LogicallyCompromised
Well-Known OPE Member
- Local time
- 1:48 AM
- User ID
- 3457
- Joined
- Jun 28, 2017
- Messages
- 6
- Reaction score
- 7
- Location
- connecticut
back story...
dolmar 7900, ran minto for 3 years with minimum carburetor adjustments throughout the seasons. about 4 months ago i cut a 9" hickory hanging over a friends house. saw popped on 2nd and idled minto on 3rd like it has countless times before. i let the saw warm up as i put some ropes in the tree and made my face cuts. after the face cuts there was a teaching moment so i shut the saw off...the saw has never ran correctly since.
i know, i need to find the source of this unregulated fuel, during starting, it pisses fuel out intake, compression release and exhaust. the couple times i have got it to run is with the low side all the way in. one puzzling question is, when i pulled apart the carburetor for first time in 3years it did not appear to have a welch plug. i have seen images on here of other 64xx/79xx zama carbs without welch plus either. were these people rebuilding carburetor and took an image in between progress or do some carbs not need them? this does not make much sense to me as i would think it would cause the saw suck more fuel in?
i did put the welch plug that came with the rebuild kit in but maybe it is not sealing well?
what is the point source of all the extra fuel?
thank you for your time!
dolmar 7900, ran minto for 3 years with minimum carburetor adjustments throughout the seasons. about 4 months ago i cut a 9" hickory hanging over a friends house. saw popped on 2nd and idled minto on 3rd like it has countless times before. i let the saw warm up as i put some ropes in the tree and made my face cuts. after the face cuts there was a teaching moment so i shut the saw off...the saw has never ran correctly since.
i know, i need to find the source of this unregulated fuel, during starting, it pisses fuel out intake, compression release and exhaust. the couple times i have got it to run is with the low side all the way in. one puzzling question is, when i pulled apart the carburetor for first time in 3years it did not appear to have a welch plug. i have seen images on here of other 64xx/79xx zama carbs without welch plus either. were these people rebuilding carburetor and took an image in between progress or do some carbs not need them? this does not make much sense to me as i would think it would cause the saw suck more fuel in?
i did put the welch plug that came with the rebuild kit in but maybe it is not sealing well?
what is the point source of all the extra fuel?
thank you for your time!