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Spark plug woes, 1 stuck and preferred replacements?

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drooartz

drooartz

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I'm finally getting caught up on maintenance with Maggie my Morris Minor (also known as the 4-door Sprite). 1275 engine, so Spridget-adjacent. I've not checked the plugs in a few years to be honest, so went to pull them and have a look. 1,2, and 4 came out easily. Gaps were a bit wide and they looked like the pics below. Thoughts?

Also, any preferred replacements? My notes say Champion RN9YC or NGK BP6ES for a 1275, but it's been a while. The ones in the car now are Bosch, and I have no notes on what they are.

My other problem is that plug #3 won't come out. I've seen some advice on getting the engine hot first (I was working on a cold engine) and that expansion might help. I am trying to do some PB-Blaster soak as I can.

plug1.jpeg



plug2.jpeg
 
Hi Drew - when I had a stuck plug on my 1958 Rambler, I used the "50/50 acetone/PSF" fluid technique.


(note - the photo shows PSF, but the article says ATF)

Ran engine to heat the head, then shut off. Mixed 50/50% acetone and power steering fluid. Filled the recess around the plug head with the mixture. Then let it sit overnight, so the mixture gradually works its way down the threads.

Next morning, the plug screwed out normally.

Give it a shot - let us know how it goes.
Tom M.
 
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It works better than any store bought product I've ever seen! We used to call it Panther "P". Follow Toms instructions on warming the engine up if possible before. PJ
 
Thanks for the ideas. I’ve heard of that mixture, will have to make a quick run to the parts store later to gather up the mixings. Will give it a try later this week.

My grandmother used to call WD-40 “weasel p***” :LOL:
 
Took a quick break from work and picked up a set of Champion plugs and some PSF. Progress
 
Round 1 started. Warmed the car up with a 30min drive, and applied some PSF/Acetone. Unfortunately with the 1275 head there is no real well to fill up, but I put as much in as I could and I'll hit it again before I go to bed.
 
And success!

Went out a couple times over the evening to add more weasel p***, and the last time I gave it a quick try -- motion! So undo a little, more juice, little more, more juice, and out!

New plugs are gapped and in and the car started up. Will run it longer tomorrow to make sure all is well.
 
Glad you got it out Drew. Old formulas work pretty well at times! PJ(y)
 
Drew - success! Really glad to hear the magic formula worked for you too.

Warm up that engine and take a drive up to Bear Lake. If I recall, Bear Lake and Rt 89 Garden City to Logan offer some great views and twisty driving.

Tom M.
 
Drew, Do you coat the threads with anything, such as anti-seize? Everything I own has thin film of anti-seize on the spark plug threads to prevent galling in Aluminum heads and locking up in cast iron. PJ
 
I'm actually heading over to Steamboat Springs on Saturday with my club friends. Going to be fun.

I've not used anti-seize before on plugs, but that certainly makes sense. Any specific type I should look for?
 
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