My Lawnmower Forum banner
1 - 7 of 7 Posts

·
Registered
Joined
·
3 Posts
Discussion Starter · #1 ·
Working on Predator 6500/5500W generator with 420cc engine. It will start and run at a slow rpm for about 5 seconds and dies. I replaced the carb after trying the two that camber with it. Replaced fuel cutoff valve and all fuel lines. Checked and adjusted the valves. Nothing changes. It supports and dies. I tried putting fuel in carb with not effect. There are no air leaks behind carb. Confirmed proper gaskets. Governor linkage and springs are properly installed. Low oil shutdown is not there problem. The anti backfire solenoid is installed and I tried a solenoid where I cut the plunger of sand it has the same problem. It's seems like it has a little of blowback out of the carb. Any suggestions? It is a model 63083
 

·
Registered
Joined
·
3 Posts
Discussion Starter · #3 ·
Nope about the same. But it won't restart without the choke on. More info, compression test was 70 psi. Also, a new plug was black, sooty, and almost fouled after about 5-6 start-sputter 5 sec - die evolutions...
 

·
Registered
Joined
·
392 Posts

·
Registered
Joined
·
397 Posts
I prefer a spark tester where the spark has to jump a gap, Briggs sells a tester with a 1/4" gap. If the spark jumps that gap, you're good to go. The HF kind just tell you there is voltage present. but i do like those as they're easier to see in the day time or when diagnosing cylinder(s) dropping out .
 
1 - 7 of 7 Posts
Top