plastic debris in cooling system

[Limited-Time]

Short overview of the situation: 5.7 LX Alpha drive Gen II. Raw water cooled. Never experienced any overheating problems prior to this incident. Had the impeller replaced this spring. First time out 2 problems, no speedo and noticed the temp. crawling up at idle speed. The speedo issue was not a concern to me. Figured the two issues not related but the temp problem is probably an impeller issue. Returned the boat to dealer/repair shop.Dealer states they pulled some plastic debris out of the cooling system. I never saw the debris. I can see something covering the intake greats, and reducing or stopping the water flow completely. But is it possible/likely to suck in a piece of plastic large enough to cause a low speed cooling issues and still have the temp. run normal at cruising speeds.

 

[tommays]

Re: plastic debris in cooling system

<br /><br />this is a GEN II pump i guess anything is possable but they have made it pretty hard to pass things through it <br /><br />i have pumped stones and sand big enough to hold a thermostat open a few times but never weeds or plastic<br /><br /><br />did the old pump have blades missing? <br /><br />tommays

 

[Limited-Time]

Re: plastic debris in cooling system

tommays,<br />I never saw the old impeller. But you'd think the repair shop would mention it if in fact the old impeller was in pieces when they went to replace it.

 

[TilliamWe]

Re: plastic debris in cooling system

You would think that, but you may not be right! Just a guess, but they either didn't replace the impeller at all, or when they replaced it, a blade or a few were missing & they didn't flush the system properly.<br />Hope it's working better now for ya.

 

[Limited-Time]

Re: plastic debris in cooling system

From my conversation with the repair shop I was led to believe the plastic they found was from an external source. Like I'd sucked up something from the lake.