using a brake cleaner.
I found a vacuum leak, caused by a warped intake manifold, by spraying propane from an unlit propane torch around the top of the engine. The idle speed would increase whenever propane was present but the increase in speed was small enough (25 rpm) that you could not hear it. However, the RPM function on my timing light displayed the increase.
Sprays and propane are useful. but can migrate to adjacent areas and be misleading.
Care is foremost, and don't spray like you are filling a bathtub.
A tedious visual inspection of all lines and their connections is always a good idea. Manifolding and piping is best with a short spray at selected areas.
Hank Hill uses the propane method!
Care is foremost, and don't spray like you are filling a bathtub.
A tedious visual inspection of all lines and their connections is always a good idea. Manifolding and piping is best with a short spray at selected areas.
Hank Hill uses the propane method!
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