Hi,
I have a problem with my Mercury thunderbolt 80 hp from 1979.
The problem is that it only fires at 3 cylinders out of 4. ( cyl 3 doesnt fire up)
We have changed the sparkplugs, we have checked the spark, we have checked the fuelfilter.
I have remove the air silencer to the carbs ( 2 of them) and when we pump the handpump on the fuelline, the top carb will flow over and the bottom carb dosent happens anything with.
We removed the bottom screws for the carbs and from the top one, it came a lot of fuel, from the bottom carb, bearly nothing.
Can it be that the bottom carb doesnt get enough of fuel so the top of the bottom two cyl doesnt fire up?
Please forgive me for my bad english, but Im from Sweden
I have a problem with my Mercury thunderbolt 80 hp from 1979.
The problem is that it only fires at 3 cylinders out of 4. ( cyl 3 doesnt fire up)
We have changed the sparkplugs, we have checked the spark, we have checked the fuelfilter.
I have remove the air silencer to the carbs ( 2 of them) and when we pump the handpump on the fuelline, the top carb will flow over and the bottom carb dosent happens anything with.
We removed the bottom screws for the carbs and from the top one, it came a lot of fuel, from the bottom carb, bearly nothing.
Can it be that the bottom carb doesnt get enough of fuel so the top of the bottom two cyl doesnt fire up?
Please forgive me for my bad english, but Im from Sweden