coil?

[seantim]

i have a 75hp rude model#75643D cannot get it up on plane has great comp. #1=120 #4=115 #3=115 seems to have good spark at idle carbs appear to be clean i checked the coils and each coil has 1.2k res. at coil pack to plug boot connection it has autolite plugs i'm going to change them to champion (what# do i need) i have a manual on the way so i can do a link and sync can someone help me >?

 

[seantim]

Re: coil?

forgot to say its on a 16ft bass boat and a lite one

 

[red10]

Re: coil?

The plugs are QL77JC4 gapped at .030, i'm not sure on the coils.

 

[oldboat1]

Re: coil?

could be the trim angle or shaft length. The ventilation plate should be even with the bottom of the boat, or within about an inch higher or lower. You may have a long shaft motor on a 15" transom, and that could cause drag.<br /><br />If the motor is not revving up to speed, though, that's another issue. A clogged carburetor jet can be the culprit -- sounds like the electrical system is working OK.