Ford 3600 running on 2 cylinders.

[Spotty Dog]

As title. Turn it over on the starter with the stop pulled out and there is one cylinder 'chuffing' out of the exhaust . What could this be ? I thought it might be an exhaust valve with chunk out of it?? Took the rocker cover off and all the valves are closing ok . I'm going to take the head off tomorrow unless anyone thinks otherwise.

 

[Chuckie]

Head gasket blown between 2 cylinders?

 

[Daveh]

Beat me to it, does sound like a valve though.

 

[Mursal]

But if the gasket was gone between two cylinder, that would leave one good one? Might be worth loosening the injectors pipes one at a time, when running to see which cylinders are working? Go from there ............

Is there clearance in the valves, you haven't a tight tappet?
Or an injector that had enough?
I wouldn't but much weight on the noise when cranking to be honest. Don't go stripping for fun, what you going to do with the head on the ground and still no cause?
Good luck with it

 

[Ray]

It really does sound like a burnt or badly seating exhaust valve, but I would check and reset valve clearances before you rip head off, you never know it may just be that simple. Inlet = 0.015in Exhaust = 0.018in

 

[Spotty Dog]

There is around 15 - 20 thou clearance on all the valves. I have done the slackening off of the injectors thing. Slackening number two doesn't do much so looking like problem with that cylinder.
No2 closing coincides with the blowing noise in the exhaust.
Wish i had a compression tester

 

[Kevtherev]

Head off is a pretty simple job on one of them and a gasket is cheap.
Probably burnt or cracked between cylinders or a valve.

 

[multi power]

I had similar with my Massey 6 5 took head off n to repair man. Think he said burnt valve or something like that. He said he never seen a head in such a bad state.

 

[Mursal]

Unless you just want to swap an injector to see if the problem moves? Probably hard to get them shifted.
Well after that I suppose its head off then so ...................
None of your mates got a gauge welded to an old injector to do a rough compression test? Or cylinder leakage test with compressed air?

 

[Ray]

As you've already checked valve clearances, it's defiantly head off time IMO. No good messing with anything else. Once you remove head (which won't take long).. all will be revealed... Chuffing indicates compression loss, exhaust note indicates where from..

 

[Spotty Dog]

Nice sunday job. By the way its got yellow valve springs, is that normal or has the engine been apart before ? I haven't owned it long.

 

[Spotty Dog]

Well, took the head off today. Cylinders 2 & 3 were dry with carbon caked around the valves and number 1 was wet with diesel so that one probably has been losing compression. Haven't taken the valves out, i'm just going to take the whole head to my local engine re-builders tomorrow.
Next on the list is diesel tank off (its leaking) and split it to fit new clutch plate(s).

 

[Spotty Dog]

Update, got cylinder head back today. Problem was burnt exhaust valves. No1 was the worst with huge pits all around the face, the other two weren't as bad but all three have been replaced.

 

[Spotty Dog]

What torque should i set the cylinder head bolts on this engine please ?

 

[Landy Nick]

What torque should i set the cylinder head bolts on this engine please ?

110 ft/lb going by this link.

http://agspares.co.nz/uploads/pdfs/Ford Tractor Engine Specs.pdf

 

[Spotty Dog]

Great thanks.