Questions tagged [cylinder-leakdown]
4 questions
3
votes
1 answer
Effects of intake valves leaking
I just measured cylinder leakdown rates on my 2007 Tacoma V6. 5 out of the 6 cylinders had retention rates of 75-85% (leaking 15-25%) but my cylinder 4 (left engine bank in the middle) was leaking about 75%, retaining only 25%. The easiest of the…
amphibient
- 6,777
- 42
- 102
- 139
2
votes
0 answers
Likelihood of every piston ring corroding the same rate
I performed a rebuild of my both cylinder heads on a V6 engine, in order to grind leaky valves. I performed a test of each valve pouring isopropyl alcohol in the intake/exhaust chamber and waiting long periods of time to make sure none leaked, going…
amphibient
- 6,777
- 42
- 102
- 139
0
votes
0 answers
Piston leaked 1 cup of alcohol in 1 hr
I am analyzing a cylinder leakdown across all 6 cylinders of about 90% in each cylinder. After repeatedly confirming it wasn't the valves or the head gasket, I removed one of the heads and poured 1 cup of isopropyl alcohol in two cylinders, to test…
amphibient
- 6,777
- 42
- 102
- 139
0
votes
1 answer
Cylinder leakdown threshold
I did a cylinder leakdown test on my 6 cylinders and they range at 75-80% retention, meaning 20-25% leaking. What is an acceptable rate of cylinder leaking?
If the leak in a certain cylinder is higher than that threshold standard, is it more likely…
amphibient
- 6,777
- 42
- 102
- 139