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Discussion Forum

???Spark Plugs for WD45???

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05-02-2003 04:25:48

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What spark plugs do you guys suggest for a WD45...

the guy at my local NAPA last year suggested I use some of those EZ start plugs like in a lawn mower last year and I did they ran well for a bit but they seem to really foul up quick.......

The ones I pulled where a heck of alot bigger than the EZ start kind too so It kind of has me wondering if I've been running the wrong plug

I'd really like to use autolite but I havent been able to find a recomended series

What would you suggest??

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05-02-2003 18:00:23

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 Re: ???Spark Plugs for WD45??? in reply to Craig, 05-02-2003 04:25:48  
When I first changed spark plugs on my Wd I went to Napa and got what the book said I needed when I put them in I noticed the threaded part was not as long as what came out I put them in anyway and they fouled in no time at all. I went back to Napa and showed him the difference He said what I took out could not work in Wd, and suggeste that I find out some history on the tractor. I talked to an old time mechanic and told him about the problem I was having and if he had any idea as to what was wrong. He asked me where I got the tractor and when I told him he told me he had put a D-17 head on that tractor and sold me a set of plugs that worked. Is there remote possibility that could have happened to your tractor?

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05-02-2003 15:09:54

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 Re: ???Spark Plugs for WD45??? in reply to Craig, 05-02-2003 04:25:48  
use only AC or autolite plugs. Don't use Champion plugs unless you enjoy troubleshooting ignition problems in your spare time.

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Phil Munson

05-03-2003 05:57:41

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 Re: Re: ???Spark Plugs for WD45??? in reply to acorange, 05-02-2003 15:09:54  
Here goes the Ford and Chevy thing, sorry. With over twenty engines operating on our farm, it was ALL Champion plugs, with great service; except the AC WD. It has been a few years but my recollection was AC 45s. I don't even know if that is still a good number. It certainly is absurd, but that allis would eat a set of champion plugs in no time, the ACs worked great.

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05-04-2003 05:48:44

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 Re: Re: Re: ???Spark Plugs for WD45??? in reply to Phil Munson, 05-03-2003 05:57:41  
The AC 45 was the correct number but it is no longer made. You can get an R45 (resistor type). However, over the last several years the AC plugs of the type used in the old tractors have been made in Mexico and my experience is that they don't work as well as the old ones. The Autolites work well.

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Bryan Smith

05-02-2003 13:09:14

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 Re: ???Spark Plugs for WD45??? in reply to Craig, 05-02-2003 04:25:48  
Autolite 295 for magento systems, Autolite 303 for distributor systems (on B/C/CA/WC/WD/WD45). 295 is a hotter plug - I ve seen folks run it with distributor systems too. I have 303's in my WD45.

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Steve in N.J.

05-02-2003 09:43:39

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 Re: ???Spark Plugs for WD45??? in reply to Craig, 05-02-2003 04:25:48  
Craig, We have Autolite 295's in stock all the time. If you have problems finding them locally, drop us a line, be glad to help ya out!
Steve/B&B Custom Circuits

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05-02-2003 05:21:18

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 Re: ???Spark Plugs for WD45??? in reply to Craig, 05-02-2003 04:25:48  
Use the 295's.

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