Jd 6830 slow starting

[Massey Holland]

My neighbours 6830,has become increasing slow to start.We have replaced the fuel lines,which has improved it,but I notice it's pressurising the fuel tank,is this common with these,or have we an injector problem?

 

[deere150]

Make sure you've got fuel lines nipped up properly. Otherwise it could be the injectors. My 6320 pressurised fuel tank when it had a perished pipe.

 

[Grizzly_550]

Is the o ring in the water trap still there?

 

[8100]

Dont the filler cap have a small vent in them? Maybe worth a looksie

 

[green giant]

More likely to be sucking air via the fuel supply hoses, replace them all, check the fuel cap to, swap it with anoth tractor if possible.

 

[Rusty#1]

Double check fuel lines and water trap o ring's failing that maybe worth trying a suction control valve, genuine denso ones available of ebay for about £80 but deffo sounds like a fuel line/oring prob

I've said it before but I'll say it again and again lol, a tin of wurth diesel cure to a tank once a month does a 30series the world of good

 

[Massey Holland]

Thanks lads,it could be a suction control valve ,by the sound of things,as i'm fairly sure that the fuel lines are ok,the water trap o ring is the only other thing that i didn't look at.

 

[Rusty#1]

Thanks lads,it could be a suction control valve ,by the sound of things,as i'm fairly sure that the fuel lines are ok,the water trap o ring is the only other thing that i didn't look at.

Check the water trap/water trap to filter oring first, it's worth getting the seal kit for it as nobody ever bothers stripping/resealing the whole thing but it's easy job and then you know it's right

 

[Boothy]

If it's the suction control valve it will hunt at idle I would do as others have said check pipes and filter o ring

 

[Massey Holland]

Thanks lads,i went and had a look this morning,i seems someone left out the o ring between the filter and the sediment bowl,at the last service,it worked ok for a while,and funnily enough it didn't leak.
I put one in,it seems fine now,tank pressure gone,it must have been drawing in a nice bit of air.
Thanks again.

 

[Grizzly_550]

Seen this many times before, usually when the customer service machines themselvez. Glad you got it sorted.

 

[Northdowns Martin]

Searching forum for an issue with my JD brought me there! Our JD 6534 has developed a fault in that it is pressurising the tank. We changed the cap think it wasn't venting but to no avail. Put a rubber glove over neck which processed to inflate. Any suggesting before stripping injectors off?

 

[solo]

Does it have the old mechanical fuel pump with priming lever on side? If it does the diaphragm may be split inside. Pretty sure that was an issue on JD 6410 here many years ago. to do with pressure in tank. Changing the good old JD porous fuel hoses is a good a place to start making sure the clamps are good too. I use fuel hose from Pirtek now which is lasting much better.

 

[Northdowns Martin]

Good news problem cured! Replaced all hoses and clips. Rubber glove no longer inflating more the opposite ie. slight suction.