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Two igniters on stove top arcing downwards, not igniting gas

I have a Jenn Air Range/Oven. On the left side, everything is working correctly. Igniters arc from the igniter tip to the burner cap, which ignites the gas every time. But on the right side the two igniters spark very brightly but do not ignite the gas. I cleaned the heck out of the burner plates INCLUDING that tiny little hole/notch where the gas comes through for the igniter. A LOT! It is VERY clean. Still no ignition. Upon closer inspection, the spark travels from the igniter tip DOWNWARDS along the side of the ceramic instead of UP to the burner cap (like it does on the functional side). The gas does not ignite.

To provide some “anatomy:” starting at the top - I have the burner cap, then the burner plate, which sits on a stainless steel pan. Under that is the metal framework which holds the igniter, which I will call “burner frame.”

-cap-/-burner plate-/-pan-/-burner frame-

I attempted to trouble shoot this. The igniters on the left side (the working side) sit 2.5 mm above the metal burner plate - which is close enough to the burner cap to arc to it correctly. But the igniters on the right (broken side) sit only 1.5 mm above the burner plate - which is apparently too far to arc to the cap. You can see how this means the left side (working) sits closer to the cap, and it arcs to the cap. Now, if I REMOVE the stainless steel pan that the burner plate sits on, the igniter now sits higher above the burner plate, and measures 3.3 mm above the burner, and will now arc to the burner cap correctly.

But I can’t have a stovetop with all of its innards exposed! I need to put the pan back in there. No matter what I do, I can’t seem to adjust the igniter height in any way at all. I need that extra mm or two. It needs to be higher I think. I can’t bend the frame that holds the igniter either, it is very robust and will not bend.

Does anyone have any idea how to fix this issue?

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Hi,

What is the model number of the oven/cooktop?

Have you cleaned the igniters as well, (any oxidization on the ceramic?), you never said.

For a spark to travel along the ceramic means there is less resistance in the ceramic than the air gap to jump across

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Best I can tell, it is a JDS8860BDP. The sticker is worn off and it isn’t written anywhere in the manual.

I don’t have a warming drawer on the bottom though.

Looks identical to this one without the drawer on the bottom. The bottom is just a panel that hides all the gas lines and electrical,

https://www.canadianappliance.ca/product...

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JDS9865BDP might be a closer match. That does not have a warming drawer on the bottom but otherwise the outward appearance looks identical.

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Yes, I believe that the JDS9865BDP is correct as this parts diagram looks accurate based upon what I am seeing.

https://www.appliancepartspros.com/gas-c...

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I cleaned the igniters as well. They appear clean. The ceramic is almost completely clean, maybe a tiny spot on it that doesn't rub off easily and there don't appear to be any cracks in the ceramic either.

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Alright - I fixed it! I needed to get the igniter up about 1.5 mm higher than it was sitting to get it to arc to the burner cap.

So what I did was I took the part’s called “Holder Orifice” (the aforementioned support for the burner plate and holder of the igniter) and I used a bench grinder and just ground down the little ear where it holds the igniter. Before grinding, it is 8.6 mm thick, so plenty of metal. I made each one about 1.8 mm thinner and voila! the igniters now sat higher and arc perfectly to the burner cap.

Lo and behold! As soon as the gas comes on, it immediately ignites now!

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Hi,

The black spot on the igniter (only the one?) is a bit of a concern. Is it on the same side as the spark seems to travel down on? Wondering if it may be the sleeve of the igniter through the ceramic, a burn hole perhaps.

Looking at the Parts List JDS9865BDP there are two different length igniters shown. See p.4 part # 2 & 3. #2, part #74006072 and #3, part #74006073 (supplier examples only).

The link you posted showing an image of the oven is not working but I assume that there are 4 burners and that the longer igniters should be the same length on both sides as are the shorter ones, is this correct? The parts list only shows two burners but you said the “… right side the two igniters spark very brightly….”.

Looking at the wiring diagram in this link there is only one spark module that supplies all the burners so even though you see a bright spark it may not be as powerful as the one on the other side. Perhaps you could swap one of the “faulty” igniters over to the other side and see if the problem remains with the position or moves with the igniter.

If the igniter is faulty, search online using the part number only, to get results for suppliers that suit you best.

If the problem remains with the position it may be the spark module (part # 74004283)

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So the range is set up as follows:

The left side is actually a removable double burner "cartridge." The manufacturer calls it a "Sealed Gas Cartridge" (Model JGA8150ADB or Model JGA9150ADP) which is like its own separate modular double burner which contains its own burner plates, gas tubing, and igniter with wires. It pulls completely out of the range and is completely enclosed in stainless steel. I did take it apart to see what was inside and it looks different to what is under the non-functioning side. It doesn't have the metal frame/support with the igniters. What I mean to say is that I cannot switch the igniters from the left to the right side because they left front/back is different from right front/back. Right front and right back seem identical.

The right side (broken side) is more traditionally set up. I remove that stainless steel pan and below is the normal "stuff" you would expect to see (Part AP6021035 for Right back burner and Part AP6021033 for Right Front Burner).

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@Pete Allen

I just thought that given the igniters shown in the links I posted are individual components they could be removed and replaced to the other side but obviously not. Surely you wouldn't be expected to replace a complete cartridge due to a faulty igniter would you?

Bit difficult maybe but looking at the wiring perhaps you can change the wiring over at the spark module.

If you decide to do this, shut off the gas before trying the igniters to see if they ignite OK with the appropriate control and then turn on the gas to see if the burners light. At least you may know whether it is the spark module or not.

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I agree with you.

I did figure it out though. I was able to raise the height of the igniters on the non-functional side by grinding down the bracket that holds it in place. It is quite robust, so it certainly didn't lose any noticeable integrity or anything. I posted my solution in the answer below. It ignites immediately now.

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@Pete Allen

If it worked in the past OK it seems unusual that you had to do this. It seems almost as if the igniters have worn down somehow or have lost effective spark at the initial distance.

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i have this same issue with this same model of gas stove. your solution seems beyond what tools i have available tho. wondering if i put tin foil in at the right places if it would attract the spark upwards

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