82 150 Johnson V6-- No Power

[jarway]

Just finished testing out the subject motor on my 19 foot Sea Nymph and found that I couldn't get more than 10mph out of it. I started it with muffs in the drive and it seemed to run OK and then with a load, it bogged down. It seems that the auto choke may not work since I have to start using the manual choke lever. Starts right up though but can't get much power. Any tips on where I should start? My sense is it is carburation and maybe something to do with the choke?? Any help would be appreciated.<br /><br />Thanks.

 

[Basscat 1]

Re: 82 150 Johnson V6-- No Power

Start with the spark first. Make sure you are getting a good blue spark to each plug that should jump about 7/16 inch, a real snap.<br />Then if thats ok, start checking the carbs.<br />Is the fuel fresh?

 

[jarway]

Re: 82 150 Johnson V6-- No Power

Fuel is fresh and assumed spark was good since turned over fine but will check tomorrow. Any tips on where to start on the carbs??<br /><br />Thanks.

 

[Solittle]

Re: 82 150 Johnson V6-- No Power

Best place to start on the carbs is by reading the OMC shop manual. It will take you through the entire process with pictures and diagrams.

 

[jarway]

Re: 82 150 Johnson V6-- No Power

10-4 Will plan to order one after I insure spark.

 

[Basscat 1]

Re: 82 150 Johnson V6-- No Power

Here is a good video on carb rebuilding. Just click on the link in the middle that says marinedr. web page