Ford 6610 Lacking Power

[Sam6610]

I've 2 Ford 6610s, a mk1 from 1984 and a mk2 from 1986. The mk2 is seriously down on power and we can't work out why, it won't keep up with the mk1 at all and both are NA standard, we've done all of the usual checks and gone through the fuel system and fixed any issues with the lines dragging air. This hasn't made any difference so we decided to turn the fuel pump up (the minimec inline injector pump), this hasnt made any difference powerwise and the tractor struggles and labours just as much as before. Anybody got any ideas what to do next? The engine hasn't done a great deal of hours and runs sweet as a nut, its had new injector nozzles, new lift pump, new filters etc. Any help would be greatly appreciated, cheers.

 

[powerontheland]

i suspect that it wants a good dose of bloody hard work???

 

[Sam6610]

i suspect that it wants a good dose of bloody hard work???

It's had a good go on a 10 ton grain trailer and struggled to set off with maybe 3 ton in, doesn't have an ounce of poke

 

[powerontheland]

Good days work on a power harrow, or better still a slurry pump

 

[Lincs Lass]

Have you cleaned or replaced the air filter

 

[Sam6610]

Yes air filters are clean

 

[Lincs Lass]

Not left a spool valve open and its constantly pumping

 

[Sam6610]

No, they're working fine, can hear it straining when its pumping.

 

[forblue]

Might sound silly but have you checked the handbrake cable pivot's where cable attaches to actuator rod on turret housings, went out to one years ago that had not even had it's first service and found these had partly seized. a common problem i found,

 

[Sam6610]

Yeah checked those and the brake adjustments, made sure they weren't sticking on or binding

 

[michael N123]

Don’t all Old Ford’s lack power

 

[Bury the Trash]

well thats a bit unfair,
the one s we had used to go ok down (a quite steep ) hill with a quite strong wind behind them

 

[Tractortech]

Now Then..
I'd have both tested on a Dynamometer. That way you can make a move informed diagnosis.
I've just done a John Deere 3050, 98 horsepower (obviously been tickled a bit) on the Dyno. It lost a thousand RPM on a bit of an incline when flat out. It turned out that the brake back plates were warped and causing drag..

 

[balerman]

5000s used to vary enormously in power output even straight from the factory.Can only really be the injector pump,get it on a dyno then if it’s less than 80hp refurbish the pump.

 

[Sam6610]

Unfortunately i've not got access to a dyno nearby, i'll probably go and get the pump recondtitioned next and then see how it performs

 

[Mur Huwcun]

Did they not replace the later 6610s with 64 and 6810 because of power issues?

If they’re both same pump I would swap them over before starting to reconditioning them, it’s a bit difficult to find any one to properly recondition an injector pump these days especially an inline one. All the old school ones have retired

 

[Tractortech]

No actual dealer of any sort??

 

[Sam6610]

Did they not replace the later 6610s with 64 and 6810 because of power issues?

If they’re both same pump I would swap them over before starting to reconditioning them, it’s a bit difficult to find any one to properly recondition an injector pump these days especially an inline one. All the old school ones have retired

Thats true but the amount of power this is lacking is concerning, completely gutless.

 

[flywheel]

Get them both on a dyna & come back on here then .

 

[zero]

Head gasket?
Have you changed the oil in the injector pump? Early ones had seperate oil to newer ones which had engine oil pumped through them. Old or dried oil can affect the governor's.