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Old 10-05-2012, 01:49 PM   #1 (permalink)
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nickmarieke wants to know Dino or Syn?
Shovelhead burning oil


I purchased a FXEF shovel from 1979.

Some info:

The engine had a little service, they changed the piston rings and gaskets the rest was all oke, the seller sold it before he had any running in with the new rings, and after contacting the seller with this problem he said he had not any oil burning before the service.
I trust the seller, because he is an old friend.

The engine is smoking only on the rear cylinder and with coming of the throttle, not smoking on acceleration, so i thought it were the guides, tonight i removed the heads to replace the guides by a specialist now it comes,
by removing the rear head the head gasket seems to be blown by the return oil hole, can anybody confirm that maybe this is just the problem?

Can anybody confirm that it can also be only the head gasket? See pictures.

Many thanks for watching and your help.


I also post the questions on other forums so maybe you will see it twice)


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Old 10-05-2012, 04:03 PM   #2 (permalink)
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hiwayvagabond wants to know Dino or Syn?
Very well could be the problem, take out the plugs and have a look see, if everything is on the money, timing, mixture, the plugs should read the result, IE. mild chocolate color and no oil fouling(damp to wet), usually when the head gasket starts to go away(loosing) material, could be the head is not down tight. While the head is off, look around the counter bore(where the head sets on the cylinder) if its nicked or dinged, especially where the gasket damage is, good chance combustion gases are doing the damage. I've used copper head gaskets seems like forever on my older equipment, careful, clean, installation and some new head bolts, everything torqued to spec, fire up and warm up, while its good and warm, re-torque everything again in the proper sequence, MAC and Snap-On Tools have the ideal thin short dogbone wrench to use on this application, its almost a "must have" item to deal with this! hope this helps!
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Old 01-25-2013, 12:23 PM   #3 (permalink)
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Cladden wants to know Dino or Syn?
Hello. I'm having a similar problem. I have a 1980 80" FXEF. I'd been going on short rides and the bike was running rough. Took it out on the highway to blow it out. Started running more rough (fouled the front plug). The bike died, when checking it over I noticed the front cylinder was noticeably cooler.

Got it home put new plugs in and it fired right up. Now there is smoke coming from the cc breather and the rear cylinder.

Could I have damaged the rear cylinder riding it on one cylinder.
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Old 01-25-2013, 06:19 PM   #4 (permalink)
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johnjzjz wants to know Dino or Syn?
shovel head gaskets today are suspect ( china ) the cheap gasket sets are around if you dont know the difference, you can put the china ones in and they blow out with in weeks --

1 : james head gaskets with the FIRE ring is one of the better ones if you can get them
2 : if they bought the cheap china gasket set than the valve guide seals are total garbage - they leak oil by like they never installed them and fall off as you drive -- in my shop we only use the blue rubber seals, BUT the valve guides need to be machined to install and are good for 25,000 miles ( the tin good ones ) only last 10,000 if that long
i would remove the top end and have it checked < piston to bore size
and the valve guides you will need a .377 reemer to check it they were sized correctly -- than put on the blue rubber seals - jz
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