I bought a B7200D that has been sitting for several years. I am trying to get it started but it just keeps turning over but not firing off. I drained the tank and put new diesel in it. I also bled the injectors. When i am cranking it there is white smoke coming out of the exhaust so I am confident that it is getting fuel. I checked the glow plug voltage and it was 8.5v at the glow plug on cylinder #3. What should the voltage be for my glow plugs? What is the proper way to check the plugs? Can anyone tell me a NGK number for glowplugs that will fit? What is the difference between b7100 and b7200 plugs? I see alot of plugs on ebay for the B7100 tractors.
B7200D glow plugs part numbers and testing
- Thread starter ka24deroadster
- Start date
76_Bronco
Member
Equipment
B7200 4WD w/FEL, 4' disc, 4' Brush Hog, 14" Plow, 4' Blade, JD 246 2 row Planter
I can't help you on how to test them, but the part number for the B7200 glow plug is 15951-65510. And it's not the same as the B7100.
Thank you for your reply. Part number 15951-65510 is the Kubota number. I was hoping that some one had a part number for another maker such as NGK.
Low voltage at glow plugs could be weak battery or corrosion on GP connection(s). Try cleaning all electrical connections related to GPs. Don't lose the tiny nut on each GP. Clean thoroughly and go back with a dab of antioxidant on each connection.
They operate in a series electrical connection--if one connection is bad it may affect all.
On mine, I can feel the GPs heating up.
Could be GP controller and related as your work backwards.
Please post back and advise what you find and how you proceed that we may all learn.
They operate in a series electrical connection--if one connection is bad it may affect all.
On mine, I can feel the GPs heating up.
Could be GP controller and related as your work backwards.
Please post back and advise what you find and how you proceed that we may all learn.
kubotasam
Well-known member
Equipment
B2410, B7100dt, B7500,Woods BH750,Landpride 2660RFM, Tiller, B2781 Snowblower
Not sure about a B7200 but 8.5 volts to a B7100 would be just about correct. If I remember correctly the resistor/indicator is supposed to drop the voltage down to 9 volts during preheat. If your B7200 has the little glow plug indicator coil on the dashboard then I would guess it would be about the same.
76_Bronco
Member
Equipment
B7200 4WD w/FEL, 4' disc, 4' Brush Hog, 14" Plow, 4' Blade, JD 246 2 row Planter
Go to this link >http://store.onlineautoparts.com.au...6200 B7001 B7100 B7200 B8200 D750 15951-65510 and scroll down to "Other Manufacturer X-Reference Numbers" and you will see the NGK part #
That link is for "3 Glow Pugs Kubota Diesel B5200 B6200 B7001 B7100 B7200 B8200 D750 15951-65510" but Kubota has different numbers for the b7100 and b7200. The reason I asked what the difference was is because i have seen adds like this that show the same plug being able to be used for both, and other adds list them seperately. I ordered a set of NGK Y103K plugs and should have them in a couple of days. I will compare them with the ones i have right now and try them out. I still need to do a compression check and will do that when i pull the plugs.
76_Bronco
Member
Equipment
B7200 4WD w/FEL, 4' disc, 4' Brush Hog, 14" Plow, 4' Blade, JD 246 2 row Planter
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Plug Specifications -Vehicle Battery Voltage System - 12 volt Overall Length - 68mm Glow Tip Length - 18mm
I thought it was odd that the parts manuals gave a different number for the b7100, but the specs were the same when I Googled each part number.
Plug Specifications -Vehicle Battery Voltage System - 12 volt Overall Length - 68mm Glow Tip Length - 18mm
The new plugs physically are the same as the old plugs i removed from the engine. They are also the same voltage. I put them in and it appears that they work just fine. If you crank the engine over to get fuel in it and then hold the plugs on, the engine will move slightly from the fuel lighting off. It turns out that the starting problem was not due to the plugs. When i had them out i did a compression check on the middle and rear cylinder. The front cylinder would have needed the fuel rail removed to check it. The middle cylinder had 350psi and the rear cylinder only had 250psi. At this point i decided it was not worth the work to do the front cylinder. I hoped that the low compression was due to something sticking from setting so long. My brother poured a bunch of Marvel Mystery Oil down the intake and turned the engine over by hand with the compression release open.The top of the motor was completely filled with it. I let it set for a week like this. I tried starting it and after cranking it for about 30 seconds ,with black smoke puking out of it, it fired off. The black smoke stopped(probably due to the MMO) and you can not see any smoke while it is running. I think what ever was stuck must have been freed by the oil.
76_Bronco
Member
Equipment
B7200 4WD w/FEL, 4' disc, 4' Brush Hog, 14" Plow, 4' Blade, JD 246 2 row Planter
Glad you got it figured out! And If the MMO completely fixed it, then congrats on coming out so cheap. It kinda makes you wonder how many engine's have been rebuilt when all they really needed was soaked in MMO for a week to free up the rings.
If you're still around, I'd like to ask a question about your B7200 glow plug installation. Did you have to remove the intake manifold to remove and install the new glow plugs? Thanks.......
Hi there. Was browsing Google for something related to this.. I have a d750 unsure if it's a 7200 or 7100 but anyways I was so stumped on why it wouldn't fire up but cranked and could smell fuel.. I ordered ngk y103k glow plugs for them they heated up fine when I pretested them so for the longest time I couldn't figure it out and what happened was the y103 is actually too long to seat properly into the glow plug groove so it was actually a loss of compression... I kept trying to figure out if it wasn't getting fuel or the plugs weren't working and just by fluke I saw the gap between the block and the seat on the plug... What is the correct kubota plug for this particular motor? F*** ngk!
This is weird: I have a Kubota B7200 diesel, and bought 3 NGK Y-103k 2013 plugs. They do not seat in the block, there is still a couple of threads that show below the chamfered part. The old plugs seat nicely, but the new plugs are not quite the same. The Kubota dealers I have gone to are no help. Any ideas, anyone?