Print Page - 670 Super II looses power when in the cut

Title: 670 Super II looses power when in the cut
Post by: Skattracker2 on August 24, 2015, 09:52:03 PM

Thanks to this awesome forum I was able to fix my wife's Jonsered 2152 with a new coil. Now maybe you guys can work your magic on the 670 Super II I have.

I bought it to replace my stolen 2159 and it ran good but didn't have a chain so I couldn't try cutting.

I got it home put on a new bar and chain and it looses power in cut and seems to be running rich with blue smoke. I rebuilt the carb even though it looked clean and maybe was rebuilt recently. I changed out the gas and checked fuel and air filter and they are clean. The muffler screen is clean also.

I tried adjusting the high on carb and it did not seem to move much or do anything.

What are your thoughts?

Title: Re: 670 Super II looses power when in the cut
Post by: 346xp on August 25, 2015, 10:52:43 AM

Pressure test the carb for a needle leak and or a welch plug leak both will dump a lot of gas into the engine making it pig rich 8)

Title: Re: 670 Super II looses power when in the cut
Post by: 346xp on August 25, 2015, 10:56:27 AM

I'm glad you got the 2152 sorted out!!! Did they warranty the coil for you ?? 8)

Title: Re: 670 Super II looses power when in the cut
Post by: Skattracker2 on August 25, 2015, 05:12:06 PM

I just bought a new one. The dealer didn't want anything to do with the saw since I had rebuilt the engine already.

Title: Re: 670 Super II looses power when in the cut
Post by: sablatnic on August 25, 2015, 11:03:26 PM

If the engine mounts are bad, the saw will flex too much to fully open the throttle when cutting.

Title: Re: 670 Super II looses power when in the cut
Post by: 346xp on August 26, 2015, 10:39:46 AM

Pressure for needle pop off should be 8-10 psi !!anything under that its leaking past the needle aka flooding the engine 8)

The Forestry Forum

General Forestry => Chainsaws => Topic started by: Skattracker2 on August 24, 2015, 09:52:03 PM