1997 johnson 70 vro

[seminol7]

will idle out of gear,but put in gear will idle for 2or3 minutes and will die.Runs great at higher rpm.out of gear rpm is at 1000 in gear 600-650.will crank back up no problem.any help will be great!

 

[SparkieBoat]

Re: 1997 johnson 70 vro

get a spark gap tester..should have blue streak at 7/16 gap, remove and clean carbs, pay careful attention to all of the small holes, check all fuel lines/filters. new plugs if its been a while. Did this just start or has it been going on for a while?? has anyone messed with any of the adjustment screws?? sounds like maybe idle screws out of adjustment.

 

[seminol7]

Re: 1997 johnson 70 vro

just bought boat been in water 5 times since i owned it.replaced plugs set gap at .35.took carbs off cleaned.do you know how many rounds to get a starting point on adj.screws?they were 3 rounds.Thanks for any and all help

 

[tashasdaddy]

Re: 1997 johnson 70 vro

the jets are not adjustable. the idle screw is start a 4 out. these engines were built to run, not idle.

 

[kenmyfam]

Re: 1997 johnson 70 vro

Agree completely with TD. They don't like to idle !!!

 

[SparkieBoat]

Re: 1997 johnson 70 vro

remove your idle air screws and make sure they havent been hard set causing a shank on the needle part. then soft set each one in and back out 4 turns. Adjust 1/4 Counter clock wise first and see if it gets better or worse, then adjust as needed 1/4 turn at the time, do this on the water and run for about 10 mins in between adjustments, going back to idle a couple of times then throttling up. also check your timing

 

[seminol7]

Re: 1997 johnson 70 vro

Thanks to everyone!from what I read it's probably going to be the air idle screws since they were set at three rounds out.Will try on the water as soon as possible.If it were to be a timing problem how and where do I set?Again thanks!

 

[seminol7]

Re: 1997 johnson 70 vro

Thanks to all that helped,took to water runs alot better on idle adjustment!Still needs a little more adj.but a whole lot better.Again THANKS!