'04 E Glide engine skipping
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Cruiser
Joined: Apr 2010
Posts: 134
Likes: 12
From: S.C.
'04 E Glide engine skipping
'Hey guys. I have an '04 Screaming Eagle E Glide with 70 k miles on it. Just recently, the engine has started skipping. The rear cylinder is not firing all the time at idle. Did a compression test with these results: Both plugs out: the front cylinder hits 150 lbs consistently with WOT and with no throttle. The rear cylinder hits 70 lbs with a few revolutions and then all of a sudden, it hits 150 lbs.. I release the pressure guage and try it again and get the same readings. There seems to be no pattern when it hits 150 lbs., sometimes it will turn over a few more or less times before it hits 150 lbs. AND, to complicate things, when actually riding, anything over idle, it runs smooth as can be. No skip at all and plenty of power. All this with the engine cold or hot. The bike has around 70K miles on it and still runs strong, just don't idle too good. The engine has never been worked on or modified in any way except at 30 k miles, I had the dealer install a new screaming eagle cam chain tensioner with high flow oil pump and I just put in an Axtell oil bypass unit which did raise the oil pressure at all RPMs. The skipping was before the oil bypass unit was added too . I'm thinking that the exhaust valve may be sticking or maybe a bad hydraullc lifter, something along those lines. Anyone have any ideas or thoughts as to what might be causing it?Thanks
Outstanding HDF Member
Joined: Oct 2016
Posts: 2,530
Likes: 546
From: Wayne County, PA
Sounds like it needs a new top end. Unless it's skipping timing like the tensioners quit. When's the last time the tensioners were checked out? Yes I know it was switched for the se one but it still uses plastic shoes.
Road Warrior
Joined: May 2012
Posts: 1,423
Likes: 535
From: Oregon
My guess is you have a sticking valve. Very common in aircooled engines. Usually shows up on cold starts and at idle.
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Cruiser
Joined: Apr 2010
Posts: 134
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From: S.C.
Yep, it skips when its cold or when the engine is hot. If it is a sticking valve, what's the fix? Guess it means tearing down the top end, huh?
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Road Warrior
Joined: May 2012
Posts: 1,423
Likes: 535
From: Oregon
I would pull the heads and disassemble them. You will probably find the stem seals worn out and pulling oil down the guide which can create a buildup at the end of the guide. Usually the exhaust is the worst. You have good compression so you can freshen the heads up and keep going.
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