New Holland Boomer 20 miss

[melmark]

By the way white smoke on start and rough idle usually means there's air in the fuel injection system. Often this happens after a fuel filter change and the system is not bled completely. That was my first thought, either not bled properly or an air leak from the filter not installed properly.

If it was not bled properly after the fuel filter change would it push the air out after some operation or would the problem persist? I could bleed the system as described in the manual. It has been a while since the filter was changed and the problem has remained consistent since then. If there was air in the system does it make sense that it would "clear up" and run fine after 3 or 4 seconds? Not debating...just asking, trying to learn

Thank-you for the response guys

Mark

 

[Don H]

If there is air in the system it either won't start or will start and run rough with white smoke until the air is gone. The air should be gone after a minute or less of operation. Unless you have a leak then it should be OK after the initial start up.

I have heard of loose filters causing persistent air leak problems. I would think that would also cause a noticeable fuel leak, but maybe not if it sits a long time between uses. I have seen spin on type filters develop pin holes in the casing causing air leaks. In that case the pin holes were caused by a partially blocked filter flexing the case under acceleration creating small stress cracks. That was on a B series Cummins.

 

[flingwing1969]

If there is air in the system it either won't start or will start and run rough with white smoke until the air is gone. The air should be gone after a minute or less of operation. Unless you have a leak then it should be OK after the initial start up.

I have heard of loose filters causing persistent air leak problems. I would think that would also cause a noticeable fuel leak, but maybe not if it sits a long time between uses. I have seen spin on type filters develop pin holes in the casing causing air leaks. In that case the pin holes were caused by a partially blocked filter flexing the case under acceleration creating small stress cracks. That was on a B series Cummins.

Something like this one - not a New Holland but an LS (Boomer). This is my LS 3038 with 17 hrs on the clock, checking for air leaks in the fuel system this week. Tired of being a mosquito sprayer.

 

[GManBart]

Something like this one - not a New Holland but an LS (Boomer). This is my LS 3038 with 17 hrs on the clock, checking for air leaks in the fuel system this week. Tired of being a mosquito sprayer.

How cold was it when you took that video?

You can try cycling the glow plugs a second time to see if it makes a difference (it usually does when it's colder).

 

[flingwing1969]

How cold was it when you took that video?

You can try cycling the glow plugs a second time to see if it makes a difference (it usually does when it's colder).

Thanks. 60 degrees and I've tried cycling the glow plugs up to four times on a cold start with no noticeable difference.

 

[Don H]

Then I'd guess you have an air leak in the system somewhere. Put a wrench on all injector lines and check to make sure they're snug. Then check the fuel filter and fuel lines. A tiny leak in a fuel line will allow fuel to syphon back in to the tank and let air in the line. You might not even see fuel drips from leaking. Does this happen every time you start or only during the first start of the day?

 

[flingwing1969]

Then I'd guess you have an air leak in the system somewhere. Put a wrench on all injector lines and check to make sure they're snug. Then check the fuel filter and fuel lines. A tiny leak in a fuel line will allow fuel to syphon back in to the tank and let air in the line. You might not even see fuel drips from leaking. Does this happen every time you start or only during the first start of the day?

Only the first start of the day, especially if it's been sitting a couple of days or more. Must be a tiny leak as it runs fine once the first smoky start is over. There is no throttle response during first start, the increase in RPM shown in the video is just the tractor doing it's thing, I did not touch the throttle.

 

[Don H]

You have air leaking into the fuel system. Could be something as simple as the bleeder not closed tight, a bad O ring, crack in a fuel line, pin hole in a spin on fuel filter, bowl not on tight or bad O ring in a fuel bowl/filter etc. I'd look real hard at everything the dealer touched when servicing.

 

[flingwing1969]

You have air leaking into the fuel system. Could be something as simple as the bleeder not closed tight, a bad O ring, crack in a fuel line, pin hole in a spin on fuel filter, bowl not on tight or bad O ring in a fuel bowl/filter etc. I'd look real hard at everything the dealer touched when servicing.

Thanks again. I just heard from the dealer and he agrees that it is likely an air leak - wants me to bring it in. Before I drive the distance down mountain roads, I'll give it the once over myself - not my first rodeo.

 

[skyhook]

Hello, When I purchased my boomer20 in August of this year it was my first tractor and first exposure to a diesel. I have been very happy with the tractor and as of October I have logged 50 hours. After the 50 hour maint. (which was done by the dealership) I have noticed that the tractor has a miss when I first start it. The problem showed up shortly after the maint. I never had a miss before the filter change but it was warmer weather then as well. A few weeks ago I called the dealership and described the problem to them. They said that is normal and nothing to worry about. I just wanted to check here and see what you folks thought.

* service done at 50 hours was to change all filters
* never had a miss before service
* Tractor starts well and runs rough for about 4 or 5 seconds then clears up and runs perfect.
* I always use glow plugs to warm engine b4 starting, the weather here has been in the 20's and 30's
* I have added power service additive to the fuel and have seen no improvement.

I would appreciate any thoughts from experienced users.

Thank-you
Mark

Sounds normal to me too, do you have a block heater, if you do, plug her in for an hour or two when it cold, you should see a difference.