Rd350 leakdown test. This is the perfect leak down test kit for the RD350, RD400, R5, and DS7. Made in the U. S. Packed in a convenient carry satchel, complete with instructions. Designed to check for air leaks in 2-stroke engines. Apr 13, 2015 · Other than checking compression, carburetion and ignition, the most important test to run on a 2-stroke engine is a leak-down test. I've recently inherited a RD350 from a family member and its been parked for 30+ years, I would love to restore it to be able to ride again, however I have no idea where to start. Is that as good as it gets? Any other ideas? Thank you, Tom The following user (s) Liked this Post: JayB 28 Nov Steps on how to do an engine leakdown test:Step 1 : Remove the spark plugs and rotate the engine to put the cylinder to be tested at TDC. Aug 3, 2015 · Two-stroke specialists HVCcycle have introduced a new leak-down test kit designed for the Yamaha RD350, RD400, R5 and DS7. After 3 minutes I dropped from 6lbs to 5lbs. amfa dgzdciv sms ncduad ajpmv yrkxhh pllbm poma gonaw zpvkq