Two stroke diesel trouble

gregjo1948 · Post by **gregjo1948** » Sun Jul 14, 2013 5:45 am

Could it be the valve adjustment/timing? On the 318 Detroit, the galloping was caused, I believe, by improper rack adjustment. gregjo1948

jtrichard · Post by **jtrichard** » Sun Jul 14, 2013 10:57 am

can you take the line loose from the pump and crank it with your thumb over the line see if you (A) get pressure (B) see if the fuel has air in it.... it could be you need to reseal the pump shaft ... I had that happen on 6v53 it ran like crap ... they don't like air

Post by **Lavoy** » Sun Jul 14, 2013 4:20 pm

That is what I was thinking, or pull the line off at the return and see what kind of flow you are getting.
Lavoy

ckutz1985 · Post by **ckutz1985** » Fri Aug 23, 2013 2:05 pm

It Was My Pump. I Just Rebuilt It And Everything Is Working Great Now. I Can Even Start Out In 5Th Gear And She Just Runs Like She Was new

jtrichard · Post by **jtrichard** » Fri Aug 23, 2013 3:44 pm

main seal is about all you can do with the pump is that what you did? on my 6V53 it was sucking air around the shaft at the seal and ran like crap i put new shaft seal in and she runs like new

diesel1 · Post by **diesel1** » Sun Sep 15, 2013 6:04 am

Did you work on anything else recently? All of the Detroits I worked on had a restricted fitting on the return line to maintain pressure between the pump and the injectors. Possible you took this fitting off and replaced it with a standard fitting?

Had a fuel problem with my old Pettibone/Dynahoe machine that was very similar to what you described. It would suck the filter dry and then shut down. Turned out to be a paint or rust flake in the tank outlet fitting. You might want to check again to make sure fuel is getting to the pump.

There's either a blockage somewhere or a suction leak. Gonna be something simple when you do find it.

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Two stroke diesel trouble

two stroke diesel trouble

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