'94IDITurbo7.3
HAMMER DOWN!
I know this is probly not the best place for this thread so mods feel free to move to more appropriate place.
We have a new holland 1620 compact tractor with a I-3 cyinder diesel engine. last winter we were useing it and it started to get a lot of blow by and would hardly start and then if it did start it would run rough and smoke like a mother.
so we did a comp test and the front 2 cylinders were within spec but the back cylinder was terrible. i don't remember the numbers. so we put new rings in it and had the head machined.
We put everything back together and it was back to what we know as normal. still not that great. it has always started hard. cold starts usually take 2 glow plug cycles and warm starts take 1 cycle unless it has just been shut off. once it did start it would cough and smoke white smoke.
well early this past summer we were cutting grass and noticed it was making a lot of blow by again. did a comp check and it was 400 psi on the front 2 cyl and 120 on the back one. that check was with the engine cold. at that point we figured the block needed machining. so we left it sit. that was with 30 hrs on it since the engine work.
today we go to start it to take the loader off and we cycle the plugs twice and it fires right off. it smoked black/grey smoke and very little white. we did what we had to do and we thought for kicks we would do a comp test again with the engine warm. all 3 cyl were 400 psi. speck is 425+-50psi iirc. tommorow we will check the comp again with the engine cold.
i used a steathescope (stick of wood) to listen to the valve train and it was noisy. i then listened to the injectors. the two front ones were about the same sound. the back one though was noticably louder and more "pingy". i also listened to the block and that was quiet. it seems that our noise is coming from the valve train and/or injectors. i also listened to the injectors that send fuel out of the IP and all three of them sounded differnet and none of them sounder exactly healthy. especially cyl#3 again.
When we tore the engine down last winter the back cyl, #3, was in tough shape as far as carbon build up. the top of the piston was black with carbon and the sides of the piston were all black. the rings had to be dug out of the piston they were so bad. the other two pistons were clean.
we had the injectors pop tested at the new holland dealer and they said that they popped off fine.
The thing we don't understand is how the comp seems to have "fixed" itself.
when we first started it today it had a little to much blow by out the oil fill neck on the valve cover. as it warmed up the blowby went away and is now completely gone. what could cause this?
Does this issue sound like it is fuel system related? i have heard on here you guys say to feel the injector lines with the engine running to see if they are warm. i did this. the two front injector lines were cool. the back injector line was a little warm.
Ideas?
Sorry for the novel
Thanks
We have a new holland 1620 compact tractor with a I-3 cyinder diesel engine. last winter we were useing it and it started to get a lot of blow by and would hardly start and then if it did start it would run rough and smoke like a mother.
so we did a comp test and the front 2 cylinders were within spec but the back cylinder was terrible. i don't remember the numbers. so we put new rings in it and had the head machined.
We put everything back together and it was back to what we know as normal. still not that great. it has always started hard. cold starts usually take 2 glow plug cycles and warm starts take 1 cycle unless it has just been shut off. once it did start it would cough and smoke white smoke.
well early this past summer we were cutting grass and noticed it was making a lot of blow by again. did a comp check and it was 400 psi on the front 2 cyl and 120 on the back one. that check was with the engine cold. at that point we figured the block needed machining. so we left it sit. that was with 30 hrs on it since the engine work.
today we go to start it to take the loader off and we cycle the plugs twice and it fires right off. it smoked black/grey smoke and very little white. we did what we had to do and we thought for kicks we would do a comp test again with the engine warm. all 3 cyl were 400 psi. speck is 425+-50psi iirc. tommorow we will check the comp again with the engine cold.
i used a steathescope (stick of wood) to listen to the valve train and it was noisy. i then listened to the injectors. the two front ones were about the same sound. the back one though was noticably louder and more "pingy". i also listened to the block and that was quiet. it seems that our noise is coming from the valve train and/or injectors. i also listened to the injectors that send fuel out of the IP and all three of them sounded differnet and none of them sounder exactly healthy. especially cyl#3 again.
When we tore the engine down last winter the back cyl, #3, was in tough shape as far as carbon build up. the top of the piston was black with carbon and the sides of the piston were all black. the rings had to be dug out of the piston they were so bad. the other two pistons were clean.
we had the injectors pop tested at the new holland dealer and they said that they popped off fine.
The thing we don't understand is how the comp seems to have "fixed" itself.
when we first started it today it had a little to much blow by out the oil fill neck on the valve cover. as it warmed up the blowby went away and is now completely gone. what could cause this?
Does this issue sound like it is fuel system related? i have heard on here you guys say to feel the injector lines with the engine running to see if they are warm. i did this. the two front injector lines were cool. the back injector line was a little warm.
Ideas?
Sorry for the novel
Thanks