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Honda Bad leak down test after HG, timing and water pump

Home Forums Stay Dirty Lounge Service and Repair Questions Answered Here Honda Bad leak down test after HG, timing and water pump

This topic contains 0 replies, has 1 voice, and was last updated by Michael Trejo Michael Trejo 5 months, 1 week ago.

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    Michael Trejo
    Michael Trejo
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    I have the engine out of car(D16y7) I’m doing a swap because the existing engine was knocking. Bought a used engine on FB from a guy and did a leak down test on it. Everything was fine until I replaced the head gasket, water pump and timing belt. I follow all the steps I have it all set to TDC On the crank and the camshaft. Belt is on tensioner pulley is on but not tightened. I rotate the engine counterclockwise 3 teeth on the cam gear with my hand on the top of the cam gear and belt. Tension is good so I tighten the tensioner in place and rotate the engine counter clockwise until it’s back at TDC(crank and cam). I do a leak down test and cylinder 1 is less that 10% leakage but the rear of the cylinders are 20% leakage or more at the top of their compression stroke.

    Could I have damaged something while cleaning the cylinder head off from gunk? I was extra careful and worked on a layer of cardboard. I’m noticing the leak from the exhaust side of the engine so it’s the exhaust valves. I assumed timing was off but I checked timing countless times and tension.

    Any ideas??

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