1982 70 hp johnson bogs on acceleration

B

Bradg

Seaman
Joined
Jun 25, 2004
Messages
52
I have a 1982 70 hp Johnson Model# J70TLCNB, it runs great most of the time, once in a while the motor<br />bogs and will stall when hitting the throttle hard<br />to pull up a tube. If I baby the throttle it will<br />catch then run fine. This seems to happen after taking a rest then next hard throttle will bog.<br />IS this a carb problem?
 
T

Tradewinds

Recruit
Joined
Aug 2, 2005
Messages
3
Re: 1982 70 hp johnson bogs on acceleration

I have an 1983 70 Evinrude (same motor back then?)<br />and we had metal gas tanks (back then). Every other year, the jets would be clogged and require service. The symptom was sub-par throttle under heavy load, but WOT with 1 or 2 people in the boat. <br /><br />The assumption was that trash in the tanks (rust) was stopping the jets.<br /><br />I bought plastic tanks at some point and the problem went away. The other option is to install a fuel filter in your external gas line. Of course this depends on whether I have correctly diagnosed your problem. <br /><br />Good Luck
 
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