Hi Folks, I have a ford 4D Mk 1 engine that's surging on idle, I just aquired the engine and believe the fuel in the tank may have water in it as its been standing for a good while. Is water a likely cause of this?
The engine starts fine from cold with a little white smoke but thius soon disperses.
kind regards Ed
Engine surging
-
AdrianNPMajor
- True Blue
- Posts: 1174
- Joined: Sat Aug 13, 2011 6:11 pm
Re: Engine surging
Hi Ed
First thing to check is the rubber diaphragm in the vacuum governor on the injection pump. Look for a hole or tear.
Best
Adrian
First thing to check is the rubber diaphragm in the vacuum governor on the injection pump. Look for a hole or tear.
Best
Adrian
Re: Engine surging
Hi Adrian, thanks for responding to my question. Pardon my ignorance but do I need to remove/disconnect fuel pump to do this? I'm not very experienced with engines although I'm learning quickly. I have managed to find the technical manual for the engine online which has helped when doing a basic service.
Kind regards. Ed
Kind regards. Ed
-
AdrianNPMajor
- True Blue
- Posts: 1174
- Joined: Sat Aug 13, 2011 6:11 pm
Re: Engine surging
Hi Ed
No need to remove the entire pump. Mark the ends of the two vacuum pipes with some tape so you know which end screws in where when it comes to replacing them, then remove the vacuum pipes. The diaphragm housing can then be removed. It is held in place by four bolts. It's a bit of a fiddle getting at the lower one at the back but it's doable - best to remove this one first and leave the two most easily accessible bolts to last (do the opposite when reassembling). With the bolts removed, the govenor housing will come free. Inside the housing a circlip holds a circular plate in position. Remove circlip and the assembly comes apart. Expect a jack-in-the-box spring to appear. The diaphragm is now visible. Inspect for holes or tears, especially in the folds where the rubber concertinas.
Best
Adrian
No need to remove the entire pump. Mark the ends of the two vacuum pipes with some tape so you know which end screws in where when it comes to replacing them, then remove the vacuum pipes. The diaphragm housing can then be removed. It is held in place by four bolts. It's a bit of a fiddle getting at the lower one at the back but it's doable - best to remove this one first and leave the two most easily accessible bolts to last (do the opposite when reassembling). With the bolts removed, the govenor housing will come free. Inside the housing a circlip holds a circular plate in position. Remove circlip and the assembly comes apart. Expect a jack-in-the-box spring to appear. The diaphragm is now visible. Inspect for holes or tears, especially in the folds where the rubber concertinas.
Best
Adrian
Re: Engine surging
Hi Ed,
Surging can be many things but unlikely to be water in the fuel. Your white smoke can also be many things from the weather, (cold), to a faulty head gasket (water in the cylinders).
From what you say however, I would think cold weather is the cause of your white smoke if it disappears quite quickly.
Surging can be caused by a cold diaphragm in the governor which is a bit stiff or it could also be the vacuum pipes from the intake manifold. Ford did a change on these back in the late 1950's and made them both the same diameter. Earlier engines had one large and one small which made them prone to surging.
On the front of the governor housing where the two pipes from the manifold fit is a large nut. slacken this and turn the centre a little, re-tighten the nut and see if this improves things.
If you are new to tractors, the last thing you want to work on is the fuel injection pump or injectors unless you have the proper equipment and the right conditions to work in. Even I will not touch these items and I have spent time working on them in the dealership and have passed exams at Ford. They are for the specialist dealer and can cause expensive problems if not repaired correctly.
Another little trick to try if your engine has not been run for some time. Put two pints of Automatic Transmission Fluid in the diesel. This works wonders and is something I do on a regular basis on my diesels.
Surging can be many things but unlikely to be water in the fuel. Your white smoke can also be many things from the weather, (cold), to a faulty head gasket (water in the cylinders).
From what you say however, I would think cold weather is the cause of your white smoke if it disappears quite quickly.
Surging can be caused by a cold diaphragm in the governor which is a bit stiff or it could also be the vacuum pipes from the intake manifold. Ford did a change on these back in the late 1950's and made them both the same diameter. Earlier engines had one large and one small which made them prone to surging.
On the front of the governor housing where the two pipes from the manifold fit is a large nut. slacken this and turn the centre a little, re-tighten the nut and see if this improves things.
If you are new to tractors, the last thing you want to work on is the fuel injection pump or injectors unless you have the proper equipment and the right conditions to work in. Even I will not touch these items and I have spent time working on them in the dealership and have passed exams at Ford. They are for the specialist dealer and can cause expensive problems if not repaired correctly.
Another little trick to try if your engine has not been run for some time. Put two pints of Automatic Transmission Fluid in the diesel. This works wonders and is something I do on a regular basis on my diesels.
Fordson Tractor Pages, now officially linked to: Fordson Tractor Club of Australia, Ford and Fordson Association and Blue Force.
Brian
Brian
Re: Engine surging
Good morning, that's very helpful thanks. Also, just out of interest, is this the right info for my engine
http://www.fordson.se/2A_Br%E4nslesyste ... -030.pdfas
The info here seems to relate to a Pnuematic governor where as mine is the early Vacuum one ?( pre 57) although they do give info about the earlier engine too.
thanks Ed
http://www.fordson.se/2A_Br%E4nslesyste ... -030.pdfas
The info here seems to relate to a Pnuematic governor where as mine is the early Vacuum one ?( pre 57) although they do give info about the earlier engine too.
thanks Ed
Re: Engine surging
Same governor, different name. They are called Pneumatic or Vacuum by us all. They work by varying airflow in the intake manifold working on a spring and diaphram connected to the fuel delivery rack in the injection pump. Also, it is not advisable to run your engine with the aircleaner disconnected. you will find that the engine revs will increase dramatically.
One of the fitters drove a Power Major from Kings Lynn to Dereham, a distance of around 30 miles without the air cleaner pipe on. Driving down the Scarning straight, near where I live, a straight road approximately 1 mile in length, he overtook a local who was driving a Ford 8hp Anglia car. He got the Major up to about 40mph!
One of the fitters drove a Power Major from Kings Lynn to Dereham, a distance of around 30 miles without the air cleaner pipe on. Driving down the Scarning straight, near where I live, a straight road approximately 1 mile in length, he overtook a local who was driving a Ford 8hp Anglia car. He got the Major up to about 40mph!
Fordson Tractor Pages, now officially linked to: Fordson Tractor Club of Australia, Ford and Fordson Association and Blue Force.
Brian
Brian
Re: Engine surging
Ok, so in going to inspect the governor etc tomorrow and the oil level in air filter bath.
Anything I need to be careful of when doing this except for losing any important bolts?
Anything I need to be careful of when doing this except for losing any important bolts?