Don't know if the following is applicable since they refer to rust inside the tank during a discussion of CVO BOs overheating. These came from http://www.harley-davidsonforums.co...heating-what-i-have-done-fix.html#post3252970 I offer them anyway:
Hey Guys.
I had the same problem with my 2014 CVO BO here in Australia. After months of bickering with HD, they coughed it up.
New oversize pistons, bored out 10 thou, redo the heads, all under warranty. I have eventually found out why your breakout CVO overheated.
Here it is..... Are you sitting down? The guys who polished the tanks with cutting compound on the assembly line did not plug the fuel filler cap, so all the cutting compound got into the fuel tank. So....once the fuel tank was filled with the cutting compound still in the tank, it caused an abrasive action on the fuel pump impellers wearing them out causing low fuel pressure causing a lean mixture, pinging, detonating, stalling and eventually seizing. WOW. One of the head HD technicians informed me that HD knew about this back in April 2014 and a memo was sent out to all the HD dealerships stating that the fuel tank was to be removed and washed out during predelivery. What a chain of events hey? I hope this helps. Now we wait for HD to have a recall.
...I've been the mechanical trade for 35 years including teaching fuel injection systems. The tank polishing on the CVO breakouts is a 15 stage process to polish the metal so it looks like chrome. First time ever in the world on an assembly line. Why whould you think that a head HD technician would make up a story like that and then tell me they are paying for all the repairs (new oversize Pistons, bore the barrels, send heads away for a full service and fit new fuel pump) on my bike at HD's expense. The bike was playing up not long after I picked it up and obviously got worse when the hot weather arrived. It was surging, back firing through the air cleaner (lean mixture) hard to start and pinging.
... Regards
(EDIT) CVO BO owner
Another forum member brought up the following and I hope this portion is a one time error at the factory:
I have a 2014 cvo breakout. Imported it myself with only 300 miles on the clock. Bike has always been lazy to start even after a new battery. the other day when I was riding it I noticed it was getting extremely hot and automatically cut out the rear cylinder At the traffic lights I rode it another 1km and pulled up and turned it off. went to check the oil and burnt my hand even touching the dipstick. Proceeded to start it and it wouldn't even wind over. Let it cool down for a few hours and ask a mate who said it sounds like it was running lean. Give it a full tank of 98 and added fuel cleaner. Seams to run fine now. It hot the better of me as I noticed oil around my head bolts. Gave it an oil change, found metal in the filter. compression test at 145 psi both cylinders which is good.
Still not satisfied so I bores coped inside the cylinders. Found score marks on the bores.
Pulled the tank to check the
fuel filter then bang. There it is. Found a rag in the tank from when they polushed it at the factory.
drained the tank and the whole thing is full of rust. the tank is literally lined with scum which looks like it has oxidized in there. the whole tank looks to me needs replacing. Who knows what other damage it has font internally
So for anyone who posted above about old mates theory about the cutting compound in the tanks.
he is right and I advise all of you guys that own one to pull your tanks and put your foot up the closest harley dealer workshop managers
(EDIT)
Attached Images
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Rag 3_1428571972932.jpg (659.7 KB, 51 views)
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Tank 2_1428571991474.jpg (717.4 KB, 49 views)
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IMG_3909_1428572024398.jpg (618.4 KB, 48 views)