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EFV-8 Club Forum / General Ford Discussion / LITTLE OR NO OIL IN VALVE CHAMBER

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Posted By Discussion Topic: LITTLE OR NO OIL IN VALVE CHAMBER -- page: 1 2 3     DONALD 08-25-2011 @ 12:19 PM reply profile send p.m. Member Posts: 12 Joined: Jan 2011 PRETTY SURE THE PLUGS ARE IN PLACE,HAD TIMING GEAR OFF TO REPLACE CAM AND THE FRONT PLUG WAS THERE.REBUILT ENGINE SUPPOSELY,HAVE A NOISE IN ENGINE WHEN GETS WARM GOES AWAY WHEN NO 7 PLUG WIRE IS REMOVED. NO NOISE TILL ENGINE GETS WARM NO NOISE AT HIGHER RPM .WAS GETTING READY TO PULL ENGINE AND NOTICED THERE WAS NO OIL IN THE VALVE GALLEY OIL PRESSUR SPRING SEEMED OK A LITTLE PRESSUR WHEN I PULLED TOP PLUG OIL PRESSURE AT IDLE ABOUT 20 LBS VARIES ABOUT 2LBS, OFF 30 LB GAUGE AT FAST IDLE NO OIL COMING OUT OF FUEP PUMP CACITY WHE RUNNING ENGINE ,, ANY IDEAS ?HOW MUCH OIL SHOULD BE IN THE VALVE TRAIL CHAMBER,DRIEDS IT OUT THE OTHER DAY WHEN ADJUSTING VALVE, STILL DRY AFTER RUNNING ENGINE 37RAGTOPMAN 08-25-2011 @ 4:42 PM reply profile send p.m. Senior Posts: 1969 Joined: Oct 2009 did you replace the cam bearing,maybe not lined up correctly ? shutting the oil supply off to cam ??? also usually if you disconnect a spark plug wire and the noise goes away, it is a rod bearing,not knowing what kind of sounds make a big difference, could you post a little more info ? my 3 cents worth 37RAGTOPMAN DONALD 08-25-2011 @ 5:15 PM reply profile send p.m. Member Posts: 12 Joined: Jan 2011 on a 59 AB NO 7 plug wire disc.noise goes away,pretty heavy noise down low i think its a rod may be loose,engine was rebuilt a few miles ago but dont know the history.Have engine out now .easier ,will take off pan in the morn and have a look see,dont have the body on so goes pretty easy.better than crawling atround on my back. supereal 08-25-2011 @ 8:49 PM reply profile send p.m. Senior Posts: 6819 Joined: Oct 2009 Check the oil distribution tube that runs the length of the valve chamber. Be sure the tube isn't blocked, and the baffle is in place. I suspect one or more oil galleries is plugged, which may have starved the rod bearing in the noisy cylinder. Only a teardown would confirm that. Old engines often have clogged oil passages. We open crankshafts to clear them, and often find lots of crud. It is also possible that the oil pump intake screen is blocked, or that the intake pipe has come loose from the pump. I wouldn't run the engine until you find the problem, or you run the risk of ruining the crankshaft. It is likely that lack of oil has caused a rod bearing to gall in the noisy cylinder. DONALD 08-26-2011 @ 1:27 PM reply profile send p.m. Member Posts: 12 Joined: Jan 2011 took off oil pan removed 7L and 3R 7 is the one where noise went away when i removed plug wire,removed rod caps @ bearing looked new,used plastigage come up with .002 book says .001-.003.where else could the noise come from?, crank was in tollerence also What other noise would go away by removing plug wire? supereal 08-26-2011 @ 5:44 PM reply profile send p.m. Senior Posts: 6819 Joined: Oct 2009 Diagnosing a noise without hearing it is somewhat akin to saying how blue is the sky. Banging is usually a rod, thudding, a main bearing. As you report lack of oil in the valve gallery, it is not unreasonable that a bearing is the source. Something is obviously amiss, and it probably will require a teardown to find it. Anything else is speculation. 37RAGTOPMAN 08-26-2011 @ 6:28 PM reply profile send p.m. Senior Posts: 1969 Joined: Oct 2009 DONALD check the wrist pins. if any play also. if worn will make a noise and the noise will lessen when the spark plug wire is disconnected, hope this helps, 37RAGTOPMAN deuce_roadster 08-26-2011 @ 8:48 PM reply profile send p.m. Member Posts: 284 Joined: Oct 2009 Any chance a crossfire from within the distrib or loom could make that particular cyl fire at the wrong time creating the knock? Did you check the other rod on that throw to see if it was loose? Are both valves, guides etc on that cyl fine? Let us know when you find the gremlin. DONALD 08-27-2011 @ 7:02 AM reply profile send p.m. Member Posts: 12 Joined: Jan 2011 Guess ill take the head off and remove piston and check for a twist in the rod and wrist pin.dist and wire loom are all in great shape.From what i hear on the ford barn there is very little oil in the valve galley,just mist and oil thats thrown up from splashing. the valve guides all seen to be ok and in place and have double checked clearence, I did chcek no 3R rod also.this engine has one large bearing per throw,is this a floating bearing?Someone said the rod bearings were individual. this is a 59 ab . the noise or small knock is only there at slow idle,at a fast idle engine was really smooth. STILL LOOKING. 37RAGTOPMAN 08-27-2011 @ 7:32 AM reply profile send p.m. Senior Posts: 1969 Joined: Oct 2009 DONALD before you pull the engine apart,!!!!! do a compression check, you said it runs smooth at higher speeds,[ does it run rough at idle? ] the noise might be a valve tap, like a tight guide or a broken valve spring,coming and going ? and at low idle it runs rough ?? sound like it could be a valve problem, more info,,, easier to figure out, hope this helps 37RAGTOPMAN This message was edited by 37RAGTOPMAN on 8-27-11 @ 7:33 AM

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