#1
IP: 24.121.135.15
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A Little Smoke
We have a rebuilt 1975 A4 that runs great. Starts every time, new gas tank filters, recent oil change. Installed a Moyer thermostat,(raw water cooled) been running with a bypass valve only, and installed electronic ignition today. The sea trial went well, temps came up to about 160° ( never more than 110° before) and temp held at different power levels.
Problem: I went to WOT to check temps which is well above hull speed and started getting a little blue smoke from the exhaust. No smoke or smell at normal operating throttle. Any ideas where the extra oil in the cylinders may be coming from at WOT? Thanks. |
#2
IP: 137.200.32.38
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Rings and/or valve seats. If it isn't a lot I wouldn't worry about it other than to check the oil and make sure it doesn't get low.
You can always do a MMO treatment to free up sticky rings too. |
#3
IP: 198.134.98.50
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Smoke under high load can be:
__________________
Whiskeyjack a '68 Columbia 36 rebuilt A-4 with 2:1 "Since when is napping doing nothing?" Last edited by lat 64; 03-20-2019 at 07:16 PM. |
The Following User Says Thank You to lat 64 For This Useful Post: | ||
Administrator (03-20-2019) |
#4
IP: 24.152.132.140
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Are you using any fuel additives?
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Neil 1977 Catalina 30 San Pedro, California prior boats 1987 Westsail 32, 1970 Catalina 22 Had my hands in a few others |
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