Another range ignitor problem

The ignitor on one of the burners has slowly stopped working to the point where I must use a match. The thing that seems different from other similar issues is that once lit I can see the ignitor spark when I activate the knob. Similarly once the overall burner is sufficiently hot I can turn it off an restart it with the ignitor. I know the ignitor is causing it to start because I see the spark. But once cooled down the ignitor no longer works. What about the connection would cause this? I've cleaned the metal tip and ensured no buildup. Could a connection or the ignitor be "weak". Can't figure out exactly why the heat helps.

 

Welcome to the gas appliance forum.

On many ranges there is a replaceable porcelain piece that is called the spark electrode.
They can crack and cause erratic spark operation.

If you leave the make and model number for your range I could research it further for you.

 

It's a Delonghi which I think is distributed in the USA by EurochefUSA. They were the ones who I needed to contact when I had to find a servicer last year. On their website it's the double oven 5 burner gas range. Looks like the branding changed and now it's called a "Verona". But it's the exact same thing.

The ignitors are white porcelain about an inch tall and a little thicker than 1/8" in diameter with a metal tip on top. Would a crack be obvious or would even a hairline be a problem?

Let me know if you need me to be more precise about the model. Thanks much.

 

A crack may not be obvious and yes a hairline crack allowing moisture in could be a problem.

It looks like you need to contact Eurochef for parts.