Throttle dead spot

CATCH 22 · Post by **CATCH 22** » April 23rd, 2007, 4:43 pm

Just recently my Johnson 175 has a dead spot at/around 2000 RPM until 2500. It bogs down and conks unless I move throttle position Any of you motor Gurus out there have any ideas on what is causing this. It just started last time I took her out. Checked all plugs and compression OK. Hate to take it in during peak time, no telling when I'll get it back

Post by **wevans** » April 23rd, 2007, 5:29 pm

Carbed or injection? If carbed, take the cover off the carbs and have something ready to cover ALL of the carb throats, crank it, rev it and cover carbs at the same time to suck the trash on through that is in the jet or jets

probably should change out the fuel filter also

Post by **Tom Keels** » April 23rd, 2007, 5:50 pm

Sounds like the highspeed jets on the carbs are dirty.

CATCH 22 · Post by **CATCH 22** » April 23rd, 2007, 6:32 pm

Thanks Tom & Wevans for your rapid response

I'll get some seafoam and run it awhile tommorow. If that does'nt clear it up i'll try what Wevans said wuth the cover. That won't hurt my feul pump will it ?

Post by **wevans** » April 23rd, 2007, 8:02 pm

None at all

all your doing with what I said to do is choking the carbs, but unlike using the choke, when you put something over the carbs, they are forced to suck gas very hard through the jets and will usually clear out the debris

Post by **Jumptrout51** » April 23rd, 2007, 8:07 pm

They are right. Dirty jets.

CATCH 22 · Post by **CATCH 22** » May 3rd, 2007, 10:42 pm

Well, thanks to some good advice I'm seaworthy again. THANKS

grim reeler · Post by **grim reeler** » May 4th, 2007, 3:21 pm

Glad you got it fixed. I was going to suggest not putting the throttle there.

Post by **mjsigns** » May 4th, 2007, 3:30 pm

Time to get your carbs boiled