"79 318s, just replaced impell
"79 318s, just replaced impellers, (old ones were intact). Now I have the following issue with one engine: the temp cycles between 140 and 190 only at idle. It takes it about 3 minutes to complete the cycle and then it starts over again.
At any point during the cycle if I throttle up - temp will immediately decrease to 140/150 and stay there. If I return to idle it begins cycling again.
both upper and lower helm gauges do same thing. No temp issues prior to changing the impeller.
/Clint"
"79 318s, just replaced impellers, (old ones were intact). Now I have the following issue with one engine: the temp cycles between 140 and 190 only at idle. It takes it about 3 minutes to complete the cycle and then it starts over again.
At any point during the cycle if I throttle up - temp will immediately decrease to 140/150 and stay there. If I return to idle it begins cycling again.
both upper and lower helm gauges do same thing. No temp issues prior to changing the impeller.
/Clint"