Morris Minor Owners Club

I have 8 Unipart GSP130 plugs, I think they are suitable for a 1098cc Minor, I would like to know if I’m correct, please.

Well they're equivalent to a Champion N5C, so I don't see why not...
https://www.sparkplug-crossreference.co ... art/GSP130

Great many thanks for your quick reply ! I tried to start the van today, battery fully charged, I did keep spinning it over for a while with no luck. Thinking the plugs were now wet, I removed them, cleared the cylinders, and fitted those GSP130 plugs.
Again it turned over fast but didn’t start. A few spins later it fired ! I was almost at the stage of changing the petrol as it’s been standing for so long. However the fact that it is now running, I think I can conclude the fuel is still viable, do you think I can assume this ?

I think you can conclude that the fuel will burn with some reluctance! If there isn't much in the tank I'd go and fill up with fresh fuel assuming of course that the van is not going to be standing idle again.

Stephen

Yes I need to add some, it looks like the tank is near half full though.

The problem with fuel going off over the short term (a few months) is mainly the loss of the most volatile fractions of the fuel. These not only evaporate more readily than the heavier fractions of the fuel but they also ignite more easily and so losing these bits makes it more difficult to start the car. I presume that once the engine is running it should be OK especially when fully up to temperature. I hadn't realised until recently that petrol sold in petrol stations varies according to the time of year when it was purchased. In Winter the mixture is more volatile (evaporates more readily) for easier starting in the cold. In Summer, less volatile to reduce the risk of fuel vaporisation in hot weather. So if you have fuel in the car that you bought last Summer you have two issues, old fuel and Summer fuel mixture.

If you're worried about it you could drain all of the old fuel and then add the old fuel at say 10% to each new tank. Personally I'd just fill up the tank with fresh petrol and get driving as messing about with fuel is dangerous!

Stephen

Thanks Stephen, I’ll give it some thought, in some ways I would prefer to drain the tank, and as you suggest, add a small amount to a refill. Although I’m reluctant to mess about. Something to decide.

I filled Basil up mid August last year, I know this because I use an Esso Card and can check the receipts.
My nearest garage is an Esso, and it's not worth driving out of my way just to try and get a bit cheaper, when the Card saves me 4p/Ltr anyway.
There's still about 1/3 tank in there and I've started him a couple of times this year so far, just to see if he will, without any problem at all.
Which has really surprised me.
Once I've got the seats back in, I'll consider where to make a run for the petrol station or go and get some in a can...

I’d say you’ll be ok, I filled up way earlier than August

les wrote: ↑Mon Mar 03, 2025 8:41 pm I’d say you’ll be ok, I filled up way earlier than August