Sounds like you might have an air leak. Check for leaks between Carb and Manifold and between manifold runners and head

Today I pulled everything out and off. Scrubbed plugs like a trooper, made sure gap was correct - they were fouled really badly. I checked all leads and connections and dissy cap/coil connections.

Got it running back to normal standard. So I guess just the clean and thorough job.

But my problem still exists - after a few weeks the plugs will be fouled again and I'll probably repeat the process. Hence the reason why I want to try on smaller jets.

I'll do that later on this month, and that way I'll know anything that happens isn't situational to the plugs, leads etc.

Heard a local opinion that it could be the fuel. I live in a country town and fuel apparently sits for a while before being used...and my escort has special needs.

When I was driving it around in Brissy a year or two back I never had this particular problem with this carbie.

Maybe a dose of octane in the fuel tank? Just to see? The only servo in town is SHELL and I always fill up with premium.

By the way this means that it had nothing to do with plunger, as I feared because I mucked around with it...

Thanks again, I'll let you know.

Shell fuel??

Well there's your problem, i only use BP or Caltex even in the dyno car as Shell just runs too dirty and carbons everything up

Had a similiar problem with my car and assumed it was Carburettor and Timing / Ignition related, Definately check your Spark Plugs for Carbon Build up, The unleaded fuel when running rich seems to burn with considerable amount of soot and soon deposits and insulates the arcing point of the Spark Plug, and can even get to the point that the car won't start. Clean and regap your plugs and possibly change to a hotter range plug - Worked for me

The SHELL fuel hey - Well unfortunately for me I have no other option because there is no other servo for about 220km...country service you see.

This makes a lot of sense - because it something that happens over about 3 weeks of daily driving.

Okay, next step - HOTTER plugs. Can someone get me an NGK number for a hotter plug? I tried this earlier in the year, and I think I went backwards!

The plugs I'm running at the moment are NGK NF5S or something. But I think it's the number that counts right? SO - do I want to go to a 4 or a 6? What's 'hotter' to burn off all this carbon?

Thanks for setting me straight again so far.

I still plan to lean it through smaller jets in a month anyway, so this may help a bit I hope, but for now it's going to be cleaning plugs each weekend! Joy. Also, can anyone recommend the best way to blast a plug? I've used carbie cleaner and it does a great job. anything else?

Anyone think that an octane supplement will help it at all?

Hotter = smaller number (I'm 90% sure)

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Originally posted by jorgan92

Hotter = smaller number (I'm 90% sure)

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Bingo

Shouldn't a pinto be running NGK AP6 plugs??


You can try running a GOOD quality fuel system treatment, i found that the LiquiMoly products work VERY VERY well haha use most of them on my cars and the wifes Fiesta aswell
The octane treatment actually gained 27kw in my dyno car when i used it too, which is prob the greatest gain i've ever seen in a bottle