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Recent content by technish

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    Rubber exhaust hose heating on one side, good water flow new manifold and riser 5.7L carburetor

    I didn't pull the other exhaust. The riser installed is identical to the one removed, same water outlets. I'm not sure if there Crusader. The sides of the rubber tube are getting hot, not the top or bottom at all.
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    Rubber exhaust hose heating on one side, good water flow new manifold and riser 5.7L carburetor

    Try this link to a video if water flow
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    Rubber exhaust hose heating on one side, good water flow new manifold and riser 5.7L carburetor

    The exhaust over heats at idle, the water tube supplying the manifold was replaced as well. I'm thinking there's somehow combustion in the exhaust from an excessively rich condition on that bank. Or a partially plugged exhaust hose further down the line that isn't showing on vaccum gauge.
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    Rubber exhaust hose heating on one side, good water flow new manifold and riser 5.7L carburetor

    Tee to muffler is 4". 6" out of the muffler. The owner said that the 90 deg elbow and the up stream rubber pipe melted on the bad side. I'm not completely sure he changed both sides of the tstat housing, he told me he changed everything. Maybe combustion from excess fuel is happening in the...
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    Rubber exhaust hose heating on one side, good water flow new manifold and riser 5.7L carburetor

    Tee to muffler is 4". 6" out of the muffler. The owner said that the 90 deg elbow and the up stream rubber pipe melted on the bad side. I'm not completely sure he changed both sides of the tstat housing, he told me he changed everything. Maybe combustion from excess fuel is happening in the...
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    Rubber exhaust hose heating on one side, good water flow new manifold and riser 5.7L carburetor

    The owner of the boat just started changing everything in sight to try to fix the problem. None of it worked
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    Rubber exhaust hose heating on one side, good water flow new manifold and riser 5.7L carburetor

    I'm getting that flow of water at idle. The exhaust travels down stream from both risers through 4" rubber tube. The even bank (the side with issue) has a 12" length of 4" to a 90deg fitting than flows through a 14×4" pipe into a tee, at the tee the odd bank 12" rubber hose joins it. From tee...
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    Rubber exhaust hose heating on one side, good water flow new manifold and riser 5.7L carburetor

    Raw water cooled fresh water boat, center riser. I removed the 4" rubber tube from the riser on the affected side and ran the engine, I got aprox 1.5 gallons of water in 15 seconds from the outlet of the riser. There is a wide water outlet on the top exit side of riser and a 1/4" × 3/8" hole...
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    Rubber exhaust hose heating on one side, good water flow new manifold and riser 5.7L carburetor

    I am trying to find out why the rubber tube is heating up on the even bank of engine. It is a 1993 Crusader 5.7L carborated inboard. Details are the even bank rubber hose past the riser is getting 200+ degrees while the odd bank stays around 90 degrees warmed up. New parts are manifold...
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