..another DK 35 making oil

[zukota]

Need a bit of help.

It's fuel - oil analysis attached.

I've noticed a lot more smoke at start up in the past few months, and it's always had a lot more fuel knock that I've liked... But I really don't know when this has started.

So I suspect injectors.

Can anybody recommend a shop to send them out to get tested? Any other tests I can make at home?

 

[SSdoxie]

From what you explain about more smoke at startup and suspect fuel knock, I would go with possible injector tests first. Any Diesel Injection Service shop can inspect, clean, and adjust injectors. Be sure to tell them you want them tested first and report of what they find before repairing them. It has been my experience with a number of injection service centers they will disassemble and clean before testing unless you specify so. If they don't test first you won't know if an injector was causing this problem. If they tell you 1 or more need major repair or replacement, get a price quote first. Most of the time you can get a new complete injector from the dealer at less than the service center charges. Don't know Kioti price but through Bobcat they are about $105 - $115 each.

If and injector is not the problem, next likely culprit is the fuel lift/supply pump. The diaphram may have a small hole in it pumping some fuel into engine block.

 

[Coyote machine]

I'd ask around your neighborhood and see where the local excavators, oil supply companies, heavy equipment operators get their diesels serviced, and see if they would do a pop test and whatever else they can to determine if you have a 'pissing' injector or two or a bad injection pump.

Also to help TBN/Kioti 'gurus' help you, please state how many hours, frequency of oil changes, etc., and any other thoughts as to what might have led up to your diluted oil.

 

[ritcheyvs]

Go ahead and test the injectors but I'd bet on the lift pump (also probably cheapest fix).

 

[VictorW]

The lift pump sits on the side of the block and could leak fuel into the block. It would be the easier of the two to check and cheapest to replace. But then again you mention more smoke at startup and possible fuel knock so this does seem more like injectors and hopefully only one.

 

[zukota]

I'd ask around your neighborhood and see where the local excavators, oil supply companies, heavy equipment operators get their diesels serviced, and see if they would do a pop test and whatever else they can to determine if you have a 'pissing' injector or two or a bad injection pump..

Good call. I have to CAT dealers within 15 miles, I suspect they can do it, and I found a shop in town that specializes in diesel injectors. I'll make some phone calls on Monday.

Also to help TBN/Kioti 'gurus' help you, please state how many hours, frequency of oil changes, etc., and any other thoughts as to what might have led up to your diluted oil.

The oil sample has 100 hours on it. 5.5% fuel dilution, but I believe that only happend in the last 15/ 20 hours based on the increased smoke at startup.

I have no idea what started this, I really don't. I've been a bit remiss with checking the oil - obviously.. leasson learned there.

There has alyways been a good deal of fuel knock, since hour new. - I bought it from Wallace and thought it was just the way the daedongs ran..

Possibly it was always a problem, but has gotten bad enough to show on the dipstick?

 

[zukota]

The lift pump sits on the side of the block and could leak fuel into the block. It would be the easier of the two to check and cheapest to replace. But then again you mention more smoke at startup and possible fuel knock so this does seem more like injectors and hopefully only one.

Are we talking lift or injection? I didn't think I had a lift pump. Just gravity to the injection pump.

I'm happy to replace that seal, when I'm waiting for the injectors to be checked / repaired. It's mowing season soon.. and I would rather only prime this thing once and have it fixed.

Anybody have a part number?

Edit: I guess Kioti calls it a feed pump. Need to go out to the barn and check the manual.

 

[zukota]

Be sure to tell them you want them tested first and report of what they find before repairing them. It has been my experience with a number of injection service centers they will disassemble and clean before testing unless you specify so. If they don't test first you won't know if an injector was causing this problem. If they tell you 1 or more need major repair or replacement, get a price quote first. Most of the time you can get a new complete injector from the dealer at less than the service center charges. Don't know Kioti price but through Bobcat they are about $105 - $115 each.

Spot on! thanks - I don't know if I would have thought of that.. Probably would have just pushed them over the counter and asked for them to be checked.

 

[VictorW]

Are we talking lift or injection? I didn't think I had a lift pump. Just gravity to the injection pump.

I'm happy to replace that seal, when I'm waiting for the injectors to be checked / repaired. It's mowing season soon.. and I would rather only prime this thing once and have it fixed.

Anybody have a part number?

Edit: I guess Kioti calls it a feed pump. Need to go out to the barn and check the manual.

They all have a lift/feed/fuel pump that takes fuel from the tank and pushes it with only a few pounds of pressure to the injector pump. Here's a link of a DK35 showing part #18 as the pump. Your problem would not be #19. The pump is a diaphram pump and it's this diaphram that can leak the fuel if there was a pinhole in it. Just so you know, this may not be the actual part# because there are listed several engine model numbers. Just check the site for your engine model#. http://www.paigetractorsparts.com/p...4-00385_-_)/01-05|~DK35-M-ENGINE/0105DK350101

 

[zukota]

They all have a lift/feed/fuel pump that takes fuel from the tank and pushes it with only a few pounds of pressure to the injector pump. Here's a link of a DK35 showing part #18 as the pump. Your problem would not be #19. The pump is a diaphram pump and it's this diaphram that can leak the fuel if there was a pinhole in it. Just so you know, this may not be the actual part# because there are listed several engine model numbers. Just check the site for your engine model#. OEM Parts

10-4. So it's just a simple diaphram pump. I'll probably just order one up, but I assume I can test it for the pinhole with a vaccum pump?

Thanks!