MF 35 Perkins White Smoke

[NoPaint]

So you don't have this?View attachment 586375

Thank you for clarification. I do have that part. Once I get the tractor inside to start working on it I will remove that little tank and clean it.

I don't know how long it had been sitting but fresh fuel and getting it hot might just be all it needs...but I'm skeptical.

My manual came today and I noticed no mention of a rubber valve seal. There is a crazy tight tolerance spec'd for the valve stem to valve guide. If fresh fuel doesn't clean it up it might be worth my time to try and see if there is a rubber stem seal I can fit over the valves and guides (to prevent a rebuild or removal of the head). Perhaps it would be worth investing in a diesel compression tester. Does anyone know what size thread the fuel injectors use so I can purchase the correct compression tester?

 

[thepumpguysc]

TU-15-11A Lang Diesel Adapter - M21 Injector

Harbr freight has a DIESEL compression tester.. 1 is basically a tester to go thru the glow plug holes but comes w/ a gauge.{u don't have GP's}
The other has multiple injector adaptors & a gauge..
Its been said that the adaptor does NOT come in the Master compr. tester kit, so I sent a link..
Thay are also easily made if u have an old injector around & are "handy"..

 

[NoPaint]

TU-15-11A Lang Diesel Adapter - M21 Injector

Harbr freight has a DIESEL compression tester.. 1 is basically a tester to go thru the glow plug holes but comes w/ a gauge.{u don't have GP's}
The other has multiple injector adaptors & a gauge..
Its been said that the adaptor does NOT come in the Master compr. tester kit, so I sent a link..
Thay are also easily made if u have an old injector around & are "handy"..

Thanks for the link! I will buy the adapter and then get a slightly better gauge than the harbor freight. I see good snap-on and other usa made diesel gauges on ebay for good prices. Thanks again!

 

[thepumpguysc]

Seeing a compression job is "usually" only performed once.. there isn't a lot of NEED for a 100.00 gauge.. that's why I said, HF.
& I hate to burst your bubble & I applaud u for buying American.. but I've tossed more snap on diesel compression gauges in the trash than any other manufacturer/vendor that I've ever used..

 

[NoPaint]

Seeing a compression job is "usually" only performed once.. there isn't a lot of NEED for a 100.00 gauge.. that's why I said, HF.
& I hate to burst your bubble & I applaud u for buying American.. but I've tossed more snap on diesel compression gauges in the trash than any other manufacturer/vendor that I've ever used..

Quick question for you: I'm hoping to pull the tractor in, get some fresh fuel in there, and see how she runs. I've only run the engine one time but I recall hearing some popping into the exhaust like diesel was dribbling in late. I think I'd like to have the injectors and pump reman'd. Is this something that you do (assuming so from your username).

 

[thepumpguysc]

Yes Sir.. That's what I do..for the past 30 years.
I'll send u a prvt msg.

 

[NoPaint]

Thanks. Well I finally got around to trying her again. Its about 35-40 degrees out. I found that the intake heater is not wired in. No amount of cranking fired it...a sniff of starting fluid and it fired up (i know i know bad practice). Once fired it was smoking white...like a lot. The rpms would randomly go up and down almost like some cylinders were hitting and then not hitting. I have the compression testing stuff on order. Step one will be compression and leakdown tests. If those prove good (unlikely) then I think its time to have the injection pump and injectors reman'd. Just to clarify the procedure for compression testing these engines (and I will look in my manual as well): put the fuel shutoff lever in off position, remove all 3 injectors and lines, install tester and crank each cylinder until a peak is reached, retry same test with a squirt of motor oil in cylinder, move onto next cylinder. Does that sound right?

In terms of leakdown - I am wholly unclear on how to perform that. Any help on that test would be awesome.

 

[NoPaint]

In this video you can see and hear the engine running and sort of surging even though the throttle isn't moving. Wind was blowing toward the camera so you cannot see the smoke but it was heavy smoke so I shut it right off.

 

[NoPaint]

Ok heres a little video before injectors were removed and shipped to our good friend in South Carolina (USA) for rebuild. We don't know what is causing the white smoke...so injector rebuild is first and then we keep moving around the engine until we find it. The knocking is mighty loud in the video but in person you can tell its not coming from the bottom end and in fact under the valve cover and oil in the pan looks good (oil is a little high from all the unburnt diesel running through the cylinders but oil is clean).

 

[Agvg]

Timing? Have you checked that?