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  1. R

    Mercruiser 3.0 low compression one cylinder

    I have a 2001 3.0 mercruiser. I had the motor rebuilt last year. The boat ran good for the whole year. Winterized and stored the boat in a garage. Took the boat out last weekend and had an issue with blow by, oil out through the valve cover. Checked compression and had 60PSI on cylinder 3...
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    2001 Mercruiser 3.0 oil valve cover to flame arrestor

    I have a 2001 3.0 Mercruiser 135HP. The motor was rebuilt last year and only has about 20 hours on it. The boat was winterized end of last year and kept in a garage. Took the boat out for the first time this weekend. Boat started up and ran great. Had the boat out for about an hour at...
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    Mercruiser 3.0 exhaust manifold and elbow

    I purchased a 2001 Marada with a blown 3.0 mercruiser 181 (knew this ahead of time). The 4th piston was shattered. I have ordered a rebuilt replacement motor. The blown motor had sat for 3 years prior to being cranked. I have been getting different advice on replacing the old exhaust...
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