My truck will not idle and i have been told i probably have a vacuum leak how do i go about finding this leak and is it dangerous to spray carborater cleaner on the hoses? thanks for your help
2007-09-10 01:55:11 · 6 answers · asked by wildcat 1 in Cars & Transportation ➔ Maintenance & Repairs
No, it isn't.
Use the stuff to spray potential leaking areas. Any appreciable vacuum will draw this combustible gas into the combustion chamber, increasing engine speed noticeably.
Be observant and methodical and you'll see where its sucking. Of course, use prudent safety precautions and avoid working on hot engines.
2007-09-10 02:00:53 · answer #1 · answered by omnisource 6 · 0⤊ 1⤋
The enrichment approach works if the engine is carbureted or makes use of a Mass air pass sensor yet no longer if it makes use of a MAnifold stress sensor, which immediately compensates the blend for leaks. Propane isn't risky - it incredibly is easily controllable and has a slender variety of flammability - yet drinks have an important threat of fireplace. A greater complete, regardless of the reality that stupid finding, way of checking for vacuum leaks is to place the intake duct on your face (the different end on the throttle physique) and open the throttle mutually as blowing in the intake so the manifold is pressurized. for sure the engine is off mutually as you are trying this, and the PCV is disconnected and blocked off.The intake could as a rule carry stress; if it leaks you will hear the hiss and a helper can hunt it down by sound and along with his hands.
2016-12-31 18:23:18 · answer #2 · answered by Anonymous · 0⤊ 0⤋
NAPA has a rather inexpensive diagnostic vacuum leak detector that has a probe on a handle connected to a battery powered meter that is able to detect very fine vacuum leaks around the intake manifold, throttle body and or carburetor.
This piece of equipment has baled me out of vacuum leak problems in an industrial setting where we had four vacuum pumps working simultaneously to remove vacuum from a chamber down to the 10 - 5 Torr range.
2007-09-10 02:17:42 · answer #3 · answered by Country Boy 7 · 0⤊ 0⤋
I would not use carb cleaner or starter fluid - without knowing what's going on you could start a fire or make things worse. If you are unable to find it by visual or auditory observation, the correct way to find a vacuum leak is to put smoke in the system and look for where it comes out. Is it supposed to come out there? You will need to find a vacuum line on your air intake that you can seal with the smoke machine (really the best thing to use, although I'm sure you don't have one around).
Good luck!
2007-09-10 02:05:13 · answer #4 · answered by Allison R 3 · 0⤊ 0⤋
You can start a fire if you are not careful. There are diagnostic charts made to help you track these things down. Buy a Chilton or Haynes manual.
2007-09-10 01:59:39 · answer #5 · answered by Jody D 6 · 0⤊ 0⤋
I usually spray starting fluid on them.
2007-09-10 02:01:02 · answer #6 · answered by Anonymous · 0⤊ 0⤋