glow plugs

Topic: glow plugs (Read 725 times) previous topic - next topic

glow plugs

February 07, 2022, 05:30:09 pm

I need 2 glow plugs and the number on mine is NKG Y7200 which may be hard to get
and NGK YE01 is a number I wrote down from someone on the forum. I can get the
YE01 locally do they work on the the Kubota

Re: glow plugs

Reply #1 – February 07, 2022, 05:37:29 pm

I'd contact NGK directly and ask them, they dont show up on there web site
Ignition Parts - NGK Spark Plugs

Re: glow plugs

Reply #2 – February 07, 2022, 06:37:46 pm

Peter, you probably read it wrong. I think this is what you want.

NGK Glow Plug Y-720U1 (5392)

Re: glow plugs

Reply #3 – February 07, 2022, 07:15:49 pm

The other number on mine is 9833. I ordered ye01 and I will see if it will work.
The engine has been starting at - 8 c. It has been a little rough in starting so
that is why I checked the glow plugs. I expective one gone not two so it start
good.

Re: glow plugs

Reply #4 – February 07, 2022, 07:18:07 pm

Chuck the number you gave me looks like what I have. Thanks

Re: glow plugs

Reply #5 – February 10, 2022, 01:10:12 pm

Just phoned NGK and the number on my glow plug is OEM and they can't cross it.
I am off to see what I have ordered and if that isn't right I will try the number Chuck
gave me.

Re: glow plugs

Reply #6 – February 10, 2022, 01:14:21 pm

Peter,

What diesel powers your generator?

Very likely a known small Japanese diesel. Go to one of their dealers for that brand engine. Likely used in tractors, marine applications, etc.

Many are Kubota or Isuzu.

Re: glow plugs

Reply #7 – February 10, 2022, 09:58:49 pm

Just got back from picking up 3 new glow plugs, thanks Chuck those numbers work.

Re: glow plugs

Reply #8 – February 11, 2022, 07:15:25 pm

New glow plugs are in and the engine starts imiediatly. I replaced them all.

Re: glow plugs

Reply #9 – February 11, 2022, 08:01:23 pm

Quote from: oldguy – February 11, 2022, 07:15:25 pm

New glow plugs are in. I replaced them all.

Peter,

This is interesting to me because, as far as I can tell, I do not have glow plugs at all. I have a '99 U320 which is only a few build numbers later than yours. And my generator has the (same) Isuzu diesel engine. .....odd....

Richard

Re: glow plugs

Reply #10 – February 11, 2022, 08:50:35 pm

Very easy to test your glow plugs. Just follow the instructions here: Glow plug control module – expert information | Champion

Pierce

Re: glow plugs

Reply #11 – February 11, 2022, 09:15:30 pm

You have to look for them. They are in behind the injectors. Do you have about a ten
second delay after you push the start switch, if you do you have glow plugs.

Re: glow plugs

Reply #12 – February 11, 2022, 09:32:19 pm

Thanks, I will look more closely in the morning.

Re: glow plugs

Reply #13 – February 12, 2022, 12:14:37 am

Direct injection like our Detroits, Cummins and CATs don't need glow plugs and because they are direct injection, they are about 5% more efficient than indirect injection diesels. The air is compressed 15 to 19 times in the cylinder and is hot enough so the diesel explodes when it's injected but the block or air may need to be heated in colder weather so the air reaches a high enough temperature when compressed. They pay the price with more "diesel knock." With indirect injection, the initial combustion takes place in a "pre-combustion chamber" located in the cylinder head. The compression ration of the indirect injection engine is a bit higher as the compressed air loses some heat as it has to force it's way through small holes in the part of the pre-combustion chamber that sticks down from the cylinder head into the cylinder. So, the injection sprays the diesel into the chamber but since it's cooler, it needs the glow plug to ignite the diesel for a few seconds until the compression temperature comes up a bit. The timer keeps the glow plug glowing for a certain amount of seconds, either pre-determined or with a timer connected to a temperature sensor with the glow plug on for a longer period in cold weather and shorter in warmer weather.

So, the indirect diesel loses a little in efficiency but since the combustion is slower as the gases must squeeze past the holes in the pre-combustion chamber, this type of diesel makes much less diesel clatter and is much more acceptable to spin a generator in an RV.

Pierce

Re: glow plugs

Reply #14 – February 12, 2022, 12:31:01 am

Some of the old Cat engines used glow plugs and I had to start a D8 sideboom at
-30 F. I held the glow plugs on for 2 minutes using my watch as I only wanted to try once
at starting it. It fired right up. The rest of the Cats I had to start that morning had pup
engines. The Tech generators are timed to fire up at 10 seconds. When it gets down to
around 0 F the glow plugs need to be cycle so they are on about 18 second be for letting
the started engage. If it was -30 I would cycle glow plug 3 times and hopefully I'm not
where it is that cold.

Re: glow plugs

Reply #15 – February 12, 2022, 01:04:17 am

I hated those donkey motors on the old Cats, had a D8 with plugs that beast would start in sub zero when those without wouldn't.
My 3208 has plugs and I've used them more than once, 30 seconds on the plugs then 30 seconds on the starter till it chugs.

Re: glow plugs

Reply #16 – February 12, 2022, 10:27:52 am

Norwegian SABB boat diesels were direct injection but had glow plugs that were heated with a blow torch.

I had old D8 and D4 CATs with rope start gasoline pony motors. I remember how many times I had to pull the rope, rewind it and pull again. Once it started, I ran it for several minutes before I would start the diesel. There is a local story that a D8 would not start so the owner used ether quite a few times trying to get it to fire. There was a crankcase explosion that blew a chunk of the block off hitting him in the head and killing him.

Couple of sick stories about split rims coming apart when being filled but not for breakfast time.

Pierce

Re: glow plugs

Reply #17 – February 12, 2022, 04:50:15 pm

I never seen a 3208 cat with glow plugs. I find with glow plugs the engine should
start immediately and if they don't they are bad or they haven't been turn on long
enough. I was lucky on the 30 below job all the pup engines had 12 volt starters.
I have started Cat pup motors with the crank at the front of the cat and then the
newer ones had the crank come up through the hood.

Re: glow plugs

Reply #18 – February 12, 2022, 07:32:12 pm

Well I wonder what it is that I'm heating up ? Better check when the weather breaks.

Re: glow plugs

Reply #19 – February 12, 2022, 09:06:08 pm

Thought we were talking about glow plugs in the generator, with the main engines as an add-on.

Pierce

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