I have a catalina 30 with universal 25 diesel engine. On starting in runs for a moment then quits. I have replaced the fuel filters, the fuel pump, air pump and cleaned the pickup line in the tank. Nothing worked. My question what could the problem be? What do I need to do? I am at wits end.
stalling engine
- Thread starter cloydmilton
- Start date
Could be a leak in a fuel hose allowing air into the lines. Inspect all the hoses for cuts or tears. You could also try putting the intake hose into a Jerry can of fuel to help troubleshoot.
Check your tank vent. Mud wasps love to build in them. With our venting, the tank develops a vacuum and won't feed enough fuel to sustain running the engine. After the engine stops, the vacuum releases and enough fuel will available to start but then the process Groundhog Days...
Remove your fuel tank fill cap and try starting to see if the fuel tank vent is clear.
Don't forget to replace the cap
.
Don't forget to replace the cap
.
Fuel Starvation and The Obscure Check Ball Valve
Fuel Starvation and The Obscure Check Ball Valve
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Fuel Starvation and The Obscure Ball Check Valve
Fuel Starvation and The Obscure Check Ball Valve
and
Fuel Starvation and The Obscure Ball Check Valve
I agree with the previous suggestions. Had the fuel/air leak, had the ball check problem as well. Found the air leak by temporary use of a 2" length of clear tubing just before the high pressure pump. Air leaks in the delivery system will be visible. Don't forget to remove this temp tubing.
Also could be a screen on the fuel pickup tube.
Also could be a screen on the fuel pickup tube.
@cloydmilton I know you’re not new to this activity. Diesel engines for all there parts and functions are really simple systems.
They need clean fuel, a source of air, and adequate compression to ignite the fuel.
What you describe sounds like lack of fuel. Find a place to start, I suggest the fuel tank. Examine the tank pick up pipe to assure it is not clogged. Progress along the path of the hose checking, as suggested by @Davidasailor26 , to the engine for leaks or clogs. Filters and the hoses entering the filter can capture goop. The fuel lines right up to the injectors are vulnerable to air/fuel leaks.
It can feel tedious but the process is important to eliminate the problem.
They need clean fuel, a source of air, and adequate compression to ignite the fuel.
What you describe sounds like lack of fuel. Find a place to start, I suggest the fuel tank. Examine the tank pick up pipe to assure it is not clogged. Progress along the path of the hose checking, as suggested by @Davidasailor26 , to the engine for leaks or clogs. Filters and the hoses entering the filter can capture goop. The fuel lines right up to the injectors are vulnerable to air/fuel leaks.
It can feel tedious but the process is important to eliminate the problem.
Thanks makess sense. As soon as rain stops I'm on it.
I had a similar problem and took all the same steps, and it turned out to be a connection: RPM Issue Solved