445 Hard Starting, Low Power, Fuel Pump Hose

[BBO]

After working for days on the Electronic parts of the fuel injection system and replacing both ignition coils I found the problem.

I had already replaced this hose once on June of 2009, but look what it looks like now.


When I replaced this in 2009, the JD place actually gave me free a short section of 5/16" hose and 2 clamps.
I though this fixed it. Now I think he gave me the incorrect hose.
It looks to me like this should have been high pressure fuel injection hose.
However the JD parts says to make it out of TY22324 hose, and unless The JD place told me wrong this is just standard 5/16" 30R7 fuel hose.

So anyone with 445 troubles should check this hose.
Back in 2009 it would run 20 minutes, and then quit. After cooling it would run 20 more minutes.

This time the symptoms were different.
It was slow and hard to crank, then seemed to run OK afterwards, but the engine would pulsate as if something was wrong with the governor, maybe caused by sensor problems.
Eventually it got so I could not engage the PTO at all without choking the engine down. It seemed like then it was firing on only one plug.
I just spent loads of time, trying to determine if I had a fuel or firing problem, without a leak-down tester or fuel pump gauge.

So I will get some of the injection hose today and see if my problem is fixed.

 

[BBO]

This thing now runs like a new.

 

[Gittyup]

Glad you got it fixed and thanks for posting the symptoms/solution.

 

[beenthere]

Interesting. I was just reading a note that I made years ago about the short fuel pump hose in the 445. My son has my old 445 and I should remind him of the potential problem. Glad to hear you found yours and have it fixed.