2004 mercury 175hp lack of throttle reponse

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dieselram94

Petty Officer 3rd Class
Joined
Apr 14, 2010
Messages
94
Hello everyone , my grandfather has this motor and it has developed a intermitent problem. Sometimes when he goes to throttle up the motor won't rev above 2000 rpms, until he quickly lets off and nails it again. Also only does this when the motor is warmed up completly never cold. Any ideas?
 
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nbnewbie

Seaman
Joined
Oct 18, 2004
Messages
74
Re: 2004 mercury 175hp lack of throttle reponse

check compression if you haven't
 
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dieselram94

Petty Officer 3rd Class
Joined
Apr 14, 2010
Messages
94
Re: 2004 mercury 175hp lack of throttle reponse

Compression is good, I am thinking tps or something electrical. Any thoughts?
 
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