WD motor issue,,Opinions please!

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   I have #1 cylinder oil fowling out,,#2 is carbon fowled some,,and #3 and 4 are clean as a whistle!The plugs in 3 and 4 look like brand new.
I'm considering pulling the head and checking the valve guides in and seeing if the valve stems are worn.
It only smokes when it idles for a while, once i throttle it up, it clears up,but then I loose #1 cylinder.
Now, I don't put a lead additive in the gas,and I don't know if it's ever had hardened guides put in it, so I'm thinking that may be a place to start?
What do you gear head AC guys think? 
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LarryWC In Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 12 Sep 2009 Location: Terre Haute, In Points: 257	Post Options Post Reply Quote LarryWC In Report Post Thanks(0) Quote Reply Topic: WD motor issue,,Opinions please! Posted: 29 Nov 2009 at 9:09pm
	I have #1 cylinder oil fowling out,,#2 is carbon fowled some,,and #3 and 4 are clean as a whistle! The plugs in 3 and 4 look like brand new. I'm considering pulling the head and checking the valve guides in and seeing if the valve stems are worn. It only smokes when it idles for a while, once i throttle it up, it clears up,but then I loose #1 cylinder. Now, I don't put a lead additive in the gas,and I don't know if it's ever had hardened guides put in it, so I'm thinking that may be a place to start? What do you gear head AC guys think?
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JohnCO Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 11 Sep 2009 Location: Niwot Colo Points: 8992	Post Options Post Reply Quote JohnCO Report Post Thanks(0) Quote Reply Posted: 29 Nov 2009 at 10:14pm
	How is the compression? Could it be the rings?

LouSWPA Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 11 Sep 2009 Location: Clinton, Pa Points: 24345	Post Options Post Reply Quote LouSWPA Report Post Thanks(0) Quote Reply Posted: 29 Nov 2009 at 10:47pm
	rings or valve guides

Cal Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 14 Sep 2009 Location: East Woodstock Points: 172	Post Options Post Reply Quote Cal Report Post Thanks(0) Quote Reply Posted: 30 Nov 2009 at 7:21am
	I would take the valve cover off and see if there is any sludge near 1&2 causing the oil to drain down the valve stem. Cal in Ct.

LarryWC In Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 12 Sep 2009 Location: Terre Haute, In Points: 257	Post Options Post Reply Quote LarryWC In Report Post Thanks(0) Quote Reply Posted: 30 Nov 2009 at 7:24am
	OK,,I will check compression and also check the valve stems and see what we have here! Thanks guys!
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CTuckerNWIL Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 11 Sep 2009 Location: NW Illinois Points: 22823	Post Options Post Reply Quote CTuckerNWIL Report Post Thanks(0) Quote Reply Posted: 30 Nov 2009 at 8:34am
	What plug are you using. I used to have trouble with the CA fouling 1 plug after a few hours on new plugs. I put the next hotter plug in and never touched a plug the rest of the mowing season. The CA sat for 10 years before I started using it. The more I used it, the better it ran. The CA had ring problems so if your's is valve guides, hotter plugs might not do as much good.
	http://www.ae-ta.com Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF

alan_IA Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 16 Oct 2009 Points: 6	Post Options Post Reply Quote alan_IA Report Post Thanks(0) Quote Reply Posted: 30 Nov 2009 at 9:18am
	sounds like what I had, turned out #1 had a scored cylinder wall. Cost less to replace motor than rebuild. I now have a WD45 motor in my WD. hope your problem is not that bad.

Gerald J. Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 12 Sep 2009 Location: Hamilton Co, IA Points: 5636	Post Options Post Reply Quote Gerald J. Report Post Thanks(0) Quote Reply Posted: 30 Nov 2009 at 9:45am
	You don't use hardened guides, its hardened seats for the valves with no lead fuel. You aren't working it hard enough to need the hard seats. When to adjacent cylinders have similar problems its often the head gasket is blown between them, and likely in this case adding an oil passage that's leaking more to #1. Valve guides tend to leak more with a high manifold vacuum and the highest manifold vacuum is while the engine is coming down in speed from running fast at the time the throttle is closed. So if you goose it, then close the throttle, and get a puff of blue smoke as it gets down to idle speed, that's valve guides, specifically intake valve guides. Seals can do wonders. Guides can do wonders, but then you have to do a complete valve job cutting the seats to be concentric with the new valve guides. And probably break for new valves too. It could a rocker arm problem where #1 exhaust isn't opening much if at all, but I bet on the head gasket. Adding a so called lead additive to the gas gets you more rapidly fowled plugs and a thinner wallet, that vendor more profit, does nothing for engine performance or longevity. Gerald J.

LarryWC In Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 12 Sep 2009 Location: Terre Haute, In Points: 257	Post Options Post Reply Quote LarryWC In Report Post Thanks(0) Quote Reply Posted: 30 Nov 2009 at 9:58am
	Good points Gerald, I'm not as familiar with these engines as others so I appreciate the input on this! wouldn't the compression test also indicate a possible head gasket issue?
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Coke-in-MN Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Sep 2009 Location: Afton MN Points: 41720	Post Options Post Reply Quote Coke-in-MN Report Post Thanks(0) Quote Reply Posted: 30 Nov 2009 at 10:15am
	Gerald covered most things well . might also do a leak down test with compressed air but if oil burning is the problem from guides this will not show up. Fouled plugs can also be from leaks if the plug is burnt.
	Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something. "Challenges are what make life interesting; overcoming them is what makes life meaningful."

LarryWC In Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 12 Sep 2009 Location: Terre Haute, In Points: 257	Post Options Post Reply Quote LarryWC In Report Post Thanks(0) Quote Reply Posted: 30 Nov 2009 at 3:04pm
	OK,,,,the verdict is in! Gerald,,,#1's exhaust valve screw had backed it's self off and was barely opening the valve! #2 wasn't much better, plus, I had a spark plug that had a small crack along the side of the electrode and was firing down in the plug and not at the point where it should! after setting the clearance back on the two valves and a new set of plugs,,I'm pullin' wheelies now!!,,,well,,,not really,,but she's runnin' real darn good now!
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LarryWC In Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 12 Sep 2009 Location: Terre Haute, In Points: 257	Post Options Post Reply Quote LarryWC In Report Post Thanks(0) Quote Reply Posted: 30 Nov 2009 at 3:06pm
	Oh yeah,,,and I STILL don't know for sure where the oil was coming from,,but I ran her for quite a while and never saw a hint of it! I'll keep an eye on that though.
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