hard to run

[bill320]

I have a Johonson 1963 40 hp. it will start If I spray starting fluid in but it only runs for a 10 sec. than it stops and won,t start

 

[alldodge]

Check to see if carb is getting gas
Make sure the gas is good and not real old stuff
If those 2 are good, check compression

 

[tphoyt]

First off don’t use starting fluid. It has no lubricant. Use your fuel oil mix in a spray bottle or old clean and dry water bottle with a little hole in the cap to squirt fuel into the carb throat.
Check to see if your getting fuel to your carb. If you are then it’s likely time to address a carb rebuild. If not it’s time to track down fuel delivery problems.
Report back
Best

 

[bill320]

thanks guys I have rebuilted the carb new points retime new fuel lines good gas I have try to spray gas in the carb throat it seams that there is no fuel getting to the plugs I pull the chock but they are dry.

 

[alldodge]

As you know, if its not getting gas its not going to run. You sprayed gas in and it still will not run.

Suggest doing a compression test and then need to find out if your getting good spark

 

[racerone]

Does spark jump a gap of 5/16" on a test device.----Sparkplugs are not used for this test.