Engine problem - fuel injection pump?
Posted: Fri Oct 16, 2009 4:57 pm
Hello all
Today I fitted a new lift pump to my ASP (A rare Major variant made up over the decades from parts of different tractors).
That job was fairly straightforward - the problems became apparent after starting the tractor up again. Last time the tractor ran - a months or so ago, it was running very nicely. This time, however, it ran extremely fast, with an angry sound and lots of smoke (maybe the smoke is to be expected as it is very cold).
When I tried to shut the engine off, the baler twine connected to the fuel cut-off lever broke. At first I just thought that this was an example of why baler twine wasn't fitted to other Major models, but then I noticed that the lever itself was stuck
The only way I could stop the engine was with the decompression lever.
As the fuel cut-off lever assembly also has the excess fuel (cold start) button at its base, I was wondering if the problem with the stuck lever could have something to do with the fast running problem?
There is oil in the air cleaner, and also the gaffer tape (another detail specific to the ASP) over the hole in the intake air pipe while not particularly fresh, doesn't seem to be leaking - otherwise I'd suspect a vacuum leak.
Could there be something (fuel metering rack?) stuck inside my fuel pump that is causing the problem? Does anyone have any ideas?
Don't laugh, but I have my fingers crossed hoping that I can get this running properly tomorrow - saturday is my day off, then it's back to work on sunday...
regards to all,
John-Paul
Today I fitted a new lift pump to my ASP (A rare Major variant made up over the decades from parts of different tractors).
That job was fairly straightforward - the problems became apparent after starting the tractor up again. Last time the tractor ran - a months or so ago, it was running very nicely. This time, however, it ran extremely fast, with an angry sound and lots of smoke (maybe the smoke is to be expected as it is very cold).
When I tried to shut the engine off, the baler twine connected to the fuel cut-off lever broke. At first I just thought that this was an example of why baler twine wasn't fitted to other Major models, but then I noticed that the lever itself was stuck

The only way I could stop the engine was with the decompression lever.
As the fuel cut-off lever assembly also has the excess fuel (cold start) button at its base, I was wondering if the problem with the stuck lever could have something to do with the fast running problem?
There is oil in the air cleaner, and also the gaffer tape (another detail specific to the ASP) over the hole in the intake air pipe while not particularly fresh, doesn't seem to be leaking - otherwise I'd suspect a vacuum leak.
Could there be something (fuel metering rack?) stuck inside my fuel pump that is causing the problem? Does anyone have any ideas?
Don't laugh, but I have my fingers crossed hoping that I can get this running properly tomorrow - saturday is my day off, then it's back to work on sunday...
regards to all,
John-Paul