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Sorry my mistake, I see yours is a M4700DT

Thanks Lugbolt and Geohorn, I had not realized that a squirt of oil could cause ignition and damage the gauge ( especially the manual tells you to do this ). Hopefully I have not bent a rod from hydraulic force. I wouldn't think it could cause a runaway engine, unless one out of 6 cylinders can...

A lot of tractor owners have said this, perhaps I am too pessimistic, you read forum reviews and mechanic websites that give out the worst prognosis and instill fears in people including myself. They are based on the perfect engine. I just didn't want to put the rod through the block. I imagine...

Thanks Dan I will note that. Its just a bit strange that my compression is 400 psi on one cylinder and the tractor is so old (40 yrs) that i figured it couldnt still have that high a compression. This tractor has never been looked after going by the condition of everything else, I doubt if the...

Thanks Lugbolt I might just do that. Why would you say oil into the cylinder didnt do it any good? Even the manual tells you to do a squirt of oil on a compression test. Not a running test, just a battery crank test.

Okay guys, Sorry for the long thread but I am trying to be thorough. Here are my engine (S2600-A) tests done. Re: previous thread, post injector ignition knock on M4500DT. Engine starts easy doesn’t run rough, has blow-by, if I remove dipstick some bubbling of oil. Only blows a bit of smoke...

Jim I am going to try what you said and swap injectors this weekend. I understand if the noise follows it then it is the injector. If the noise doesn't move could it still be the injector pump timing causing the nailing? Or do I then check if its caused by play in the big end bearing?

Thanks Russell i haven't done the valves yet, I will be taking the rocker cover off anyway because I can't see the valve decompressor which its supposed to have. Maybe someone has taken it off, I don't want a runaway engine. You are correct, it will quieten down the engine but wont satisfy a...

You could be right about compression, the engine turns over easy. It fires up easy as well. At first it didn't want to start, white smoke billowing and eventually it would start on the second battery. I thought some glow plugs were gone. It turns out there was no power to any of them. I thought...

When I first bought the tractor I did complete oil changes. I noticed metal shavings in the transmission oil (probably never been changed which was black) filter which I read to be normal. I read it was almost impossible for engine oil to be in the transmission. Shavings couldn't be from engine...

replied most of your question next post next post but answer to return line I fixed it but it may not be leaking from there, diesel is over the RH side of the tractor again which could be the fuel bleed still leaking or it may be leaking at the injector itself. Its not leaking at the injector...

Diesel purge is supposed to clean injectors and the fuel system with great reviews, but I have my doubts about it. You mentioned fuel cleaner so I thought this is what you meant by Inj cleaner ? It may be okay in some circumstances but my tractor starts perfectly and runs without missing, I...

Thanks Jim, I have looked at the injector cleaner products. I bought some already but it was only standard injector cleaner to be added to the fuel in small amounts. I put some in my truck tractor and excavator. I see the diesel purge product is designed to be used instead of fuel. One we have...

Thanks guys I will try moving the injectors around. i have had a fuel leak at injector on number 6. So its possible it is this. I thought i fixed it because it looked like only the return line was leaking. I also have a leak at the fuel to injection pump bleeder which i thought I had also fixed...

I have noticed a knock in the engine on my M4500DT. This is my first tractor which I havent had for long and not used to its sounds. I have a small diesel tipper and Kubota excavator which are quieter but have the usual diesel tappet sound. The tractor has a noisy valve train sound which I...

Thanks Chanceywd, , the clutch seems to be working fine as far as gears go but I will look in to what your saying about whether its a two stage clutch. PTO lever crunches to put lever in to live PTO, the lever comes up and goes in to neutral freely and goes further in to ground PTO without...

Problem solved thanks everyone. It was indeed the hydraulic pump needed priming. I dont know how there is a procedure for these, unless a new hydraulic pump draws enough vaccum to fill the filter reservoir. Or like Dave said they are vacuumed. Other wise they are impossible to fill because of...

Thanks John, hopefully some results or at least daignosis today

Thanks Dave, I will go through these first because I have taken them all off. I thought because I did not refill the hydraulic filter canister that it could just have an airlock. But unlike the diesel fuel system bleeding does the hydraulic pump draw enough suction through the lines and filter...

Thanks GeoHorn. Its Gulf Western farmoil STOU 14W/40 recommended for use in everything apparently. I was sceptical about it especially in the engine actually, but I was going to run it through everything and then do another oil change with the rcommended oils. I cant see how a 14w/40 is...