Vacuum Leak Testing

[Athienou]

Hi
I have a 260E M103 Engine with a Vacuum Leak.
I purchased a smoke detector machine.
It works at a pressure of 19 psi. There's no dial to lower that pressure.
Just wondering if it was safe. Concerned it would damage something internally.
Thank you in advance.

 

[optimusprime]

If you have a vacuum leak, the smoke will just escape . You have the same W124 that i have. What problems are you having ?

 

[Bellow]

Hi
I have a 260E M103 Engine with a Vacuum Leak.
I purchased a smoke detector machine.
It works at a pressure of 19 psi. There's no dial to lower that pressure.
Just wondering if it was safe. Concerned it would damage something internally.
Thank you in advance.

I've never used one (I have a different test method) but 19psi does sound a bit on the high side to me. Maybe, you could fit a T-piece in the line and bleed off some of the pressure? (My test method doesn't involve pressure but still finds leaks. Big pressure is not essential IMO).

 

[optimusprime]

Just what to look for check vacuum leal with smoke machine M103 W124

 

[optimusprime]

check vacuum leal with smoke machine M103 W124

 

[optimusprime]

check vacuum leal with smoke machine M103 W124

 

[Athienou]

If you have a vacuum leak, the smoke will just escape . You have the same W124 that i have. What problems are you having ?

Low rough idle. I should say suspected Vacuum Leak.
Every component checked and tested.

 

[optimusprime]

Sorry my last 2 posts never worked, never had problem before uploading from youtube .

 

[optimusprime]

Did you change the OVP relay -- Make your own smoke machine .I use a jar with 3 holes in the lid - no 1 for a tyre valve no2 for nylon tube no 3 for old soldering iron. all 3 must be well sealed in to the lid so no smoke can escape . Then put material in to the bottom of the jar, next saturate the rag with baby oil ...screw the the top on tight , because its must be airtight Next put some air in the jar with a tyre pump .Soldering iron must be touching the rag for it to make smoke on a low heat . Remove brake servo booster line and push on the nylon hose thats coming from the jar . Switch on soldering iron so it smolders the duster or material in the jar. Look for leaks with a good flash light .

 

[WilliamParsons]

Did you change the OVP relay -- Make your own smoke machine .I use a jar with 3 holes in the lid - no 1 for a tyre valve no2 for nylon tube no 3 for old soldering iron. all 3 must be well sealed in to the lid so no smoke can escape . Then put material in to the bottom of the jar, next saturate the rag with baby oil ...screw the the top on tight , because its must be airtight Next put some air in the jar with a tyre pump .Soldering iron must be touching the rag for it to make smoke on a low heat . Remove brake servo booster line and push on the nylon hose thats coming from the jar . Switch on soldering iron so it smolders the duster or material in the jar. Look for leaks with a good flash light .

Creating a DIY smoke machine for detecting vacuum or air leaks can be a practical approach. The method you described, involving a jar, nylon tube, baby oil-soaked rag, and a soldering iron, is a common DIY smoke machine setup. It can be an effective way to find leaks in various systems, including the intake or vacuum systems in a vehicle. Just ensure that all components are securely sealed to prevent smoke from escaping, and exercise caution when using the soldering iron to avoid any fire hazards. Always prioritize safety when working with DIY tools and equipment.

 

[optimusprime]

I dont use one .Picked up one of these Hand Held Vacuum Pump Brake Bleeder Set Bleed tester Tool Kit 2 Jars Car Bike UK 788537801016 | eBay. But If it is your not DIY savi buy a large cigar . Dont burn you fingers when match burns down.