8N wont stay running ?

Robert tucker · Jan 9, 2022

Hey guys I sure hope someone has had this problem.
I have a 51 8n and she was running perfect and then all of a sudden it started spitting and died. It would start up at idle and run but when i gave it some gas she died. checked my spark and its fantastic. just rebuilt the carb but i still thought it was carb so i ordered a new Carb. Came in today I first checked the float and adjusted it. then put it on and she started up but same thing. Spark and Fuel there support to run. HELP

old · Jan 9, 2022

Fire it up and the moment it dies pull the carb drain plug and make sure you have a good steady flow of gas that will fill a pint jar in less then 3 minutes and 2 is even better. If you have that recheck the spark.

Robert tucker · Jan 9, 2022

15 OZ in 3 minutes I my math is correct that's .9 pints

I would say it looked more like a trickle.

old · Jan 9, 2022

If a slow trickle then you have a fuel clog some place. Could be in the tank or the line or the elbow screen

Robert tucker · Jan 9, 2022

Thanks ! ran a second test and it was .87 pints in 3 minutes.

New fuel tank but i did have problem with the sediment bowl. I will tare it down and rebuild it. Atleast you gave me a starting point Thanks for helping!!!!

old · Jan 9, 2022

Always happy to help if and when I can

jhwis · Jan 9, 2022

Some type of blockage in sediment bowl or a
vaccuum of some sort making fuel go to
slow.

Steve in IL · Jan 10, 2022

I use a small spray bottle with gas in it for this type of issue.
With intake hose removed, spray some gas into the carb
when the engine starts to die. If it picks back up for a bit,
its a fuel supply issue.

jhwis · Jan 10, 2022

too slow

Robert tucker · Jan 10, 2022

FIXED !! I had rebuilt the carb and then a new carb,I had a good blue spark from all plugs. Cleaned fuel lines and all filters. and the answer is the Condenser. How can i have a good blue spark with a bad condenser ? Thanks to all.

old · Jan 10, 2022

A condenser can work for a few minutes then stop working after it get warmed up

Sean in PA · Jan 11, 2022

(quoted from post at 15:38:21 01/10/22) A condenser can work for a few minutes then stop working after it get warmed up

Same goes for the coil.

8N wont stay running ?

Robert tucker

New User

old

Well-known Member

Robert tucker

New User

old

Well-known Member

Robert tucker

New User

old

Well-known Member

jhwis

Member

Steve in IL

Member

jhwis

Member

Robert tucker

New User

old

Well-known Member

Sean in PA

Well-known Member

Similar threads