Coils usually work or don't work.

I'd look at the mechanics of it. Worn coil sleeve ? Worn pivot arm on the kicker or worn kicker.

Gap your leaf blade switches good too.

Turn the game off. Remove the plastic over the sling shot kicker and leaf blade switches. Pull on the rubber ring around the posts, so you have equal pressure on all sides, not tight on the kicker/leaf blade switch side. The leaf blade switches - front long one should be resting on the rubber ring, not pushing it or away from it. Shorter rear one should be close enough so the slightest ball hit triggers it, yet vibration doesn't. There are two leaf blade switches, one each side of the kicker. When bending forward or backward, get as close to the fiberboard spacers as you can.

LTG : )

Coils are just lots of copper wire, either they work or they don't , not something in between.

There is probably some binding/friction going on inside the coil sleeve. Change coil sleeve, clean the metal plunger inside it, check that the metal end isn't swamped up. Take apart the kicker arm and clean, change the metal spacer there if it's worn.

It looks like this link is out of place.

IMG_8535 (resized).png

Link is broken, replace it and all should be good again.

Sometimes it’s easiest to buy a new plunger and link assembly. The pin that holds the link can be tricky. And the new plunger will be fresh.

IMG_8536 (resized).png

The coil isn't your problem. Something in the mechanical portion of the plunger/link/sleeve or even with the alignment of the bracket is where your issue lie. Like others have said coils work or don't.

Like they said -

You can see the right side arm barely has any travel at all, it's not even moving the rubber.

Pop the hood again and compare it to the left one, you'll recognize the broken link.

In the future, when you have a problem with a mech and there are 2 or more of them on the game (slings/flippers/pops etc), compare one to the other and many times you'll see the problem. Learning curve!

Guess again.

Post #5 mslow caught it.

LTG : )

FYI the plunger and link pictured above is for a flipper, not a sling

Here is the correct plunger and link :

https://www.pinballlife.com/slingshotballshooter-plunger-and-link-2-plunger.html

Your game uses an A5103

LTG : )

The part you're replacing is the round shaft INSIDE that coil, that's the plunger - the "link" attaches to the flat metal part by removing that clip, sliding the round hole onto it then replacing the clip.

Look at your other slingshot, you'll get it...........

Red arrows point to part you remove and are replacing.

Light blue arrow points to clip you pull off and save when you put the new plunger on that post.

Light green arrow points to spring you save.

The four screws holding the coil bracket, you'll need to remove them to remove the coil bracket/plunger so you can put the new plunger on. Put the new plunger/link on the shaft, replace the clip. Then slide the spring over the plunger and stick the coil/bracket back on and replace the four screws.

Study the other side to be sure you get it right.

LTG : )

Pinside_forum_7598283_0 (resized).png

This is how the plunger and plastic link attaches to the kicker arm.

LTG : )

b-9463 (resized).jpg

We were ALL noobies once.

Welcome to the hobby!

And don't forget to help others in the future when you can.

Helps keep pinball strong.

LTG : )