strate6 wrote: The main reasons most 1300/6 overheat is due to a water pump issue. This is assumng you have burped your coolant system and are happy its 100%.
This can be one of many things including the Nylon Gear being damaged, or the Impellor not attached to its shaft at the end due to is being corroded.
If you are confident the coolant is all good and the system has no air in it, then the only other thing to do is to drain the system and take the M8 Drain Bolt out of the front lower Impeller Cover which can be seen and accessed from the front of the engine.
From the correct angle, and maybe using a mirror and torch, you can see UP inside the Impeller Cover / Chamber where a small part of the Impeller itself is visible.
Get someone to turn the engine over on the starter and see if the Impeller is spinning 100% as it should be...............
Hope that helps ?
Pete F
UK
Thanks for the reply, Pete. I have very good flow through the radiator as seen with the cap off. The water pump has been rebuilt, thermostat tested, new one procured and tested, installed, no difference. Bypass is open, pump doesn't leak, this is freshly built engine.
Topic Author
