[boyt911sc]

After all this time, a lot of people are still insisting using the propane gas, carb cleaner, starting build, etc. trying to locate these illusive sources of vacuum leaks in CIS in their troubleshooting. In most cases, you won't be lucky finding the leaks. An air compressor, a shop vac, house vac , or even an air mattress pump could do similar task. The trick as you have demonstrated is to create a positive air pressure inside the system (engine) and spray soapy water at suspected areas.

Like what you had experienced, not being able to locate any air leak does not mean you did not have any. So testing and verifying the absence of these air leaks could easily be done by any DIY'er like you or me with better accuracy.

After the vacuum leaks have been corrected, correcting/adjusting the air mixture is necessary. Not before. I thought I failed to convince you using this method because it has been a while since we last communicated. Keep us posted.

Tony