Shot of ether won't cure it? Cheaper than intake air heater. We finally wore out bushings on our starter cracking in cold weather, and rather than buy the $350 Yanmar replacement (went through two other aftermarket ones that cracked the Al housing), we got the starter re-bushed for $35 and a can of ether. A can a year does it for us and we use the boat pretty much once a week all year. Quick shot, half throttle and in three seconds it is running. It is a 30 y/o diesel.
