![Mercruiser 5.7 1990 - How do I test water circulation pump? - The Hull Truth - Boating and Fishing Forum Mercruiser 5.7 1990 - How do I test water circulation pump? - The Hull Truth - Boating and Fishing Forum](https://cimg1.ibsrv.net/gimg/www.thehulltruth.com-vbulletin/2000x1504/img_1929_ea8d2659546230d0537817c63d8c117ce616dee6.jpeg)
Mercruiser 5.7 1990 - How do I test water circulation pump? - The Hull Truth - Boating and Fishing Forum
![Mercruiser not pumping water- Hey guys I just replaced the impeller on my alpha one and it's still not pumping water out. Checked the elbow and manifold and lines and looks good. Mercruiser not pumping water- Hey guys I just replaced the impeller on my alpha one and it's still not pumping water out. Checked the elbow and manifold and lines and looks good.](https://i.redd.it/mercruiser-not-pumping-water-hey-guys-i-just-replaced-the-v0-2n0vh2q7ivfa1.jpg?width=3024&format=pjpg&auto=webp&s=2036b6717950cbca988e70f90691bee23882ea6d)
Mercruiser not pumping water- Hey guys I just replaced the impeller on my alpha one and it's still not pumping water out. Checked the elbow and manifold and lines and looks good.
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![Alpha one mercruiser- My lower unit is not sucking up water to the engine. I assumed it's a bad impeller but it seems fine to me. Does it look bad and should Alpha one mercruiser- My lower unit is not sucking up water to the engine. I assumed it's a bad impeller but it seems fine to me. Does it look bad and should](https://i.redd.it/alpha-one-mercruiser-my-lower-unit-is-not-sucking-up-water-v0-f319kpjpsx5a1.jpg?width=3024&format=pjpg&auto=webp&s=b8c1b0c0aa31a0f1827cbbdc942c654cc2eb6f94)
Alpha one mercruiser- My lower unit is not sucking up water to the engine. I assumed it's a bad impeller but it seems fine to me. Does it look bad and should
![Alpha one mercruiser- My lower unit is not sucking up water to the engine. I assumed it's a bad impeller but it seems fine to me. Does it look bad and should Alpha one mercruiser- My lower unit is not sucking up water to the engine. I assumed it's a bad impeller but it seems fine to me. Does it look bad and should](https://i.redd.it/alpha-one-mercruiser-my-lower-unit-is-not-sucking-up-water-v0-pm19a5jpsx5a1.jpg?width=3024&format=pjpg&auto=webp&s=a7dc39cbe6ffd11993a247f9d61cc996b694085e)
Alpha one mercruiser- My lower unit is not sucking up water to the engine. I assumed it's a bad impeller but it seems fine to me. Does it look bad and should
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Amazon.com: GHmarine 43026Q06 Water Pump Impeller Kit for MerCruiser Alpha 1 Gen 2 Sterndrives and Mercury Marine Outboards 47-43026Q06 8M0100526 : Everything Else
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Mercruiser 6.2L MPI IO overheat up to 200 within 60 seconds - The Hull Truth - Boating and Fishing Forum
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Quicksilver 44292A3 Water Pump Base Repair Kit - MerCruiser MR and Alpha One Drives : Amazon.ca: Automotive
![Mercruiser not pumping water- Hey guys I just replaced the impeller on my alpha one and it's still not pumping water out. Checked the elbow and manifold and lines and looks good. Mercruiser not pumping water- Hey guys I just replaced the impeller on my alpha one and it's still not pumping water out. Checked the elbow and manifold and lines and looks good.](https://preview.redd.it/mercruiser-not-pumping-water-hey-guys-i-just-replaced-the-v0-wd89v2q7ivfa1.jpg?width=640&crop=smart&auto=webp&s=f6f1f5be0b2cfe611287674b99748fa25cb396e2)