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re-built Merc. 175 is difficult to tack up

dhackney

New member
I have a newly re-built merc. 175 block sat onto a XR-4 - 150 lower unit. It starts up really good with the fuel injection system , however it is difficult to plane up. tack up . It seems to flood out or have throttle issues. It sounds as if the spark isn't advancing. I had one mechanic tell me that I had a scorch piston wall , however the compression check seems good, Any Ideas? Thanks, Dhackney
 
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