I have a 300B JD industrial tractor 3cyld. that has a pretty good miss in it and i'm having a hard time tring to find it. I have adjusted valves, pulled the injector nozzels and replaced washer seals (not carbon seals though), there are no leaks in fuel lines. I can't tell if it is a bad injector or a bad valve. The engine has a cutout/popping to it. I can crack lines to injectors (with engine running) on all 3 cyl and the all miss even worse. So injectors should be ok and I should do a valve job on it?
missing problem JD
- Thread starter Graper00
- Start date
W5FL
Veteran Member
- Joined
- Apr 7, 2000
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- Location
- Central Texas
- Tractor
- TYM T-1104/TX10 Loader Kubota M6800SD/LA1002 Loader Kubota RTV900
Please run a compression test first. It is very easy to do and will answer your questions as to valve condition. Also need to know the timing that the fuel is being injected. I suspect you can get an idea by feeling of the exhaust and air intake, but compression test will still need to be run.